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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 HK$746,071 HKD
$95,093 USD
As of October 30, 2026
Save HK$472,152 HKD (39%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$1,218,223 HKD at MOH London · As of November 1, 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 30, 2026, with prices from HK$746,071 to HK$1,218,223, a HK$472,152 spread on the same certified stone. MOH London lists it at HK$1,218,223. 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: HK$1,218,223 HKD|Low: HK$746,071 HKD|High: HK$1,536,079 HKD|Avg: HK$903,219 HKD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 5HK$746,071 HKD
Retailer 7HK$750,272 HKD
Retailer 3HK$783,672 HKD
Retailer 4HK$812,532 HKD
Retailer 6HK$876,792 HKD
Retailer 2HK$942,252 HKD
MOH LondonHK$1,218,223 HKD

22 data points across 7 retailers

7 retailersHK$746,071 HKD to HK$1,218,223 HKD

A
Cheapest Retailer
-
HK$746,071 HKD
$95,093 USD
A
Retailer 2
-
HK$750,272 HKD
$95,628 USD
View
A
Retailer 3
-
HK$783,672 HKD
£78,650 GBP
View
B+
Retailer 4
-
HK$812,532 HKD
$103,564 USD
View
B+
Retailer 5
-
HK$876,792 HKD
$111,755 USD
View
B+
Retailer 6
-
HK$942,252 HKD
€114,379 EUR
View
Most Expensive
B
MOH London
6249AAB8A · Nov 1
HK$1,218,223 HKD
£122,262 GBP
View
6 more retailers have this diamond
Prices start from HK$746,071 HKDSave up to HK$472,152 HKD

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
HK$746,071 HKD