Round|Natural|GIA

5.21ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 5231475571

Certificate GIA 5231475571

Diamond specifications and retailer prices

From $82,773 USD
As of November 1, 2026
Save $62,483 USD (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $145,256 USD at MOH London · As of November 2, 2026
View at MOH London

About this 5.21ct natural round diamond

This 5.21ct natural round sits in the over five carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231475571. Listed at 11 retailers as of November 1, 2026, with prices from $82,773 to $145,256, a $62,483 spread on the same certified stone. MOH London lists it at $145,256. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

5.21
Carat
G
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5231475571
Dimensions11.27 × 11.32 × 6.77 mm
L/W Ratio1.00
Top View
11.27 mm11.32 mm5.21 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231475571
Side View
Table 59.0%CrownGirdle: MED-STKPavilion 41.4°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $145,256 USD|Low: $86,424 USD|High: $147,006 USD|Avg: $108,431 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3$95,066 USD
Retailer 5$98,517 USD
Retailer 6$98,960 USD
Retailer 4$103,150 USD
Retailer 2$113,888 USD
MOH London$145,256 USD

20 data points across 6 retailers

11 retailers$82,773 USD to $145,256 USD

A
Cheapest Retailer
-
$82,773 USD
A
Retailer 2
-
$87,681 USD
View
A
Retailer 3
-
$95,066 USD
View
Final sale: no returns
Retailer 4
-
$96,883 USD
View
Price last confirmed 16 days ago
Retailer 5
-
$96,883 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$99,830 USD
View
B+
Retailer 7
-
$99,830 USD
View
Retailer 8
-
$100,758 USD
View
Price last confirmed 16 days ago
B+
Retailer 9
-
$103,150 USD
View
B+
Retailer 10
-
$113,888 USD
€108,465 EUR
View
Most Expensive
B
MOH London
73FFD187C · Nov 2
$145,256 USD
£114,375 GBP
View
10 more retailers have this diamond
Prices start from $82,773 USDSave up to $62,483 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
5.21ct Round
$82,773 USD