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Cushion|Natural|GIA

0.31ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 2557871850

Certificate GIA 2557871850

Diamond specifications and retailer prices

From HK$2,699 HKD
$344 USD
As of November 1, 2026
Save HK$3,888 HKD (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$6,587 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 0.31ct natural cushion diamond

This 0.31ct natural cushion sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557871850. Listed at 9 retailers as of November 1, 2026, with prices from HK$2,699 to HK$6,587, a HK$3,888 spread on the same certified stone. MOH London lists it at HK$6,587. 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

0.31
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557871850
Dimensions3.89 × 3.71 × 2.55 mm
L/W Ratio1.05
Key to symbols
Crystal
Top View
3.89 mm3.71 mm0.31 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557871850
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 68.7%

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$6,587 HKD|Low: HK$2,699 HKD|High: HK$6,616 HKD|Avg: HK$4,839 HKD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8HK$2,699 HKD
Retailer 7HK$3,076 HKD
Retailer 3HK$3,706 HKD
Retailer 6HK$3,910 HKD
Retailer 5HK$4,424 HKD
Retailer 9HK$4,538 HKD
Retailer 4HK$5,248 HKD
Retailer 2HK$5,774 HKD
MOH LondonHK$6,587 HKD

37 data points across 9 retailers

9 retailersHK$2,699 HKD to HK$6,587 HKD

A
Cheapest Retailer
-
HK$2,699 HKD
$344 USD
B+
Retailer 2
-
HK$3,076 HKD
$392 USD
View
B
Retailer 3
-
HK$3,706 HKD
£372 GBP
View
B+
Retailer 4
-
HK$3,910 HKD
£392 GBP
View
B
Retailer 5
-
HK$4,424 HKD
ZAR 9,108 ZAR
View
Retailer 6
-
HK$4,538 HKD
A$890 AUD
View
Price last confirmed 29 days ago
B
Retailer 7
-
HK$5,248 HKD
€637 EUR
View
B
Retailer 8
-
HK$5,774 HKD
£579 GBP
View
Most Expensive
B
MOH London
073C9E438 · Nov 2
HK$6,587 HKD
£661 GBP
View
8 more retailers have this diamond
Prices start from HK$2,699 HKDSave up to HK$3,888 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
0.31ct Cushion
HK$2,699 HKD