Top 8 Best Diamond Necklaces | 2021 Reviews + Guide

Best Diamond Necklaces

A fine-looking diamond necklace will put a spark in your heart or a special person you plan to give it to. 

You can learn more about finding out the best matching diamond necklace for you by reading our buyer’s guide found after our ready-made list of diamond necklaces.

Below are the best diamond necklaces we could find for you, giving an elegant finish to anyone who wears them. You can find your pick in our carefully chosen items that would best fit your style. Don’t miss out on the best ones in the market today!

Top 8 Best Diamond Necklaces Reviewed

  1. 14K White Gold Pear Halo Cluster Necklace by James Allen – Best Overall
  2. Premier Three-Stone Diamond Necklace by Blue Nile – Best Value
  3. 14K Yellow Gold Single Pierced Diamond Speck Necklace by Brevani – Editor’s Choice
  4. 14K Yellow Gold Triple Layer Pierced Diamond Specks Necklace by Brevani
  5. Diamond “V” Bar Necklace by Blue Nile
  6. 18K Rose Gold Diamond Clustered Halo with South Sea Cultured Pearl Necklace
  7. 14K Yellow Gold Curving Diamond Bar Necklace by Blue Nile
  8. Diamond Y-Necklace by Blue Nile 

#1. 14K White Gold Pear Halo Cluster Necklace by James Allen – Best Overall

14K White Gold Pear Halo Cluster Necklace by James Allen


  • Size (mm): 10.6 x 7.7
  • Ave. total carats: 0.33
  • Color: G-H
  • Clarity: SI1-SI2
  • Metal: 14K White Gold
  • Length: 14-16in

This diamond-studded pear-shaped necklace with a halo gives a classic diamond necklace design that is preferred by most. It gives a brilliant shine due to its paved small diamond crystals that encrust the necklace’s center.

The classic pear-shaped design of diamonds goes way back. But, its look might have been more popularized today through Paris Hilton’s 2 million dollar engagement ring that has become the statement rock she’s been wearing, and she sees to be wearing for the foreseeable future.

This diamond necklace sits between the line of everyday wear and a formal occasion, making it a versatile necklace you can fully utilize. It is beautifully crafted with 40 round-cut diamonds that are prong set and held on a 14k white gold metal. 

The center diamonds are suspended in an adjustable chain with four stations of brilliant round cut diamond bezel set that will delicately drape on and down your neck for a full-on elegant look. The metal chain is made of 14k white gold, making it match the brilliance of your diamonds. 

This necklace will be a thrilling and thoughtful gift for your special loved ones as it is offered at a great price. Along with this, James Allen also offers quality packaging, 30-day returns, and a lifetime warranty that guarantees your satisfaction with your purchase. 

Versatile, great for an everyday or formal look
Other higher diamond grade choices in the market
Classic popular pear-shaped design
Small diamond crystals
High-quality metal
Hard to use clasp
Great return policy
Adjustable chain

#2. Premier Three-Stone Diamond Necklace by Blue Nile – Best Value

Premier Three-Stone Diamond Necklace in Platinum (1 1/2 ct. tw.)


  • Size (mm): 14.29 x 6.35
  • Ave. total carats: 1.5
  • Color: F
  • Clarity: VS2
  • Metal: 950 platinum
  • Length: 18in

For those who want a luxurious diamond necklace cut in large chunks and not dispersed into smaller crystals, this could be for you! It has three-prong set diamonds that are measured at 1.5 carats. It gives an elegant and classy look as the three whole diamonds are emphasized and centered on the necklace.

The luster and brilliance of these three whole diamonds are blinding enough to catch anyone’s attention. Verified purchasers left reviews, and many have been asking them where they bought their necklaces. 

The diamonds in this necklace are graded with minimal flaws and colorless property, making it quite pricey due to its natural source. The Blue Nile ensures that all their diamonds are untreated and natural, making this diamond necklace extra special.

It would be a pleasant gift for your loved one, which she would surely appreciate once she sees the authenticity and shine of this diamond necklace. The platinum prong and chains that hold the diamonds are 95% pure and hypoallergenic, making it compatible with any skin type. It is heavyweight and ideal for jewelry pieces, complementing the diamonds well for an overall precious necklace.

