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Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 2436738919

Certificate GIA 2436738919

Diamond specifications and retailer prices

From HK$13,087 HKD
$1,668 USD
As of November 2, 2026
Save HK$15,283 HKD (54%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$28,370 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2436738919. Listed at 7 retailers as of November 2, 2026, with prices from HK$13,087 to HK$28,370, a HK$15,283 spread on the same certified stone. Frank Darling lists it at HK$28,370. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.2°
Pavilion angle64.9°
OriginNatural
Grading LabGIA
CertificateGIA 2436738919
Dimensions5.90 × 5.63 × 3.99 mm
L/W Ratio1.05
Top View
5.90 mm5.63 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2436738919
Side View
Table 69.0%Crown 39.2°Girdle: THK-VTKPavilion 64.9°Culet: NoneDepth 70.9%

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: Nov 2
Current: HK$28,370 HKD|Low: HK$13,087 HKD|High: HK$28,370 HKD|Avg: HK$17,290 HKD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6HK$13,087 HKD
Retailer 4HK$13,173 HKD
Retailer 5HK$13,275 HKD
Retailer 3HK$13,653 HKD
Retailer 2HK$19,970 HKD
Frank DarlingHK$28,370 HKD

34 data points across 6 retailers

7 retailersHK$13,087 HKD to HK$28,370 HKD

B+
Cheapest Retailer
-
HK$13,087 HKD
$1,668 USD
B+
Retailer 2
-
HK$13,173 HKD
$1,679 USD
View
B+
Retailer 3
-
HK$13,275 HKD
$1,692 USD
View
B+
Retailer 4
-
HK$13,653 HKD
$1,740 USD
View
B+
Retailer 5
-
HK$13,714 HKD
A$2,689 AUD
View
B
Retailer 6
-
HK$19,970 HKD
£2,004 GBP
View
Most Expensive
C
Frank Darling
CU2552MR · Nov 2
HK$28,370 HKD
$3,616 USD
View
6 more retailers have this diamond
Prices start from HK$13,087 HKDSave up to HK$15,283 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$13,087 HKD