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Loose Diamonds
Find the perfect center stone. Compare diamonds by shape, cut, color, clarity, carat weight, and price, backed by verified buyer reviews.
How to Choose a Loose Diamond: Buyer’s Guide
Discover the right center stone. Get to know the 4Cs—cut, color, clarity, and carat weight—compare actual prices, and shop wiser. Our guides show you how to balance sparkle and budget, with real buyers’ insights and certified diamond options you can rely on.
What Is a Loose Diamond?
A loose diamond is a center stone sold separately from a setting. Choosing a loose stone lets you select the exact quality, shape, and budget you want, and pair it with a setting that suits your style and hand.
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Cut: Cut drives sparkle. Select Excellent or Rare Carat Ideal to use optimum fire.
Color: D–F is colorless. G -J is great value and near-colorless.
Clarity: VS2 tends to be eye-clean. SI1–SI2 can be smart deals.
Carat: Carat no longer carat size. cut and shape influence face-up look.
Balance Sightsee Diamond Search to equalize beauty and price.
Lab-Grown vs Natural Diamonds
Diamonds grown in the laboratory are real diamonds. They are as hard and sparkle as natural stones. Lab stones are usually cheaper in the same size. Diamonds which are natural, bear a rarity and custom. Both are clearly certified at Rare Carat.
Best Seller Insights from Your Catalog
Stones that are marked Best Sellers in your dataset are numerous. All shapes are equally represented in ten most popular cuts. There are Top shapes Round, Oval, Princess, Cushion, Emerald, Pear, Marquise, Radiant, Asscher and Heart.
Cut grades: best sellers are dominated by Rare Carat Ideal.
Colors: G and H are used the most, and then F, E, and D.
Clarity: VS1, VS2 and then VVS2 and then VVS1 and IF.
Carat: 0.90-3.66 carats.
Average carat: 1.67 carats amongst best sellers.
Search these winning profiles with filters.
Best Seller
0.90 Carat Pear Cut Lab Diamond
Color: D
Clarity: VS2
Carat: 0.9-0.99
Cut: Very Good
This 0.90 carat Pear lab created diamond is certified by IGI as D color VS2 clarity and Very Good cut. It can be purchased as a loose diamond or set in a ring.
Best Seller
1.71 Carat Oval Cut Lab Diamond
Color: H
Clarity: VVS2
Carat: 1.7-1.79
Cut: Rare Carat Ideal
This 1.71 carat Oval lab created diamond is certified by IGI as H color VVS2 clarity and Rare Carat Ideal cut. It can be purchased as a loose diamond or set in a ring.
Best Seller
1.35 Carat Emerald Cut Lab Diamond
Color: D
Clarity: VS2
Carat: 1.3-1.39
Cut: Rare Carat Ideal
This 1.35 carat Emerald lab created diamond is certified by IGI as D color VS2 clarity and Rare Carat Ideal cut. It can be purchased as a loose diamond or set in a ring.
Best Seller
1.09 Carat Pear Cut Lab Diamond
Color: G
Clarity: VVS2
Carat: 1.0-1.09
Cut: Rare Carat Ideal
This 1.09 carat Pear lab created diamond is certified by IGI as G color VVS2 clarity and Rare Carat Ideal cut. It can be purchased as a loose diamond or set in a ring.
Best Seller
1.33 Carat Asscher Cut Lab Diamond
Color: G
Clarity: VS2
Carat: 1.3-1.39
Cut: Rare Carat Ideal
This 1.33 carat Asscher lab created diamond is certified by IGI as G color VS2 clarity and Rare Carat Ideal cut. It can be purchased as a loose diamond or set in a ring.
Best Seller
3.26 Carat Round Cut Lab Diamond
Color: F
Clarity: VS2
Carat: 3.2-3.29
Cut: Rare Carat Ideal
This 3.26 carat Round lab created diamond is certified by IGI as F color VS2 clarity and Rare Carat Ideal cut. It can be purchased as a loose diamond or set in a ring.
How to Choose Your Loose Diamond
Start with shape. Pick what you love first.
Prioritize cut. Brilliance and fire are driven by cut quality.
Set a color target. G-H is bright value in the majority of the metals.