This diamond necklace has an easy and classic lobster claw clasp mechanism that will make it hassle-free to remove and put on your own. Overall, this diamond necklace pushes elegance to its limit with its high-quality diamonds and metal components yet sits over the edge for becoming too over the top due to its classic design.

This necklace will be a great investment for you if you have an extra budget for some luxury as you can fully utilize its precious diamonds and go with any outfit you choose. 

High-grade and high-quality materials
Incompatible for casual settings
Medium to large natural diamonds
Too much for some
Hypoallergenic metal componentsExpensive
Great for formal occasions
Easy classic metal clasp

#3. 14K Yellow Gold Single Pierced Diamond Speck Necklace by Brevani – Editor’s Choice

14K Yellow Gold Single Pierced Diamond Speck Necklace by Brevani


  • Size (mm): 3
  • Ave. total carats: 0.15
  • Color: H
  • Clarity: I1
  • Metal: 14K Yellow Gold
  • Length: 16-18in

This diamond necklace’s jump ring design allows more light to penetrate and add more shine to your diamond. This necklace houses a humbly sized diamond that would be great for your everyday look. It can be unnoticed by greedy eyes yet appreciated by people close to you.

You will be comfortable wearing this necklace anywhere in any setting as it is simple. However, it still contains a fancy rock, making it a special property. It can even be more sentimental if given as a gift, especially for those who are not fond of extravagant gifts.

A contrasting 14K yellow gold metal strung and single pierces the dangling diamond for your neck. The diamond has a simple round shape graded with average clarity and smoothness but is still valuable because of the naturally occurring nature that makes it a rare precious gemstone.

Its grade and clarity wouldn’t even be noticeable because of its small size. It would still exhibit adamantine luster, which genuine diamonds exhibit, making it pretty and compact. For those, want to own an authentic natural diamond necklace but are short on the budget, this is for you. 

James Allen offers quality packaging, 30-day returns, and a lifetime warranty that guarantees your satisfaction for your purchase. You can now wear one of the most precious gemstones around your neck without hurting your budget too much. This diamond necklace purchase could be the best deal you’ve got. 

More exposure of the diamond for more luster
Too simple, almost unnoticeable
Thoughtful and sentimental gift
Below average grade and clarity
Great for any setting
Diamond is too small
Simple yet elegant
Trusted seller

#4. 14K Yellow Gold Triple Layer Pierced Diamond Specks Necklace by Brevani

14K Yellow Gold Triple Layer Pierced Diamond Specks Necklace by Brevani


  • Size (mm): 3 for each of the nine diamonds
  • Ave. total carats: 0.95
  • Color: H
  • Clarity: I1
  • Metal: 14K Yellow Gold
  • Length: 16-18-20in

This triple-layered necklace houses nine-round speck diamonds that can flash for anyone’s attention. The first layer has a center diamond. The second layer has three equally well-distanced speck diamonds, and the third layer is lined with five speck diamonds. This multi-layered diamond necklace will give a luxurious look.

This elegant necklace is ideal for formal events and special occasions. It gives an extra touch of luxury that displays layer upon layer of lined diamonds that will make you valuable.

You can offer this extravagant gift to your wife or your mom, so she can feel extra special when she puts it on. It will be a thrilling gift when she sees the diamonds in each jump ring that makes them twinkle at every angle. 

If you’re looking for an extra elegant and attention-seeking accessory that can turn heads on special occasions, this will do the trick. It would be a great investment for you as you know that James Allen also offers quality packaging, 30-day returns, and a lifetime warranty that guarantees your satisfaction for your purchase. 

Great return policies from a trusted sellerIncompatible with some who want a simple design
Nine equally spaced twinkling diamonds
Can be over the top for some outfits or occasion
A unique multi-layered style
Small diamonds

#5. Diamond “V” Bar Necklace by Blue Nile

Diamond "V" Bar Necklace in 14k White Gold (1/2 ct. tw.)


  • Size (mm): 19.05 x 38.1
  • Ave. total carats: 1.95
  • Color: I
  • Clarity: SI2
  • Metal: 18K White Gold
  • Length: 18in

This V-shaped necklace is studded with round, brilliantly cut diamonds. They are held in minimal secure prongs to maximize their exposed surface, making room for more shine. These diamonds are graded to have maximum flawlessness with great clarity.

