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Cushion|Natural|GIA

0.31ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2557421521

Certificate GIA 2557421521

Diamond specifications and retailer prices

From €145 EUR
₹15,474 INR
As of November 2, 2026
Save €341 EUR (70%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €487 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 J 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 2557421521. Listed at 9 retailers as of November 1, 2026, with prices from €145 to €487, a €341 spread on the same certified stone. MOH London lists it at €487. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2557421521
Dimensions3.75 × 3.74 × 2.51 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Needle, Twinning Wisp, Crystal
Top View
3.75 mm3.74 mm0.31 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2557421521
Side View
Table 65.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 67.0%

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 2
Current: €487 EUR|Low: €145 EUR|High: €507 EUR|Avg: €316 EUR|-4.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 2€145 EUR
Retailer 6€226 EUR
Retailer 8€243 EUR
Retailer 3€326 EUR
Retailer 5€327 EUR
Retailer 7€355 EUR
Retailer 9€358 EUR
Retailer 4€419 EUR
MOH London€487 EUR

36 data points across 9 retailers

9 retailers€145 EUR to €487 EUR

A
Cheapest Retailer
-
€145 EUR
₹15,474 INR
A
Retailer 2
-
€226 EUR
$253 USD
View
A
Retailer 3
-
€243 EUR
$272 USD
View
B+
Retailer 4
-
€326 EUR
£287 GBP
View
B+
Retailer 5
-
€327 EUR
ZAR 5,893 ZAR
View
B
Retailer 6
-
€355 EUR
$397 USD
View
Retailer 7
-
€358 EUR
A$615 AUD
View
Price last confirmed 29 days ago
B
Retailer 8
-
€419 EUR
View
Most Expensive
B
MOH London
886378A03 · Nov 1
€487 EUR
£428 GBP
View
8 more retailers have this diamond
Prices start from €145 EURSave up to €341 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
€145 EUR