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Cushion|Natural|GIA

1.21ct J SI2 Cushion Natural Diamond

EX • J/SI2 • GIA 2151146163

Certificate GIA 2151146163

Diamond specifications and retailer prices

From $4,462 USD
£3,513 GBP
As of November 1, 2026
1 retailer carries this diamond
Only listing: $4,462 USD at 77 Diamonds
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at 77 Diamonds

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded J 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 2151146163. Listed at a single retailer as of November 1, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
J
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2151146163
Dimensions6.13 × 5.77 × 4.00 mm
L/W Ratio1.06
Top View
6.13 mm5.77 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2151146163
Side View
Table 65.0%CrownGirdle: Very ThickPavilionCuletDepth 69.3%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 1
Current: $4,462 USD|Low: $4,382 USD|High: $4,491 USD|Avg: $4,453 USD|+1.8%
November 1, 2026
77 Diamonds$4,462 USD

38 data points across 1 retailer

1 retailer

C
77 Diamonds
CUSZCDQF5GYV · Nov 1
$4,462 USD
£3,513 GBP
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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.

C
1.21ct Cushion
$4,462 USD