All this necklace’s diamonds hang from a matching 18k white gold cable chain that forms a chevron shape with the diamonds lining towards the center. This design is smiled upon by modern geometric styling, which accents any neckline and complements different styles. You’d be sure to get a good fit with it and would even accentuate your good features for an overall great look.

Aside from its gold metal composition, it is also rhodium plated to give a more wear-resistant property and a shine that will complement your diamonds. Its lobster claw clasp is a classic mechanism for locking necklaces, making it easy for you to remove and put it on without anyone’s help.

This necklace will be perfect for formal events and special occasions to go with your outfit to give an overall classy vibe and highlight your best features. The valuable 1.95-carat diamonds on your neck will make you feel even more special and carry yourself with more confidence.

This diamond necklace will also be a great gift for your loved ones or a special person like your wife. She will appreciate the investment you gave her happiness when she sees the diamonds’ intricate design and maximum shine complemented with high-quality metal materials. 

These features are nicely placed on a fancy box from the Blue Nile, one of the most trusted jewelry brands. This necklace will also be preserved in its special storage box, keeping it from long exposure to outside elements while preventing it from scratching your other pieces of jewelry due to its hard crystal nature. 

Classic design that accentuates necklines
Delicate thin chain
High-quality diamonds and metals
Too extravagant
Easy metal claspExpensive
Maximum shine

#6. 18K Rose Gold Diamond Clustered Halo with South Sea Cultured Pearl Necklace

18K Rose Gold Diamond Clustered Halo with South Sea Cultured Pearl Necklace


  • Size (mm): 11-12
  • Ave. total carats: 0.8
  • Color: F-G
  • Clarity: SI1-SI2
  • Metal: 18K Rose Gold
  • Length: 16-18in

This diamond cluster halo necklace is centered with a South Sea cultured pearl that complements your diamonds’ brilliant luster. They also blend and make a simple yet elegant statement that maximizes your necklace’s size, with the diamond and pearl boosting the brilliance out of each other.

The rose gold metal that holds your pearl and diamonds gives a romantic aura that matches the pearl’s pink tinge. This necklace would be a perfect gift for your girlfriend or your wife, especially when it’s Valentine’s Day or your anniversary. 

The 35 round cut diamonds that encircle your pearl give an above-average grade and exceptional clarity that make the diamonds more valuable. Wearing this diamond pearl necklace will make you feel special and more confident.

You can trust James Allen as one of the most trusted sellers in the market today with their long-running reputation and their great 30-day return policy. Its lifetime warranty can be utilized throughout your necklace’s life, making it a great investment. 

Halo studded diamonds with complementing pearl
Incompatible for those who want a pure diamond necklace only
High-quality, brilliant diamonds
Relatively expensive than average ones
Trusted seller with great deals
Romantic pink aura
Simple yet elegant

#7. 14K Yellow Gold Curving Diamond Bar Necklace by Blue Nile

Delicate Curved Diamond Bar Necklace in 14k Yellow Gold (3/8 ct. tw.)


  • Size (mm): 5
  • Ave. total carats: 0.50
  • Color: G-H
  • Clarity: SI2-I1
  • Metal: 14K white, yellow, or rose gold
  • Length: 18in

A delicately curved bar is studded with 40 small round diamond crystals that will line under your neck to give an elegant finish that will match your stylish outfit. The end of this curved diamond-studded bar is held by a 14k gold metal chain that supports it and lets it hang on your neck. 

Its gold metal chain is offered in three different colors: white, yellow, and rose, to complement your style or theme of choice. Each diamond has a high-grade range and above-average clarity. 

Considering its high-quality features and unique, elegant design, the purchase of this necklace comes at a great deal as it is offered at a relatively cheaper price than its equivalent diamond necklaces with high-grade diamonds. 

Your wife or your girlfriend would greatly appreciate this diamond necklace at first sight. Aside from your thoughtful investment for your special loved one, she will also appreciate how you picked a unique design that will surely suit her in any of her outfits. 

This necklace will emphasize the wearer’s classy aura and give them confidence as they shine in any formal event or a special occasion. You won’t be surprised if this diamond necklace is their favorite jewelry among their other possessions.

With this James Allen product, you can fully be confident of their trustworthy service. They even have a great 30-day return policy. Their lifetime warranty promise for their products can be utilized throughout your necklace’s life, making it a great investment. 

