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Round|Natural|GIA

5.21ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 5221562779

Certificate GIA 5221562779

Diamond specifications and retailer prices

From £70,971 GBP
$95,093 USD
As of October 30, 2026
Save £45,535 GBP (39%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £116,506 GBP at MOH London · As of October 29, 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 5221562779. Listed at 7 retailers as of October 29, 2026, with prices from £70,971 to £116,506, a £45,535 spread on the same certified stone. MOH London lists it at £116,506. 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
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5221562779
Dimensions11.05 × 11.12 × 6.87 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
11.05 mm11.12 mm5.21 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5221562779
Side View
Table 56.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £116,506 GBP|Low: £70,971 GBP|High: £146,121 GBP|Avg: £86,070 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 5£70,971 GBP
Retailer 7£71,370 GBP
Retailer 2£74,548 GBP
Retailer 4£77,293 GBP
Retailer 6£83,406 GBP
Retailer 3£90,033 GBP
MOH London£116,506 GBP

21 data points across 7 retailers

7 retailers£70,971 GBP to £116,506 GBP

A
Cheapest Retailer
-
£70,971 GBP
$95,093 USD
A
Retailer 2
-
£71,370 GBP
$95,628 USD
View
A
Retailer 3
-
£74,548 GBP
View
B+
Retailer 4
-
£77,293 GBP
$103,564 USD
View
B+
Retailer 5
-
£83,406 GBP
$111,755 USD
View
B+
Retailer 6
-
£90,033 GBP
€114,890 EUR
View
Most Expensive
B
MOH London
6249AAB8A · Oct 29
£116,506 GBP
View
6 more retailers have this diamond
Prices start from £70,971 GBPSave up to £45,535 GBP

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
£70,971 GBP