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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 $163 USD
₹15,483 INR
As of October 31, 2026
Save $384 USD (70%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $546 USD at MOH London · As of October 29, 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 October 29, 2026, with prices from $163 to $546, a $384 spread on the same certified stone. MOH London lists it at $546. 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
Color
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: Oct 31
Current: $546 USD|Low: $162 USD|High: $566 USD|Avg: $359 USD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 2$163 USD
Retailer 6$253 USD
Retailer 8$272 USD
Retailer 4$361 USD
Retailer 5$365 USD
Retailer 7$397 USD
Retailer 9$400 USD
Retailer 3$468 USD
MOH London$546 USD

35 data points across 9 retailers

9 retailers$163 USD to $546 USD

A
Cheapest Retailer
-
$163 USD
₹15,483 INR
A
Retailer 2
-
$253 USD
View
A
Retailer 3
-
$272 USD
View
B+
Retailer 4
-
$361 USD
£285 GBP
View
B+
Retailer 5
-
$365 USD
ZAR 5,893 ZAR
View
B
Retailer 6
-
$397 USD
View
Retailer 7
-
$400 USD
A$615 AUD
View
Price last confirmed 28 days ago
B
Retailer 8
-
$468 USD
€446 EUR
View
Most Expensive
B
MOH London
886378A03 · Oct 29
$546 USD
£430 GBP
View
8 more retailers have this diamond
Prices start from $163 USDSave up to $384 USD

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
$163 USD