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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 €308 EUR
$344 USD
As of November 1, 2026
Save €443 EUR (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €751 EUR 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 2557871850. Listed at 9 retailers as of November 1, 2026, with prices from €308 to €751, a €443 spread on the same certified stone. MOH London lists it at €751. 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
Color
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: €751 EUR|Low: €308 EUR|High: €755 EUR|Avg: €552 EUR|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8€308 EUR
Retailer 7€351 EUR
Retailer 2€423 EUR
Retailer 6€446 EUR
Retailer 5€505 EUR
Retailer 9€518 EUR
Retailer 4€599 EUR
Retailer 3€659 EUR
MOH London€751 EUR

37 data points across 9 retailers

9 retailers€308 EUR to €751 EUR

A
Cheapest Retailer
-
€308 EUR
$344 USD
B+
Retailer 2
-
€351 EUR
$392 USD
View
B
Retailer 3
-
€423 EUR
£372 GBP
View
B+
Retailer 4
-
€446 EUR
£392 GBP
View
B
Retailer 5
-
€505 EUR
ZAR 9,108 ZAR
View
Retailer 6
-
€518 EUR
A$890 AUD
View
Price last confirmed 29 days ago
B
Retailer 7
-
€599 EUR
View
B
Retailer 8
-
€659 EUR
£580 GBP
View
Most Expensive
B
MOH London
073C9E438 · Nov 1
€751 EUR
£661 GBP
View
8 more retailers have this diamond
Prices start from €308 EURSave up to €443 EUR

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
€308 EUR