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Cushion|Natural|GIA

0.31ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1539081595

Certificate GIA 1539081595

Diamond specifications and retailer prices

From £276 GBP
$370 USD
As of November 1, 2026
Save £337 GBP (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £612 GBP at MOH London · As of November 2, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1539081595. Listed at 11 retailers as of November 1, 2026, with prices from £276 to £612, a £337 spread on the same certified stone. MOH London lists it at £612. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1539081595
Dimensions3.74 × 3.66 × 2.56 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Key to symbols
Crystal, Cloud
Top View
3.74 mm3.66 mm0.31 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1539081595
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 70.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £612 GBP|Low: £272 GBP|High: £616 GBP|Avg: £392 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5£276 GBP
Retailer 3£285 GBP
Retailer 9£285 GBP
Retailer 10£306 GBP
Retailer 4£344 GBP
Retailer 8£363 GBP
Retailer 7£411 GBP
Retailer 11£422 GBP
Retailer 6£489 GBP
Retailer 2£537 GBP
MOH London£612 GBP

44 data points across 11 retailers

11 retailers£276 GBP to £612 GBP

B+
Cheapest Retailer
-
£276 GBP
$370 USD
B+
Retailer 2
-
£285 GBP
$383 USD
View
B+
Retailer 3
-
£306 GBP
$411 USD
View
B
Retailer 4
-
£344 GBP
View
Retailer 5
-
£362 GBP
$486 USD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
£363 GBP
View
B
Retailer 7
-
£411 GBP
ZAR 8,914 ZAR
View
Retailer 8
-
£422 GBP
A$871 AUD
View
Price last confirmed 28 days ago
B
Retailer 9
-
£489 GBP
€625 EUR
View
B
Retailer 10
-
£537 GBP
View
Most Expensive
B
MOH London
B019B4339 · Nov 2
£612 GBP
View
10 more retailers have this diamond
Prices start from £276 GBPSave up to £337 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.

B+
0.31ct Cushion
£276 GBP