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Cushion|Natural|GIA

1.21ct H SI2 Cushion Natural Diamond

ID • H/SI2 • GIA 6512083209

Certificate GIA 6512083209

Diamond specifications and retailer prices

From £994 GBP
As of November 6, 2026
Save £471 GBP (32%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,466 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.21ct natural cushion diamond

This 1.21ct 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 6512083209. Listed at 6 retailers as of November 5, 2026, with prices from £994 to £1,466, a £471 spread on the same certified stone. Blue Nile lists it at £1,466. 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
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6512083209
Dimensions6.51 × 6.13 × 4.01 mm
L/W Ratio1.06
Top View
6.51 mm6.13 mm1.21 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512083209
Side View
Table 62.0%CrownGirdle: ThickPavilionCulet: NoneDepth 65.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,466 GBP|Low: £985 GBP|High: £1,466 GBP|Avg: £1,253 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 3£994 GBP
Retailer 5£1,219 GBP
Retailer 4£1,243 GBP
Retailer 2£1,275 GBP
Retailer 6£1,376 GBP
Blue Nile£1,466 GBP

10 data points across 6 retailers

6 retailers£994 GBP to £1,466 GBP

A
Cheapest Retailer
-
£994 GBP
A
Retailer 2
-
£1,219 GBP
View
A
Retailer 3
-
£1,243 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,275 GBP
View
A
Retailer 5
-
£1,376 GBP
View
Most Expensive
A
Blue Nile
23635727 · Nov 5
£1,466 GBP
$1,962 USD
View
5 more retailers have this diamond
Prices start from £994 GBPSave up to £471 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
£994 GBP