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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 $481 CAD
$344 USD
As of October 30, 2026
Save $685 CAD (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,166 CAD at MOH London · As of October 26, 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 October 26, 2026, with prices from $481 to $1,166, a $685 spread on the same certified stone. MOH London lists it at $1,166. 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
Color
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: Oct 30
Current: $1,166 CAD|Low: $481 CAD|High: $1,178 CAD|Avg: $818 CAD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 8$481 CAD
Retailer 7$548 CAD
Retailer 3$654 CAD
Retailer 6$696 CAD
Retailer 4$788 CAD
Retailer 9$808 CAD
Retailer 2$934 CAD
Retailer 5$1,031 CAD
MOH London$1,166 CAD

36 data points across 9 retailers

9 retailers$481 CAD to $1,166 CAD

A
Cheapest Retailer
-
$481 CAD
$344 USD
B+
Retailer 2
-
$548 CAD
$392 USD
View
B
Retailer 3
-
$654 CAD
£369 GBP
View
B+
Retailer 4
-
$696 CAD
£392 GBP
View
B
Retailer 5
-
$788 CAD
ZAR 9,108 ZAR
View
Retailer 6
-
$808 CAD
A$890 AUD
View
Price last confirmed 27 days ago
B
Retailer 7
-
$934 CAD
€637 EUR
View
B
Retailer 8
-
$1,031 CAD
£581 GBP
View
Most Expensive
B
MOH London
073C9E438 · Oct 26
$1,166 CAD
£657 GBP
View
8 more retailers have this diamond
Prices start from $481 CADSave up to $685 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
$481 CAD