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Cushion|Natural|GIA

1.21ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 1457570031

Certificate GIA 1457570031

Diamond specifications and retailer prices

From £1,228 GBP
As of November 4, 2026
Save £466 GBP (28%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,693 GBP at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded G 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 1457570031. Listed at 5 retailers as of November 4, 2026, with prices from £1,228 to £1,693, a £466 spread on the same certified stone. 77 Diamonds lists it at £1,693. 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

1.21
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1457570031
Dimensions6.20 × 5.53 × 3.94 mm
L/W Ratio1.12
Top View
6.20 mm5.53 mm1.21 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1457570031
Side View
Table 64.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.3%

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 4
Current: £1,693 GBP|Low: £335 GBP|High: £1,710 GBP|Avg: £1,305 GBP|+2.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6£335 GBP
Retailer 2£1,228 GBP
Retailer 5£1,425 GBP
Retailer 3£1,555 GBP
Retailer 4£1,658 GBP
77 Diamonds£1,693 GBP

38 data points across 6 retailers

5 retailers£1,228 GBP to £1,693 GBP

A
Cheapest Retailer
-
£1,228 GBP
Final sale: no returns
A
Retailer 2
-
£1,405 GBP
View
Retailer 3
-
£1,555 GBP
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£1,658 GBP
View
Most Expensive
B+
77 Diamonds
CUSPUIFSNSVA5EUV · Nov 5
£1,693 GBP
View
4 more retailers have this diamond
Prices start from £1,228 GBPSave up to £466 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
1.21ct Cushion
£1,228 GBP