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Cushion|Natural|GIA

1.00ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 6431253100

Certificate GIA 6431253100

Diamond specifications and retailer prices

From £1,469 GBP
As of November 6, 2026
Save £1,667 GBP (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,482 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6431253100. Listed at 15 retailers as of November 4, 2026, with a 113% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6431253100
Dimensions5.99 × 5.21 × 3.62 mm
L/W Ratio1.15
Top View
5.99 mm5.21 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6431253100
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.6%

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: Nov 6
Current: £3,482 GBP|Low: £1,375 GBP|High: £3,496 GBP|Avg: £2,055 GBP|+2.4%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9£1,469 GBP
Retailer 8£1,500 GBP
Retailer 10£1,582 GBP
Retailer 7£1,591 GBP
Retailer 6£1,626 GBP
Retailer 2£1,765 GBP
Retailer 4£1,898 GBP
Retailer 3£2,229 GBP
Retailer 5£3,136 GBP
Queensmith£3,482 GBP

39 data points across 10 retailers

15 retailers£1,469 GBP to £3,136 GBP

B+
Cheapest Retailer
-
£1,469 GBP
B+
Retailer 2
-
£1,500 GBP
View
Final sale: no returns
B+
Retailer 3
-
£1,582 GBP
View
B+
Retailer 4
-
£1,591 GBP
View
Retailer 5
-
£1,626 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£1,667 GBP
View
B+
Retailer 7
-
£1,712 GBP
View
B+
Retailer 8
-
£1,765 GBP
View
B+
Retailer 9
-
£1,808 GBP
View
B+
Retailer 10
-
£1,808 GBP
View
B
Retailer 11
-
£1,868 GBP
View
B+
Retailer 12
-
£1,898 GBP
View
B
Retailer 13
-
£2,229 GBP
View
B
Retailer 14
-
£3,136 GBP
View
Most Expensive
Queensmith
6431253100 · Oct 28
£3,482 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £1,469 GBPSave up to £1,667 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+
1.00ct Cushion
£1,469 GBP