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Cushion|Natural|GIA

0.31ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1415650669

Certificate GIA 1415650669

Diamond specifications and retailer prices

From £373 GBP
$500 USD
As of October 31, 2026
Save £446 GBP (54%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £819 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 1415650669. Listed at 7 retailers as of October 31, 2026, with prices from £373 to £819, a £446 spread on the same certified stone. MOH London lists it at £819. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1415650669
Dimensions3.90 × 3.74 × 2.52 mm
L/W Ratio1.04
Culet sizeNone
Top View
3.90 mm3.74 mm0.31 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1415650669
Side View
Table 64.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 67.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £819 GBP|Low: £364 GBP|High: £828 GBP|Avg: £513 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 5£373 GBP
Retailer 2£389 GBP
Retailer 7£390 GBP
Retailer 8£402 GBP
Retailer 3£545 GBP
Retailer 4£562 GBP
Retailer 6£581 GBP
MOH London£819 GBP

44 data points across 8 retailers

7 retailers£373 GBP to £819 GBP

A
Cheapest Retailer
-
£373 GBP
$500 USD
B+
Retailer 2
-
£389 GBP
View
B+
Retailer 3
-
£390 GBP
$523 USD
View
B+
Retailer 4
-
£545 GBP
€696 EUR
View
B+
Retailer 5
-
£562 GBP
ZAR 12,174 ZAR
View
Retailer 6
-
£581 GBP
A$1,198 AUD
View
Price last confirmed 28 days ago
Most Expensive
B
MOH London
51E4744FC · Nov 1
£819 GBP
View
6 more retailers have this diamond
Prices start from £373 GBPSave up to £446 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
£373 GBP