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 $289 NZD
₹15,474 INR
As of November 2, 2026
Save $677 NZD (70%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $966 NZD 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 $289 to $966, a $677 spread on the same certified stone. MOH London lists it at $966. 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: $966 NZD|Low: $288 NZD|High: $1,007 NZD|Avg: $628 NZD|-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$289 NZD
Retailer 6$450 NZD
Retailer 8$483 NZD
Retailer 3$648 NZD
Retailer 5$648 NZD
Retailer 7$706 NZD
Retailer 9$711 NZD
Retailer 4$832 NZD
MOH London$966 NZD

36 data points across 9 retailers

9 retailers$289 NZD to $966 NZD

A
Cheapest Retailer
-
$289 NZD
₹15,474 INR
A
Retailer 2
-
$450 NZD
$253 USD
View
A
Retailer 3
-
$483 NZD
$272 USD
View
B+
Retailer 4
-
$648 NZD
£287 GBP
View
B+
Retailer 5
-
$648 NZD
ZAR 5,893 ZAR
View
B
Retailer 6
-
$706 NZD
$397 USD
View
Retailer 7
-
$711 NZD
A$615 AUD
View
Price last confirmed 29 days ago
B
Retailer 8
-
$832 NZD
€446 EUR
View
Most Expensive
B
MOH London
886378A03 · Nov 1
$966 NZD
£428 GBP
View
8 more retailers have this diamond
Prices start from $289 NZDSave up to $677 NZD

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
$289 NZD