Budget-friendly, 40 high-quality diamonds
Numerous but small-cut diamonds
Trusted seller with great deals and policiesNon-adjustable necklace length
Unique subtle curved bar design
Flimsy clasp
Varied metal chain color choices
Suitable for formal parties

#8. Diamond Y-Necklace by Blue Nile

Diamond Y-Necklace in 18k White Gold (1/2 ct. tw.)


  • Size (mm): 5
  • Ave. total carats: 0.52
  • Color: I
  • Clarity: SI2
  • Metal: 18K white gold
  • Length: 16in

Each diamond in this necklace is cleverly cut into center round diamonds that are rounder into nine, with four more hanging down your neck to form a unique Y-shape. This diamond necklace gives a unique shape design that will set you apart from all the other conventional necklace wearers.

It is cleverly minimal yet elegant, creating a fresh take on a classic silhouette. Metal parts supporting the diamonds are made from 18K white gold that matches the precious diamonds’ brilliance. A cable chain holds everything together to be strung and worn on your neck. 

The lobster claw metal clasp of this necklace makes an easy mechanism for putting it on and off even by yourself. The necklace’s metal parts are also rhodium plated to be wear-resistant, making it less susceptible to tarnishing.

If you’re looking for something different, a design that would set you apart from cliched diamond necklaces, this would be a great investment for you. 

Brilliant metal composition with rhodium plating
Short non-adjustable chain
Easy, manageable metal clasp
Smaller than expected
High-quality, clear diamonds
Unique, elegant Y-shape

Top Pick – Best Diamond Necklace

James Allen’s 14K White Gold Pear Halo Cluster Necklace tops the list among the best diamond necklaces in our list due to its relatively affordable price along with quality diamonds that form into a popular pear-shaped design.

Its diamonds are naturally authentic as they are sourced from a trusted seller, James Allen, which also offers good deals, great return policies, and a lifetime warranty for their products. Their company has served the industry for a long time, making them well-known and one of the most trusted online sellers for precious stones such as diamonds. On top of that, they have a feature online where they show a 3D picture of their items, allowing you to look at their products from 360-degree angles.

Many features can be considered when choosing a diamond necklace that would best fit you. James Allen’s 14K White Gold Pear Halo Cluster Necklace balances all the good features of a diamond necklace and outweighs its cons. With this diamond necklace, you can get the most of what you have paid for!

Buyer’s Guide: Features to Look Out for Before Buying the Best Diamond Necklace

Verified Authenticity

It would be best to get diamonds from verified vendors or sellers specializing in jewelry for those who plan to buy natural, authentic diamond necklaces. Reputable brands and sellers would even include a Certificate of Authenticity with your necklace purchase to guarantee your gemstone’s legitimacy.

Grade and Quality

Diamonds are usually valued and priced based on how little imperfections dominate their surface or how clear and colorless they are. VS1-VS2 diamonds are flawless to the naked eye and are just a fraction less valuable than a truly flawless diamond. SI1-SI2s are diamonds with little inclusions that won’t be noticeable for a casual observer. However, for larger diamonds with more evident inclusions, VS2s at least would be the safest choice.

Colorless diamonds are considered the purest, making them more valuable. A diamond’s clarity is rated from D-Z, with D being the clearest, with it gradually being colored to yellow or light brown. They are color-graded by comparing them to stones with known colors under controlled lighting and precise viewing settings.

Suitable Diamond Size

Diamonds are usually measured in inches or millimeters through their diameter. They range from 3-11mm cuts to be conveniently strung into a necklace. The larger its size is, the more costly it would be, but it will also be more eye-catching, best used for formal events.

Preferred Shape or Design

Various diamond necklaces are now being made with creative designs to match their elegance, such as halo, V, or Y-shaped lined diamond designs are emerging. However, some may still prefer the simplicity of a center strung diamond necklace that makes their brilliance enough for an eye-catching moment. A rounded-cut diamond is the most popular for its cut due to its maximized facets that make them shine the most. 

Necklace Length

You need to match the necklace length with the width of your neck and how you’d like your necklace to appear, hanging from your neck. Usually, diamond necklaces that measure 16in at most would most likely appear as chokers or leave minimal space, while 18in necklace lengths or more would drape down with enough space for your neck.

Durable Material

Ensure that your diamonds are protected with rims or plating, especially if they are situated near other gemstones, as they can scratch your other pieces of jewelry due to their superior hardness. They should be placed in a secure four or six prong metal or a jump ring to secure them on your necklace. 

