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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 HK$19,438 HKD
$2,477 USD
As of October 31, 2026
Save HK$11,464 HKD (37%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$30,901 HKD 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 HK$19,438 to HK$30,901, a HK$11,464 spread on the same certified stone. Frank Darling lists it at HK$30,901. 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: HK$30,901 HKD|Low: HK$19,606 HKD|High: HK$30,901 HKD|Avg: HK$26,737 HKD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3HK$19,873 HKD
Retailer 5HK$21,884 HKD
Retailer 6HK$28,668 HKD
Retailer 4HK$29,390 HKD
Retailer 2HK$29,859 HKD
Frank DarlingHK$30,901 HKD

35 data points across 6 retailers

7 retailersHK$19,438 HKD to HK$30,901 HKD

B+
Cheapest Retailer
-
HK$19,438 HKD
$2,477 USD
B+
Retailer 2
-
HK$19,873 HKD
$2,533 USD
View
B+
Retailer 3
-
HK$20,297 HKD
$2,587 USD
View
B
Retailer 4
-
HK$20,775 HKD
$2,648 USD
View
Retailer 5
-
HK$21,884 HKD
$2,789 USD
View
Price last confirmed 57 days ago
B
Retailer 6
-
HK$29,859 HKD
£2,997 GBP
View
Most Expensive
B
Frank Darling
CU2551MR · Nov 2
HK$30,901 HKD
$3,939 USD
View
6 more retailers have this diamond
Prices start from HK$19,438 HKDSave up to HK$11,464 HKD

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
HK$19,438 HKD