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Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1242026926

Certificate GIA 1242026926

Diamond specifications and retailer prices

From HK$14,342 HKD
As of November 6, 2026
Save HK$19,703 HKD (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$40,512 HKD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct 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 1242026926. Listed at 19 retailers as of November 4, 2026, with a 137% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242026926
Dimensions7.08 × 5.23 × 3.53 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.08 mm5.23 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242026926
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.5%

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 6
Current: HK$18,402 HKD|Low: HK$14,045 HKD|High: HK$34,633 HKD|Avg: HK$20,539 HKD|+0.7%
Retailer 1
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
November 7, 2026
Retailer 3HK$14,342 HKD
Retailer 7HK$14,609 HKD
Retailer 12HK$15,714 HKD
Retailer 6HK$16,286 HKD
Retailer 11HK$16,811 HKD
Retailer 14HK$17,713 HKD
Retailer 15HK$17,869 HKD
Retailer 5HK$18,081 HKD
Retailer 1HK$18,402 HKD
Retailer 2HK$20,017 HKD
Retailer 9HK$23,779 HKD
Retailer 8HK$24,194 HKD
Retailer 4HK$27,117 HKD
Retailer 13HK$28,951 HKD
Retailer 10HK$34,046 HKD

31 data points across 15 retailers

19 retailersHK$14,342 HKD to HK$34,046 HKD

A
Cheapest Retailer
-
HK$14,342 HKD
A
Retailer 2
-
HK$14,609 HKD
View
A
Retailer 3
-
HK$15,714 HKD
View
B+
Retailer 4
-
HK$16,286 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$16,811 HKD
View
B+
Retailer 6
-
HK$17,713 HKD
View
B+
Retailer 7
-
HK$17,869 HKD
View
B+
Retailer 8
-
HK$18,081 HKD
View
B+
Retailer 9
-
HK$18,402 HKD
View
B+
Retailer 10
-
HK$19,343 HKD
View
Retailer 11
-
HK$19,460 HKD
View
Price last confirmed 37 days ago
B+
Retailer 12
-
HK$20,017 HKD
View
B
Retailer 13
-
HK$23,779 HKD
View
Retailer 14
-
HK$23,920 HKD
View
Price last confirmed 36 days ago
B
Retailer 15
-
HK$24,194 HKD
View
B
Retailer 16
-
HK$27,117 HKD
View
B
Retailer 17
-
HK$28,951 HKD
View
B
Retailer 18
-
HK$34,046 HKD
View
Most Expensive
NZ Jewellers
62ffbbde-18a4-4360-8d7e-35c1b4843a32 · Sep 30
HK$40,512 HKD
$5,169 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from HK$14,342 HKDSave up to HK$19,703 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
1.20ct Radiant
HK$14,342 HKD