For the metal clasps or other metal strings or chains attached to your diamond necklace, especially for pendants, ensure that they have a high-quality metal material to match the elegance of your diamonds. Most reputable diamond necklaces would use white, rose, or yellow gold metal clasps or chains with some protective plating to make them resistant to tarnishing.

Secure Metal Clasp

Most necklaces can have flimsy clasps that can be severed easily, or some even complain of very complicated or hard to open clasps that would be an inconvenience if you were to remove it alone. You can discover other diamond necklaces that provide a secure clasp that would have an uncomplicated opening and locking mechanism that wouldn’t compromise the security of your diamonds hanging on your neck. 

Good Reviews and Ratings

If were to be meticulous in choosing your items before buying them, you will read some reviews from verified purchasers who’ve already seen the product personally. With that, you can assess what features are great and what makes a certain diamond necklace worth your money. You would know that it’s a buy if it has been garnering many good reviews with soaring ratings. 

Within Your Budget

When you compare various products in the market, you can assess what features set them apart from the other products. If you saw one diamond necklace that is just as great and high-quality as the other necklace types sold at a higher price, then you must pick it over the others for a good deal. 

You can sacrifice some negotiable features for your diamond necklace if you don’t have enough budget to buy the most extravagant ones in the market today. You can start by choosing the preferred grade and clarity of diamond necklaces that would fit your budget, then ensure that you get the authenticity and wear-resistance and be happy with how it looks overall. 

It would be best to invest in your diamond necklace’s longevity and design so you can be satisfied with your purchase while making it cost-effective in the long run. It would be a plus if the sellers have satisfaction guarantees, money back, and other warranties that would be useful throughout your necklace’s life.


Diamonds are bought for elegant accessories, investments, or plainly for collections that make them sought after in the market. A valuable diamond necklace can be a sentimental gift for a loved one or a personal investment for yourself. Whatever it may be, it seems that diamond necklaces are taking the market by storm and are adored by people worldwide. 

Different diamond necklaces are now being offered in the market today, which can be quite overwhelming. Luckily, a list of the best diamond necklaces has already been made for you. The James Allen’s 14K White Gold Pear Halo Cluster Necklace made it to the top of the list among the best diamond necklaces due to its relatively affordable price yet great features proven by verified purchasers to be adored by them.

Other diamond necklaces proceeding James Allen’s 14K White Gold Pear Halo Cluster Necklace, our best pick, also offers great and unique features that you may find to best fit you or your loved one.

Knowing what features to look for when buying a diamond necklace helps you get satisfaction for your purchase. You should be equipped enough to know what you’re looking for if you’ve already read the buyer’s guide for the best diamond necklaces on our list.

FAQs – Frequently Asked Questions

How can you effectively test synthetic diamonds from genuine ones?

You must remember that lab-created or synthetic diamonds can also be classified as genuine diamonds and are valuable as well as they are made with the same structure as natural diamonds. However, naturally occurring diamonds can be distinguished from synthetic ones through a couple of tests that makes them extremely valuable. 

Thermal conductivity tests work for differentiating diamond simulants such as cubic zirconia from the naturally occurring diamond. However, a new diamond simulant called moissanite can only be differentiated using electrical conductivity tests. A naturally occurring diamond also has the hardest bonding pattern making it the hardest mineral in the Mohs Scale of hardness. Only a natural diamond can scratch another natural diamond.

How are naturally occurring diamonds formed, and where do they come from?

Diamonds are formed from the element carbon upon millions of years of exposure to extreme pressure and temperature, making them the strongest mineral or gemstone in the industry. This process means that they are found deep within the Earth’s subsurface and can be mined out through pipes that extend deep under the ground, such as kimberlites. 

The incredibly long and hard process for their formation and the complicated way of mining them out from the Earth’s surface makes them extremely rare, making them one of the most valuable and beautiful gemstones in the market.

Are diamonds a good investment?

Yes. Precious metals and stones increase in value as time progress. With the depletion of their raw materials on the Earth, they become rarer and harder to find and obtain. With the increasing demands of modern society, it wouldn’t be a surprise if a couple of years from now, your diamond has multiplied in value. 

As a gift, it would also be a good investment given to your loved ones. You would want to build a good relationship with them and appreciate how you send them a message that they are valuable to you.

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