CaratHunter
Plans
Cushion|Natural|GIA

0.31ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 2557871850

Certificate GIA 2557871850

Diamond specifications and retailer prices

From $611 NZD
$344 USD
As of November 1, 2026
Save $881 NZD (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,492 NZD at MOH London · As of November 2, 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 $611 to $1,492, a $881 spread on the same certified stone. MOH London lists it at $1,492. 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
Colour
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: $1,492 NZD|Low: $611 NZD|High: $1,499 NZD|Avg: $1,096 NZD|-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$611 NZD
Retailer 7$697 NZD
Retailer 3$840 NZD
Retailer 6$886 NZD
Retailer 5$1,002 NZD
Retailer 9$1,028 NZD
Retailer 4$1,189 NZD
Retailer 2$1,308 NZD
MOH London$1,492 NZD

37 data points across 9 retailers

9 retailers$611 NZD to $1,492 NZD

A
Cheapest Retailer
-
$611 NZD
$344 USD
B+
Retailer 2
-
$697 NZD
$392 USD
View
B
Retailer 3
-
$840 NZD
£372 GBP
View
B+
Retailer 4
-
$886 NZD
£392 GBP
View
B
Retailer 5
-
$1,002 NZD
ZAR 9,108 ZAR
View
Retailer 6
-
$1,028 NZD
A$890 AUD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$1,189 NZD
€637 EUR
View
B
Retailer 8
-
$1,308 NZD
£579 GBP
View
Most Expensive
B
MOH London
073C9E438 · Nov 2
$1,492 NZD
£661 GBP
View
8 more retailers have this diamond
Prices start from $611 NZDSave up to $881 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
$611 NZD