CaratHunter
Plans
Cushion|Natural|GIA

0.31ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2557421521

Certificate GIA 2557421521

Diamond specifications and retailer prices

From $228 CAD
₹15,536 INR
As of October 30, 2026
Save $535 CAD (70%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $763 CAD 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 $228 to $763, a $535 spread on the same certified stone. MOH London lists it at $763. 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 30
Current: $763 CAD|Low: $227 CAD|High: $791 CAD|Avg: $501 CAD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 4$228 CAD
Retailer 6$353 CAD
Retailer 8$380 CAD
Retailer 3$505 CAD
Retailer 5$510 CAD
Retailer 7$555 CAD
Retailer 9$559 CAD
Retailer 2$654 CAD
MOH London$763 CAD

35 data points across 9 retailers

9 retailers$228 CAD to $763 CAD

A
Cheapest Retailer
-
$228 CAD
₹15,536 INR
A
Retailer 2
-
$353 CAD
$253 USD
View
A
Retailer 3
-
$380 CAD
$272 USD
View
B+
Retailer 4
-
$505 CAD
£285 GBP
View
B+
Retailer 5
-
$510 CAD
ZAR 5,893 ZAR
View
B
Retailer 6
-
$555 CAD
$397 USD
View
Retailer 7
-
$559 CAD
A$615 AUD
View
Price last confirmed 27 days ago
B
Retailer 8
-
$654 CAD
€446 EUR
View
Most Expensive
B
MOH London
886378A03 · Oct 29
$763 CAD
£430 GBP
View
8 more retailers have this diamond
Prices start from $228 CADSave up to $535 CAD

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
$228 CAD