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Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 5513610130

Certificate GIA 5513610130

Diamond specifications and retailer prices

From HK$13,323 HKD
$1,698 USD
As of November 3, 2026
Save HK$14,329 HKD (52%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$27,651 HKD at MOH London · As of November 1, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5513610130. Listed at 12 retailers as of November 1, 2026, with prices from HK$13,323 to HK$27,651, a HK$14,329 spread on the same certified stone. MOH London lists it at HK$27,651. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40°
Pavilion angle36.99°
OriginNatural
Grading LabGIA
CertificateGIA 5513610130
Dimensions6.31 × 5.80 × 3.99 mm
L/W Ratio1.09
Top View
6.31 mm5.80 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5513610130
Side View
Table 62.0%Crown 40°Girdle: STK-VTKPavilion 36.99°Culet: NoneDepth 68.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: HK$27,651 HKD|Low: HK$12,420 HKD|High: HK$28,737 HKD|Avg: HK$18,125 HKD|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 5HK$13,323 HKD
Retailer 9HK$13,338 HKD
Retailer 6HK$14,372 HKD
Retailer 2HK$15,374 HKD
Retailer 3HK$16,258 HKD
Retailer 8HK$16,814 HKD
Retailer 7HK$17,810 HKD
Retailer 10HK$17,810 HKD
Retailer 11HK$18,360 HKD
Retailer 4HK$21,510 HKD
MOH LondonHK$27,651 HKD

35 data points across 11 retailers

12 retailersHK$13,323 HKD to HK$27,651 HKD

A
Cheapest Retailer
-
HK$13,323 HKD
$1,698 USD
A
Retailer 2
-
HK$13,338 HKD
$1,700 USD
View
Final sale: no returns
B+
Retailer 3
-
HK$14,372 HKD
$1,832 USD
View
B+
Retailer 4
-
HK$14,386 HKD
A$2,821 AUD
View
B+
Retailer 5
-
HK$15,374 HKD
£1,543 GBP
View
B+
Retailer 6
-
HK$16,258 HKD
A$3,188 AUD
View
B+
Retailer 7
-
HK$16,814 HKD
$2,143 USD
View
B
Retailer 8
-
HK$17,810 HKD
$2,270 USD
View
B
Retailer 9
-
HK$17,810 HKD
$2,270 USD
View
B
Retailer 10
-
HK$18,360 HKD
$2,340 USD
View
B
Retailer 11
-
HK$21,510 HKD
€2,611 EUR
View
Most Expensive
B
MOH London
E8E9572A0 · Nov 1
HK$27,651 HKD
£2,775 GBP
View
11 more retailers have this diamond
Prices start from HK$13,323 HKDSave up to HK$14,329 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.

A
1.21ct Cushion
HK$13,323 HKD