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Cushion|Natural|GIA

0.31ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 5563718148

Certificate GIA 5563718148

Diamond specifications and retailer prices

From £343 GBP
$460 USD
As of November 1, 2026
Save £433 GBP (56%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £776 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 5563718148. Listed at 6 retailers as of November 1, 2026, with prices from £343 to £776, a £433 spread on the same certified stone. MOH London lists it at £776. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5563718148
Dimensions3.82 × 3.77 × 2.60 mm
L/W Ratio1.01
Key to symbols
Cloud, Crystal, Feather
Top View
3.82 mm3.77 mm0.31 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5563718148
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.0%

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: £776 GBP|Low: £343 GBP|High: £780 GBP|Avg: £512 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 3£343 GBP
Retailer 2£418 GBP
Retailer 6£444 GBP
Retailer 5£460 GBP
Retailer 4£509 GBP
MOH London£776 GBP

9 data points across 6 retailers

6 retailers£343 GBP to £776 GBP

A
Cheapest Retailer
-
£343 GBP
$460 USD
B+
Retailer 2
-
£418 GBP
View
B+
Retailer 3
-
£444 GBP
$595 USD
View
B+
Retailer 4
-
£460 GBP
View
B+
Retailer 5
-
£509 GBP
€650 EUR
View
Most Expensive
B
MOH London
40E259C99 · Nov 1
£776 GBP
View
5 more retailers have this diamond
Prices start from £343 GBPSave up to £433 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
£343 GBP