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Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 5241113102

Certificate GIA 5241113102

Diamond specifications and retailer prices

From HK$21,882 HKD
As of November 6, 2026
Save HK$25,111 HKD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$46,993 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241113102. Listed at 21 retailers as of November 5, 2026, with prices from HK$21,882 to HK$46,993, a HK$25,111 spread on the same certified stone. NZ Jewellers lists it at HK$46,993. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241113102
Dimensions7.40 × 5.19 × 3.64 mm
L/W Ratio1.43
Culet sizeNone
Top View
7.40 mm5.19 mm1.21 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5241113102
Side View
Table 69.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 70.0%

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 6
Current: HK$46,993 HKD|Low: HK$21,882 HKD|High: HK$46,993 HKD|Avg: HK$28,651 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 7, 2026
Retailer 12HK$21,882 HKD
Retailer 10HK$22,399 HKD
Retailer 11HK$22,948 HKD
Retailer 7HK$23,747 HKD
Retailer 5HK$24,437 HKD
Retailer 9HK$24,437 HKD
Retailer 8HK$24,602 HKD
Retailer 6HK$25,378 HKD
Retailer 4HK$25,581 HKD
Retailer 15HK$26,161 HKD
Retailer 3HK$26,741 HKD
Retailer 16HK$26,890 HKD
Retailer 2HK$27,909 HKD
Retailer 20HK$28,191 HKD
Retailer 21HK$28,426 HKD
Retailer 17HK$31,389 HKD
Retailer 18HK$32,917 HKD
Retailer 13HK$34,108 HKD
Retailer 14HK$39,320 HKD
Retailer 19HK$44,987 HKD
NZ JewellersHK$46,993 HKD

16 data points across 21 retailers

21 retailersHK$21,882 HKD to HK$46,993 HKD

B+
Cheapest Retailer
-
HK$21,882 HKD
B+
Retailer 2
-
HK$22,399 HKD
View
B
Retailer 3
-
HK$22,948 HKD
View
B
Retailer 4
-
HK$23,747 HKD
View
B
Retailer 5
-
HK$24,437 HKD
View
Retailer 6
-
HK$24,437 HKD
View
Price last confirmed 9 days ago
B
Retailer 7
-
HK$24,602 HKD
View
B
Retailer 8
-
HK$25,378 HKD
View
B
Retailer 9
-
HK$25,581 HKD
View
B
Retailer 10
-
HK$26,161 HKD
View
B
Retailer 11
-
HK$26,741 HKD
View
B
Retailer 12
-
HK$26,890 HKD
View
B
Retailer 13
-
HK$27,909 HKD
View
B
Retailer 14
-
HK$28,191 HKD
View
B
Retailer 15
-
HK$28,426 HKD
View
B
Retailer 16
-
HK$31,389 HKD
View
B
Retailer 17
-
HK$32,917 HKD
View
B
Retailer 18
-
HK$34,108 HKD
View
B
Retailer 19
-
HK$39,320 HKD
View
B
Retailer 20
-
HK$44,987 HKD
View
Most Expensive
B
NZ Jewellers
b2e4fea6-1d79-4214-8cff-e134bc66ec8b · Nov 5
HK$46,993 HKD
$5,996 USD
View
20 more retailers have this diamond
Prices start from HK$21,882 HKDSave up to HK$25,111 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 Radiant
HK$21,882 HKD