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Cushion|Natural|GIA

1.21ct J SI2 Cushion Natural Diamond

EX • J/SI2 • GIA 5413846810

Certificate GIA 5413846810

Diamond specifications and retailer prices

From $3,535 AUD
$2,477 USD
As of October 31, 2026
Save $2,085 AUD (37%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,620 AUD at Frank Darling · As of November 2, 2026
View at Frank Darling

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 5413846810. Listed at 7 retailers as of October 31, 2026, with prices from $3,535 to $5,620, a $2,085 spread on the same certified stone. Frank Darling lists it at $5,620. 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
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5413846810
Dimensions6.37 × 5.83 × 4.04 mm
L/W Ratio1.09
Top View
6.37 mm5.83 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5413846810
Side View
Table 63.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.2%

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: Oct 31
Current: $5,620 AUD|Low: $3,566 AUD|High: $5,620 AUD|Avg: $4,863 AUD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3$3,614 AUD
Retailer 5$3,980 AUD
Retailer 6$5,214 AUD
Retailer 4$5,345 AUD
Retailer 2$5,430 AUD
Frank Darling$5,620 AUD

35 data points across 6 retailers

7 retailers$3,535 AUD to $5,620 AUD

B+
Cheapest Retailer
-
$3,535 AUD
$2,477 USD
B+
Retailer 2
-
$3,614 AUD
$2,533 USD
View
B+
Retailer 3
-
$3,691 AUD
$2,587 USD
View
B
Retailer 4
-
$3,778 AUD
$2,648 USD
View
Retailer 5
-
$3,980 AUD
$2,789 USD
View
Price last confirmed 57 days ago
B
Retailer 6
-
$5,430 AUD
£2,997 GBP
View
Most Expensive
B
Frank Darling
CU2551MR · Nov 2
$5,620 AUD
$3,939 USD
View
6 more retailers have this diamond
Prices start from $3,535 AUDSave up to $2,085 AUD

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+
1.21ct Cushion
$3,535 AUD