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Cushion|Natural|GIA

0.91ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 2146895579

Certificate GIA 2146895579

Diamond specifications and retailer prices

From £475 GBP
$637 USD
As of November 2, 2026
Save £687 GBP (59%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,161 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.91ct natural cushion diamond

This 0.91ct natural cushion sits in the just-under-one-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 2146895579. Listed at 10 retailers as of November 2, 2026, with prices from £475 to £1,161, a £687 spread on the same certified stone. MOH London lists it at £1,161. 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

0.91
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2146895579
Dimensions5.60 × 5.33 × 3.71 mm
L/W Ratio1.05
Top View
5.60 mm5.33 mm0.91 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2146895579
Side View
Table 58.0%CrownGirdlePavilionCulet: NDepth 69.6%

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 2
Current: £1,161 GBP|Low: £475 GBP|High: £1,463 GBP|Avg: £825 GBP|-8.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 9£475 GBP
Retailer 10£572 GBP
Retailer 8£639 GBP
Retailer 5£648 GBP
Retailer 7£668 GBP
Retailer 6£754 GBP
Retailer 2£825 GBP
Retailer 11£948 GBP
Retailer 4£967 GBP
Retailer 3£1,005 GBP
MOH London£1,161 GBP

33 data points across 11 retailers

10 retailers£475 GBP to £1,161 GBP

A
Cheapest Retailer
-
£475 GBP
$637 USD
Final sale: no returns
Retailer 2
-
£572 GBP
$767 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£639 GBP
$857 USD
View
A
Retailer 4
-
£648 GBP
$870 USD
View
A
Retailer 5
-
£668 GBP
$897 USD
View
A
Retailer 6
-
£754 GBP
ZAR 16,342 ZAR
View
B+
Retailer 7
-
£825 GBP
View
B+
Retailer 8
-
£967 GBP
View
Retailer 9
-
£1,005 GBP
A$2,075 AUD
View
Price last confirmed 31 days ago
Most Expensive
B+
MOH London
CAFB2B678 · Nov 2
£1,161 GBP
View
9 more retailers have this diamond
Prices start from £475 GBPSave up to £687 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
0.91ct Cushion
£475 GBP