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Cushion|Natural|GIA

0.31ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1558872758

Certificate GIA 1558872758

Diamond specifications and retailer prices

From £268 GBP
$359 USD
As of October 29, 2026
Save £307 GBP (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £574 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 I 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 1558872758. Listed at 8 retailers as of October 29, 2026, with prices from £268 to £574, a £307 spread on the same certified stone. MOH London lists it at £574. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558872758
Dimensions3.82 × 3.81 × 2.59 mm
L/W Ratio1.00
Key to symbols
Crystal, Feather
Top View
3.82 mm3.81 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558872758
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NDepth 68.1%

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: Oct 29
Current: £574 GBP|Low: £266 GBP|High: £577 GBP|Avg: £413 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 6£268 GBP
Retailer 5£287 GBP
Retailer 2£321 GBP
Retailer 4£386 GBP
Retailer 8£396 GBP
Retailer 7£462 GBP
Retailer 3£503 GBP
MOH London£574 GBP

37 data points across 8 retailers

8 retailers£268 GBP to £574 GBP

B+
Cheapest Retailer
-
£268 GBP
$359 USD
B+
Retailer 2
-
£287 GBP
$385 USD
View
B+
Retailer 3
-
£321 GBP
View
B
Retailer 4
-
£386 GBP
ZAR 8,358 ZAR
View
Retailer 5
-
£396 GBP
A$817 AUD
View
Price last confirmed 30 days ago
B
Retailer 6
-
£462 GBP
€591 EUR
View
B
Retailer 7
-
£503 GBP
View
Most Expensive
B
MOH London
169F95A97 · Nov 2
£574 GBP
View
7 more retailers have this diamond
Prices start from £268 GBPSave up to £307 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
£268 GBP