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5.21ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 5231475571

Certificate GIA 5231475571

Diamond specifications and retailer prices

From HK$649,412 HKD
$82,773 USD
As of November 1, 2026
Save HK$490,225 HKD (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$1,139,637 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 5231475571. Listed at 11 retailers as of November 1, 2026, with prices from HK$649,412 to HK$1,139,637, a HK$490,225 spread on the same certified stone. MOH London lists it at HK$1,139,637. 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
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$1,139,637 HKD|Low: HK$678,057 HKD|High: HK$1,153,367 HKD|Avg: HK$850,721 HKD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3HK$745,859 HKD
Retailer 5HK$772,937 HKD
Retailer 6HK$776,410 HKD
Retailer 4HK$809,284 HKD
Retailer 2HK$893,533 HKD
MOH LondonHK$1,139,637 HKD

20 data points across 6 retailers

11 retailersHK$649,412 HKD to HK$1,139,637 HKD

A
Cheapest Retailer
-
HK$649,412 HKD
$82,773 USD
A
Retailer 2
-
HK$687,915 HKD
$87,681 USD
View
A
Retailer 3
-
HK$745,859 HKD
$95,066 USD
View
Final sale: no returns
Retailer 4
-
HK$760,115 HKD
$96,883 USD
View
Price last confirmed 15 days ago
Retailer 5
-
HK$760,115 HKD
$96,883 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
HK$783,236 HKD
$99,830 USD
View
B+
Retailer 7
-
HK$783,236 HKD
$99,830 USD
View
Retailer 8
-
HK$790,517 HKD
$100,758 USD
View
Price last confirmed 15 days ago
B+
Retailer 9
-
HK$809,284 HKD
$103,150 USD
View
B+
Retailer 10
-
HK$893,533 HKD
€108,465 EUR
View
Most Expensive
B
MOH London
73FFD187C · Nov 1
HK$1,139,637 HKD
£114,375 GBP
View
10 more retailers have this diamond
Prices start from HK$649,412 HKDSave up to HK$490,225 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$649,412 HKD