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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 £223 GBP
₹28,489 INR
As of November 1, 2026
Save £493 GBP (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £717 GBP 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 £223 to £717, a £493 spread on the same certified stone. MOH London lists it at £717. 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: £717 GBP|Low: £223 GBP|High: £725 GBP|Avg: £456 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2£223 GBP
Retailer 6£334 GBP
Retailer 3£384 GBP
Retailer 7£425 GBP
Retailer 5£481 GBP
Retailer 8£497 GBP
Retailer 4£499 GBP
MOH London£717 GBP

36 data points across 8 retailers

11 retailers£223 GBP to £717 GBP

A
Cheapest Retailer
-
£223 GBP
₹28,489 INR
A
Retailer 2
-
£334 GBP
$448 USD
View
B+
Retailer 3
-
£358 GBP
$480 USD
View
B+
Retailer 4
-
£384 GBP
View
B+
Retailer 5
-
£411 GBP
$551 USD
View
B+
Retailer 6
-
£425 GBP
View
B+
Retailer 7
-
£443 GBP
$594 USD
View
B+
Retailer 8
-
£481 GBP
ZAR 10,412 ZAR
View
Retailer 9
-
£497 GBP
A$1,024 AUD
View
Price last confirmed 29 days ago
B+
Retailer 10
-
£499 GBP
€637 EUR
View
Most Expensive
B
MOH London
993528188 · Nov 1
£717 GBP
View
10 more retailers have this diamond
Prices start from £223 GBPSave up to £493 GBP

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
£223 GBP