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Understanding Carat Weight

See The Size On Your Hand

Approximate gemstone size on a U.S. size 6 finger

0.07 ct 33.10 ct

Carat (ct.) is the standard unit used to weigh natural gemstones, including the certified sapphires, rubies, emeralds, and other loose gemstones in our collection, and one gram equals 5 carats. Every gemstone listed on Jamsora shows its exact carat weight alongside its independent lab certificate, so you always know precisely what you're buying.

Matched pairs: when a listing is sold as two stones together, the carat weight shown is their combined total, not the weight of each individual stone.

Carat weight alone doesn't fully describe how large a gemstone will look once set, since two stones of equal weight can appear different sizes depending on their cut and proportions. For a more reliable sense of a stone's visual size, check its millimeter dimensions (length × width × depth), listed on every product page alongside its carat weight and certificate details.

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Newest Best Selling Alphabetical Price: Low to High Price: High to Low Carat: Low to High Carat: High to Low

Sale

7.53 Carat Natural Untreated Sapphire – Oval

7.53 ct · Oval

$167.38 $200.85 17% OFF

JRO-P310533916

Sale

5.89 Carat Natural Untreated Sapphire – Oval

5.89 ct · Oval

$163.65 $196.38 17% OFF

JRO-P526430404-1

Sale

6.95 Carat Natural Untreated Sapphire – Oval

6.95 ct · Oval

$289.68 $347.61 17% OFF

JRO-P651327602

Sale

5.55 Carat Natural Untreated Sapphire – Oval

5.55 ct · Oval

$231.33 $277.59 17% OFF

JRO-P606620633

Sale

5.92 Carat Natural Untreated Sapphire – Oval

5.92 ct · Oval

$328.98 $394.77 17% OFF

JRO-P565537538

Sale

8.06 Carat Natural Untreated Sapphire – Oval

8.06 ct · Oval

$447.93 $537.51 17% OFF

JRO-P661668056

Sale

6.1 Carat Natural Untreated Sapphire – Oval

6.1 ct · Oval

$254.25 $305.10 17% OFF

JRO-P442558795-1

Sale

9.49 Carat Natural Untreated Sapphire – Oval

9.49 ct · Oval

$210.95 $253.14 17% OFF

JRO-P91217642

Sale

5.93 Carat Natural Untreated Sapphire – Cushion

5.93 ct · Cushion

$1,318.20 $1,581.84 17% OFF

JRO-SA203261363-1

Sale

6.38 Carat Natural Untreated Sapphire – Oval

6.38 ct · Oval

$1,063.68 $1,276.41 17% OFF

JRO-SA203261359-1

Sale

8.46 Carat Natural Untreated Sapphire – Oval

8.46 ct · Oval

$141.03 $169.23 17% OFF

JRO-P753189829

Sale

9.69 Carat Natural Untreated Sapphire – Oval

9.69 ct · Oval

$188.48 $226.17 17% OFF

JRO-P438689619

Sale

8.7 Carat Natural Untreated Sapphire – Oval

8.7 ct · Oval

$169.20 $203.04 17% OFF

JRO-P666282458

Sale

9.78 Carat Natural Untreated Sapphire – Oval

9.78 ct · Oval

$163.05 $195.66 17% OFF

JRO-P400672401

Sale

8.65 Carat Natural Untreated Sapphire – Oval

8.65 ct · Oval

$168.25 $201.90 17% OFF

JRO-P447184555

Sale

7.21 Carat Natural Untreated Sapphire – Oval

7.21 ct · Oval

$140.23 $168.27 17% OFF

JRO-P852159467

Sale

9.34 Carat Natural Untreated Sapphire – Oval

9.34 ct · Oval

$181.65 $217.98 17% OFF

JRO-P819277381

Sale

7.87 Carat Natural Untreated Sapphire – Oval

7.87 ct · Oval

$218.68 $262.41 17% OFF

JRO-P402668267

Sale

8.92 Carat Natural Untreated Sapphire – Oval

8.92 ct · Oval

$148.70 $178.44 17% OFF

JRO-P322231167

Sale

8.91 Carat Natural Untreated Sapphire – Oval

8.91 ct · Oval

$148.53 $178.23 17% OFF

JRO-P961697521

Sale

5.68 Carat Natural Untreated Sapphire – Oval

5.68 ct · Oval

$157.83 $189.39 17% OFF

JRO-P566412614

Sale

5.79 Carat Natural Untreated Sapphire – Oval

5.79 ct · Oval

$4,826.60 $5,791.92 17% OFF

JRO-SA204164068

Sale

7.07 Carat Natural Untreated Sapphire – Cushion

7.07 ct · Cushion

$10,804.98 $12,965.97 17% OFF

JRO-SA204164065

Sale

5.55 Carat Natural Untreated Sapphire – Cushion

5.55 ct · Cushion

$3,855.45 $4,626.54 17% OFF

JRO-SA204164064

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