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Radiant|Natural|GIA

1.21ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 1555663793

Certificate GIA 1555663793

Diamond specifications and retailer prices

From HK$13,323 HKD
$1,698 USD
As of October 28, 2026
Save HK$10,553 HKD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$23,876 HKD at Helzberg Diamonds · As of October 28, 2026
View at Helzberg Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant 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 1555663793. Listed at 10 retailers as of October 28, 2026, with prices from HK$13,323 to HK$23,876, a HK$10,553 spread on the same certified stone. Helzberg Diamonds lists it at HK$23,876. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555663793
Dimensions7.41 × 5.28 × 3.45 mm
L/W Ratio1.40
Culet sizeNone
Top View
7.41 mm5.28 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555663793
Side View
Table 68.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.4%

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: Oct 28
Current: HK$23,876 HKD|Low: HK$13,323 HKD|High: HK$25,876 HKD|Avg: HK$18,447 HKD|-7.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 4HK$13,323 HKD
Retailer 5HK$13,323 HKD
Retailer 9HK$14,504 HKD
Retailer 6HK$14,643 HKD
Retailer 7HK$15,983 HKD
Retailer 3HK$16,712 HKD
Retailer 8HK$17,423 HKD
Retailer 2HK$18,767 HKD
Retailer 10HK$21,931 HKD
Helzberg DiamondsHK$23,876 HKD

37 data points across 10 retailers

10 retailersHK$13,323 HKD to HK$23,876 HKD

A
Cheapest Retailer
-
HK$13,323 HKD
$1,698 USD
A
Retailer 2
-
HK$13,323 HKD
$1,698 USD
View
A
Retailer 3
-
HK$14,504 HKD
SGD 2,498 SGD
View
A
Retailer 4
-
HK$14,643 HKD
£1,469 GBP
View
B+
Retailer 5
-
HK$15,983 HKD
$2,037 USD
View
B+
Retailer 6
-
HK$16,712 HKD
$2,130 USD
View
B+
Retailer 7
-
HK$17,423 HKD
$2,221 USD
View
B+
Retailer 8
-
HK$18,767 HKD
€2,278 EUR
View
B+
Retailer 9
-
HK$21,931 HKD
$2,795 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLMMJNPJ · Oct 28
HK$23,876 HKD
$3,043 USD
View
9 more retailers have this diamond
Prices start from HK$13,323 HKDSave up to HK$10,553 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 Radiant
HK$13,323 HKD