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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 7551009950

Certificate GIA 7551009950

Diamond specifications and retailer prices

From HK$27,548 HKD
As of November 6, 2026
Save HK$31,735 HKD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$59,283 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise 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 7551009950. Listed at 20 retailers as of November 4, 2026, with prices from HK$27,548 to HK$59,283, a HK$31,735 spread on the same certified stone. MOH London lists it at HK$59,283. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551009950
Dimensions10.45 × 5.51 × 3.48 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
10.45 mm5.51 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551009950
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.1%

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$59,283 HKD|Low: HK$27,548 HKD|High: HK$60,159 HKD|Avg: HK$39,157 HKD|-1.3%
MOH London
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 9HK$27,548 HKD
Retailer 5HK$29,453 HKD
Retailer 12HK$30,362 HKD
Retailer 3HK$33,811 HKD
Retailer 10HK$34,367 HKD
Retailer 4HK$35,402 HKD
Retailer 7HK$36,530 HKD
Retailer 11HK$37,620 HKD
Retailer 6HK$39,626 HKD
Retailer 2HK$40,135 HKD
Retailer 8HK$45,535 HKD
MOH LondonHK$59,283 HKD

44 data points across 12 retailers

20 retailersHK$27,548 HKD to HK$59,283 HKD

B+
Cheapest Retailer
-
HK$27,548 HKD
B+
Retailer 2
-
HK$28,332 HKD
View
B
Retailer 3
-
HK$29,163 HKD
View
B+
Retailer 4
-
HK$29,453 HKD
View
B
Retailer 5
-
HK$29,759 HKD
View
B
Retailer 6
-
HK$29,821 HKD
View
B
Retailer 7
-
HK$33,638 HKD
View
Retailer 8
-
HK$33,811 HKD
View
Price last confirmed 13 days ago
B
Retailer 9
-
HK$34,367 HKD
View
B
Retailer 10
-
HK$34,829 HKD
View
Retailer 11
-
HK$35,292 HKD
View
Price last confirmed 15 days ago
B
Retailer 12
-
HK$35,402 HKD
View
B
Retailer 13
-
HK$36,530 HKD
View
Retailer 14
-
HK$37,620 HKD
View
Price last confirmed 29 days ago
B
Retailer 15
-
HK$38,803 HKD
View
B
Retailer 16
-
HK$39,626 HKD
View
B
Retailer 17
-
HK$40,135 HKD
View
B
Retailer 18
-
HK$45,535 HKD
View
B
Retailer 19
-
HK$54,000 HKD
View
Most Expensive
B
MOH London
CBFC25F1D · Nov 4
HK$59,283 HKD
£5,956 GBP
View
19 more retailers have this diamond
Prices start from HK$27,548 HKDSave up to HK$31,735 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 Marquise
HK$27,548 HKD