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6.31ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 2556584453

Certificate GIA 2556584453

Diamond specifications and retailer prices

From HK$294,226 HKD
As of November 6, 2026
Save HK$127,375 HKD (30%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$421,601 HKD at Yorxs · As of November 4, 2026
View at Yorxs

About this 6.31ct natural round diamond

This 6.31ct natural round sits in the over five carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556584453. Listed at 3 retailers as of November 4, 2026, with prices from HK$294,226 to HK$421,601, a HK$127,375 spread on the same certified stone. Yorxs lists it at HK$421,601. 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

6.31
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556584453
Dimensions11.71 × 11.81 × 7.35 mm
L/W Ratio1.01
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
11.71 mm11.81 mm6.31 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556584453
Side View
Table 59.0%CrownGirdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.5%

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 6
Current: HK$294,226 HKD|Low: HK$294,226 HKD|High: HK$439,773 HKD|Avg: HK$377,363 HKD|-5.1%
Retailer 1
Retailer 2
Yorxs
November 4, 2026
Retailer 1HK$294,226 HKD
Retailer 2HK$395,798 HKD
YorxsHK$421,601 HKD

28 data points across 3 retailers

3 retailersHK$294,226 HKD to HK$421,601 HKD

A
Cheapest Retailer
-
HK$294,226 HKD
B+
Retailer 2
-
HK$395,798 HKD
View
Most Expensive
B+
Yorxs
1391676 · Nov 4
HK$421,601 HKD
€51,181 EUR
View
2 more retailers have this diamond
Prices start from HK$294,226 HKDSave up to HK$127,375 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
6.31ct Round
HK$294,226 HKD