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Cushion|Natural|GIA

0.31ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 2556254498

Certificate GIA 2556254498

Diamond specifications and retailer prices

From £307 GBP
$411 USD
As of November 1, 2026
Save £307 GBP (50%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £613 GBP at MOH London · As of November 1, 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 2556254498. Listed at 8 retailers as of November 1, 2026, with prices from £307 to £613, a £307 spread on the same certified stone. MOH London lists it at £613. 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
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556254498
Dimensions3.84 × 3.78 × 2.58 mm
L/W Ratio1.02
Top View
3.84 mm3.78 mm0.31 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2556254498
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 68.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £613 GBP|Low: £307 GBP|High: £617 GBP|Avg: £424 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6£307 GBP
Retailer 2£345 GBP
Retailer 8£363 GBP
Retailer 5£364 GBP
Retailer 4£412 GBP
Retailer 7£422 GBP
Retailer 3£490 GBP
MOH London£613 GBP

44 data points across 8 retailers

8 retailers£307 GBP to £613 GBP

B+
Cheapest Retailer
-
£307 GBP
$411 USD
B
Retailer 2
-
£345 GBP
View
Retailer 3
-
£363 GBP
$486 USD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£364 GBP
View
B
Retailer 5
-
£412 GBP
ZAR 8,914 ZAR
View
Retailer 6
-
£422 GBP
A$871 AUD
View
Price last confirmed 28 days ago
B
Retailer 7
-
£490 GBP
€625 EUR
View
Most Expensive
B
MOH London
E4051D7B2 · Nov 1
£613 GBP
View
7 more retailers have this diamond
Prices start from £307 GBPSave up to £307 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.

B+
0.31ct Cushion
£307 GBP