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Cushion|Natural|GIA

0.31ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6555180814

Certificate GIA 6555180814

Diamond specifications and retailer prices

From $427 AUD
₹28,489 INR
As of November 1, 2026
Save $943 AUD (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,370 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555180814. Listed at 11 retailers as of November 1, 2026, with prices from $427 to $1,370, a $943 spread on the same certified stone. MOH London lists it at $1,370. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555180814
Dimensions3.84 × 3.82 × 2.55 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
3.84 mm3.82 mm0.31 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6555180814
Side View
Table 63.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 66.8%

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: $1,370 AUD|Low: $426 AUD|High: $1,386 AUD|Avg: $874 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 3$427 AUD
Retailer 6$639 AUD
Retailer 2$734 AUD
Retailer 7$813 AUD
Retailer 5$920 AUD
Retailer 8$950 AUD
Retailer 4$954 AUD
MOH London$1,370 AUD

37 data points across 8 retailers

11 retailers$427 AUD to $1,370 AUD

A
Cheapest Retailer
-
$427 AUD
₹28,489 INR
A
Retailer 2
-
$639 AUD
$448 USD
View
B+
Retailer 3
-
$685 AUD
$480 USD
View
B+
Retailer 4
-
$734 AUD
£405 GBP
View
B+
Retailer 5
-
$786 AUD
$551 USD
View
B+
Retailer 6
-
$813 AUD
£449 GBP
View
B+
Retailer 7
-
$848 AUD
$594 USD
View
B+
Retailer 8
-
$920 AUD
ZAR 10,412 ZAR
View
Retailer 9
-
$950 AUD
View
Price last confirmed 29 days ago
B+
Retailer 10
-
$954 AUD
€637 EUR
View
Most Expensive
B
MOH London
993528188 · Nov 1
$1,370 AUD
£756 GBP
View
10 more retailers have this diamond
Prices start from $427 AUDSave up to $943 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
$427 AUD