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Cushion|Natural|GIA

1.00ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1553479465

Certificate GIA 1553479465

Diamond specifications and retailer prices

From £879 GBP
As of November 6, 2026
Save £199 GBP (18%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,077 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic 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 1553479465. Listed at 7 retailers as of November 6, 2026, with prices from £879 to £1,077, a £199 spread on the same certified stone. GemTrove lists it at £1,077. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553479465
Dimensions5.65 × 5.52 × 3.74 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal
Top View
5.65 mm5.52 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553479465
Side View
Table 64.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.7%

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 6
Current: £1,077 GBP|Low: £773 GBP|High: £1,165 GBP|Avg: £977 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4£879 GBP
Retailer 7£879 GBP
Retailer 3£917 GBP
Retailer 2£965 GBP
Retailer 6£1,001 GBP
Retailer 5£1,069 GBP
GemTrove£1,077 GBP

40 data points across 7 retailers

7 retailers£879 GBP to £1,077 GBP

A
Cheapest Retailer
-
£879 GBP
Final sale: no returns
A
Retailer 2
-
£879 GBP
View
A
Retailer 3
-
£917 GBP
View
A
Retailer 4
-
£965 GBP
View
A
Retailer 5
-
£1,001 GBP
View
A
Retailer 6
-
£1,069 GBP
View
Most Expensive
A
GemTrove
GT-N-00976640-98 · Nov 6
£1,077 GBP
A$2,218 AUD
View
6 more retailers have this diamond
Prices start from £879 GBPSave up to £199 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
£879 GBP