Select to choose the appearance. Aim for eye-clean.
Choose by size and price of carat.
Confirm the certification. Look for GIA or IGI reports.
Need help? Free consultation with GIA-trained gemologists of Chat with Rare Carat.
Popular Shapes and Why They Shine
Round Diamonds: greatest shine and classic style.
Oval Diamonds: Thin shape that is slimming.
Princess Diamonds: Contemporary square splendour and clean edges.
Cushion Diamonds: Smooth edges and old-fashioned.
Emerald Diamonds: Step-cuts with displays of clarity.
Search more shapes in the Gem Search.
Reading a Diamond Report
Check lab, measurements, and proportions. Check the table, depth, polish, and symmetry. Check fluorescence reading and remarks. Find the matching report number to the listing. Rare Carat provides these on each stone.
Certification You Can Trust
Look for reports from GIA or IGI. A grading report verifies cut, color, clarity, and carat. It also lists measurements and proportions. Match the report number to the listing for security.
Select an environment that is conducive to you. Solitaires concentrate on the stone of the center. Halos increase the presence and glitter. Pave bands are used to create shimmer to the shank. Three-stone rings are significant and harmonized. Style your ring in Ring Settings. Finished Engagement Rings can also be browsed as well.
Metal and Color Pairings
D-whitish gold, platinum is a good color. Near-colorless stones are warmed by yellow gold. Rose gold suits a wide range of skins and old-fashioned appearance. Choose the prong styles that cover corners of fancy forms.
Price Transparency and Tools
Rare Carat is a relative price on the same or similar stones. You determine whether there is a fair pricing of a listing. AI assists in rating value depending on the 4Cs. You may sort by strength of deals, cut and video quality.
The majority of the rings come with one free resizing in a year.
These policies minimize the risk of online purchase of jewelry.
Beyond the Center Stone
Make the appearance complete with jewelry. Think of Diamond Earrings to wear everyday. Gift Diamond Pendants. Apply over evening with Layer fancy Diamond Necklaces. Shop customized Diamond Gifts to every milestone.
"I was reluctant to purchase online, it seemed to lack the personal interaction. While shopping I also went to a few jewelry stores and the Rare Carat experience was much better. I was able to shop at my own pace, used the tools to gauge Color Cut Clarity (I had no clue); and finally settled on a stone and setting. I also got found the personal interaction with the Chat feature, not a bot, not a random and changing service person, there was an actual person and the chat details were also sent to my email for reference. I got exactly what I wanted, and after purchase there were clear communications until the ring arrived. I chose the option to pick up from a FedEx location; delivery required a signature and I may not have been home. That was very easy too. Try Rare Carat, I am very happy I did. She said Yes."
"I started shopping for an engagement ring in summer of 2024, when I found the Rare Carat site confusing and dificult to search and build a ring. I received a text outreach from Ajay (may have been a bot) and provided feedback. When I shopped the site again it was greatly improved and was really nice to use. Couple that with excellent assurances, transparent and clear status updates, and the final delivery in a beautiful box I am a very happy customer and would strongly recommend Rare Carat to anyone shopping for high quality gemstones and jewelry. Other than the diamond sparkling far more than the photos could show, I got exactly what I hoped for. She said yes, and gets lots of compliments on her ring."
"I can't thank the Rare Carat Team enough for their efforts to meet my travel timeline. You helped make an incredible trip unforgettable and this couple extremely happy. Hats off to the effort, the quality, and the workmanship. Thanks again!!"
"I received my beautiful lab Diamond bracelet from Rare Carat yesterday. Gorgeous stones and such elegant packaging. And all delivered in time for Christmas! I am very happy with my purchase!!"
“"The ring is beautiful and the price was very fair"”
★★★★★ 5 out of 5
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May 17, 2025
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— Ted F
"Everyone loves the ring. It is beautiful and well made. The diamond is perfect. Delivery was quick and the updates kept me in the loop. The free diamond earrings made a perfect Mother’s Day gift"
"When I proposed to my Finance she was so surprised. We we both so overjoyed. I caught her off guard and it was an amazing moment. We are looking forward to our wedding in may 2026."
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