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Cushion|Natural|GIA

0.31ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1553420879

Certificate GIA 1553420879

Diamond specifications and retailer prices

From £263 GBP
₹33,624 INR
As of October 31, 2026
Save £574 GBP (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £838 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 1553420879. Listed at 11 retailers as of October 31, 2026, with prices from £263 to £838, a £574 spread on the same certified stone. MOH London lists it at £838. 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
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553420879
Dimensions3.83 × 3.83 × 2.61 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
3.83 mm3.83 mm0.31 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 1553420879
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.1%

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 31
Current: £838 GBP|Low: £263 GBP|High: £847 GBP|Avg: £528 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 3£263 GBP
Retailer 8£369 GBP
Retailer 6£390 GBP
Retailer 2£449 GBP
Retailer 7£497 GBP
Retailer 4£545 GBP
Retailer 5£562 GBP
Retailer 9£581 GBP
Retailer 10£743 GBP
MOH London£838 GBP

35 data points across 10 retailers

11 retailers£263 GBP to £838 GBP

A
Cheapest Retailer
-
£263 GBP
₹33,624 INR
Retailer 2
-
£369 GBP
$495 USD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
£419 GBP
$561 USD
View
B+
Retailer 4
-
£449 GBP
View
B+
Retailer 5
-
£456 GBP
$611 USD
View
B+
Retailer 6
-
£497 GBP
View
B
Retailer 7
-
£545 GBP
€696 EUR
View
B
Retailer 8
-
£562 GBP
ZAR 12,174 ZAR
View
Retailer 9
-
£581 GBP
A$1,198 AUD
View
Price last confirmed 28 days ago
Retailer 10
-
£743 GBP
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
EFE886342 · Nov 1
£838 GBP
View
10 more retailers have this diamond
Prices start from £263 GBPSave up to £574 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
£263 GBP