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Cushion|Natural|GIA

1.00ct F SI2 Cushion Natural Diamond

EX • F/SI2 • GIA 2557145738

Certificate GIA 2557145738

Diamond specifications and retailer prices

From £869 GBP
As of November 6, 2026
Save £247 GBP (22%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,116 GBP at GemTrove · As of November 7, 2026
View at GemTrove

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557145738. Listed at 6 retailers as of November 6, 2026, with prices from £869 to £1,116, a £247 spread on the same certified stone. GemTrove lists it at £1,116. 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

1.00
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557145738
Dimensions5.58 × 5.45 × 3.69 mm
L/W Ratio1.02
Top View
5.58 mm5.45 mm1.00 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557145738
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.8%

Caratlytics Score

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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 6
Current: £1,116 GBP|Low: £776 GBP|High: £1,116 GBP|Avg: £962 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3£869 GBP
Retailer 6£870 GBP
Retailer 4£907 GBP
Retailer 2£959 GBP
Retailer 5£994 GBP
GemTrove£1,116 GBP

40 data points across 6 retailers

6 retailers£869 GBP to £1,116 GBP

A
Cheapest Retailer
-
£869 GBP
Final sale: no returns
A
Retailer 2
-
£870 GBP
View
A
Retailer 3
-
£907 GBP
View
A
Retailer 4
-
£959 GBP
View
A
Retailer 5
-
£994 GBP
View
Most Expensive
A
GemTrove
GT-N-00976594-98 · Nov 7
£1,116 GBP
A$2,298 AUD
View
5 more retailers have this diamond
Prices start from £869 GBPSave up to £247 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
1.00ct Cushion
£869 GBP