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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5556715240

Certificate GIA 5556715240

Diamond specifications and retailer prices

From HK$14,742 HKD
As of November 6, 2026
Save HK$19,562 HKD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$40,943 HKD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5556715240. Listed at 20 retailers as of November 2, 2026, with a 133% 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5556715240
Dimensions6.85 × 6.88 × 4.16 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.85 mm6.88 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556715240
Side View
Table 61.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.6%

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$15,314 HKD|Low: HK$14,742 HKD|High: HK$34,673 HKD|Avg: HK$21,136 HKD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11HK$14,742 HKD
Retailer 1HK$15,314 HKD
Retailer 8HK$17,164 HKD
Retailer 3HK$18,073 HKD
Retailer 12HK$18,222 HKD
Retailer 2HK$18,387 HKD
Retailer 5HK$20,463 HKD
Retailer 6HK$20,597 HKD
Retailer 4HK$21,913 HKD
Retailer 7HK$23,904 HKD
Retailer 9HK$24,374 HKD
Retailer 10HK$34,304 HKD

32 data points across 12 retailers

20 retailersHK$14,742 HKD to HK$34,304 HKD

A
Cheapest Retailer
-
HK$14,742 HKD
A
Retailer 2
-
HK$15,314 HKD
View
A
Retailer 3
-
HK$17,164 HKD
View
B+
Retailer 4
-
HK$18,073 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$18,222 HKD
View
B+
Retailer 6
-
HK$18,222 HKD
View
B+
Retailer 7
-
HK$18,387 HKD
View
Retailer 8
-
HK$19,586 HKD
View
Price last confirmed 40 days ago
B+
Retailer 9
-
HK$20,142 HKD
View
B+
Retailer 10
-
HK$20,463 HKD
View
Retailer 11
-
HK$20,487 HKD
View
Price last confirmed 39 days ago
B+
Retailer 12
-
HK$20,597 HKD
View
B+
Retailer 13
-
HK$20,683 HKD
View
Retailer 14
-
HK$21,913 HKD
View
Price last confirmed 32 days ago
Retailer 15
-
HK$22,595 HKD
View
Price last confirmed 39 days ago
B+
Retailer 16
-
HK$23,904 HKD
View
B+
Retailer 17
-
HK$24,374 HKD
View
B
Retailer 18
-
HK$34,304 HKD
View
Retailer 19
-
HK$40,943 HKD
View
Price last confirmed 35 days ago
Most Expensive
NZ Jewellers
6fdbfa8c-9bca-494e-ab38-9a8eada9774d · Sep 28
HK$40,943 HKD
$5,224 USD
View
Price last confirmed 39 days ago
19 more retailers have this diamond
Prices start from HK$14,742 HKDSave up to HK$19,562 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 Round
HK$14,742 HKD