Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 6551145505

Certificate GIA 6551145505

Diamond specifications and retailer prices

From HK$16,302 HKD
As of November 5, 2026
Save HK$3,041 HKD (16%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$38,928 HKD at NZ Jewellers · As of October 17, 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 6551145505. Listed at 18 retailers as of November 5, 2026, with a relatively tight 19% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551145505
Dimensions7.09 × 5.43 × 3.73 mm
L/W Ratio1.31
Top View
7.09 mm5.43 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551145505
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.6%

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 5
Current: HK$16,302 HKD|Low: HK$13,841 HKD|High: HK$33,011 HKD|Avg: HK$20,344 HKD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 2HK$13,841 HKD
Retailer 5HK$14,726 HKD
Retailer 1HK$16,302 HKD
Retailer 9HK$17,180 HKD
Retailer 3HK$18,191 HKD
Retailer 4HK$19,507 HKD
Retailer 8HK$22,595 HKD
Retailer 10HK$22,917 HKD
Retailer 6HK$23,081 HKD
Retailer 7HK$32,792 HKD

27 data points across 10 retailers

18 retailersHK$16,302 HKD to HK$19,343 HKD

Retailer 1
-
HK$13,841 HKD
Price last confirmed 18 days ago
Retailer 2
-
HK$14,726 HKD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
HK$16,302 HKD
View
B+
Retailer 4
-
HK$17,462 HKD
View
Retailer 5
-
HK$17,477 HKD
View
Price last confirmed 16 days ago
Retailer 6
-
HK$18,622 HKD
View
Price last confirmed 22 days ago
Retailer 7
-
HK$18,622 HKD
View
Price last confirmed 20 days ago
B
Retailer 8
-
HK$19,343 HKD
View
Retailer 9
-
HK$19,445 HKD
View
Price last confirmed 17 days ago
Retailer 10
-
HK$19,476 HKD
View
Price last confirmed 22 days ago
Retailer 11
-
HK$19,507 HKD
View
Price last confirmed 17 days ago
Retailer 12
-
HK$19,711 HKD
View
Price last confirmed 20 days ago
Retailer 13
-
HK$20,220 HKD
View
Price last confirmed 17 days ago
Retailer 14
-
HK$21,482 HKD
View
Price last confirmed 19 days ago
Retailer 15
-
HK$22,595 HKD
View
Price last confirmed 21 days ago
Retailer 16
-
HK$22,917 HKD
View
Price last confirmed 31 days ago
Retailer 17
-
HK$32,792 HKD
View
Price last confirmed 19 days ago
Most Expensive
NZ Jewellers
466366b3-12a7-4089-a98e-e167588e8ce3 · Oct 17
HK$38,928 HKD
$4,967 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from HK$16,302 HKDSave up to HK$3,041 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+
1.20ct Radiant
HK$16,302 HKD