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Cushion|Natural|GIA

0.31ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 2557871850

Certificate GIA 2557871850

Diamond specifications and retailer prices

From $490 AUD
$344 USD
As of November 1, 2026
Save $705 AUD (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,195 AUD 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 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 $490 to $1,195, a $705 spread on the same certified stone. MOH London lists it at $1,195. 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: $1,195 AUD|Low: $490 AUD|High: $1,200 AUD|Avg: $879 AUD|-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$490 AUD
Retailer 7$558 AUD
Retailer 2$672 AUD
Retailer 6$710 AUD
Retailer 5$803 AUD
Retailer 9$823 AUD
Retailer 4$952 AUD
Retailer 3$1,048 AUD
MOH London$1,195 AUD

37 data points across 9 retailers

9 retailers$490 AUD to $1,195 AUD

A
Cheapest Retailer
-
$490 AUD
$344 USD
B+
Retailer 2
-
$558 AUD
$392 USD
View
B
Retailer 3
-
$672 AUD
£372 GBP
View
B+
Retailer 4
-
$710 AUD
£392 GBP
View
B
Retailer 5
-
$803 AUD
ZAR 9,108 ZAR
View
Retailer 6
-
$823 AUD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$952 AUD
€637 EUR
View
B
Retailer 8
-
$1,048 AUD
£580 GBP
View
Most Expensive
B
MOH London
073C9E438 · Nov 1
$1,195 AUD
£661 GBP
View
8 more retailers have this diamond
Prices start from $490 AUDSave up to $705 AUD

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
$490 AUD