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Cushion|Natural|GIA

0.91ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2428984346

Certificate GIA 2428984346

Diamond specifications and retailer prices

From £616 GBP
$826 USD
As of November 2, 2026
Save £607 GBP (50%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,223 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 F 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 2428984346. Listed at 10 retailers as of November 2, 2026, with prices from £616 to £1,223, a £607 spread on the same certified stone. MOH London lists it at £1,223. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2428984346
Dimensions5.17 × 4.97 × 3.80 mm
L/W Ratio1.04
Top View
5.17 mm4.97 mm0.91 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2428984346
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 76.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,223 GBP|Low: £616 GBP|High: £1,294 GBP|Avg: £865 GBP|-4.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6£616 GBP
Retailer 7£656 GBP
Retailer 5£668 GBP
Retailer 8£675 GBP
Retailer 3£678 GBP
Retailer 9£780 GBP
Retailer 2£780 GBP
Retailer 4£977 GBP
Retailer 10£1,050 GBP
MOH London£1,223 GBP

44 data points across 10 retailers

10 retailers£616 GBP to £1,223 GBP

A
Cheapest Retailer
-
£616 GBP
$826 USD
Final sale: no returns
A
Retailer 2
-
£656 GBP
$880 USD
View
A
Retailer 3
-
£668 GBP
$896 USD
View
A
Retailer 4
-
£675 GBP
$906 USD
View
A
Retailer 5
-
£678 GBP
$910 USD
View
A
Retailer 6
-
£780 GBP
View
A
Retailer 7
-
£780 GBP
View
A
Retailer 8
-
£977 GBP
ZAR 21,190 ZAR
View
Retailer 9
-
£1,050 GBP
A$2,167 AUD
View
Price last confirmed 28 days ago
Most Expensive
B+
MOH London
A7708F15D · Nov 2
£1,223 GBP
View
9 more retailers have this diamond
Prices start from £616 GBPSave up to £607 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
£616 GBP