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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 2556947990

Certificate GIA 2556947990

Diamond specifications and retailer prices

From HK$15,973 HKD
As of November 6, 2026
Save HK$19,617 HKD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$43,913 HKD at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct 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 2556947990. Listed at 21 retailers as of November 2, 2026, with a 123% 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

1.00
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556947990
Dimensions9.73 × 5.17 × 3.30 mm
L/W Ratio1.88
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Twinning Wisp, Crystal, Needle
Top View
9.73 mm5.17 mm1.00 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556947990
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.9%

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$31,585 HKD|Low: HK$15,973 HKD|High: HK$37,188 HKD|Avg: HK$22,139 HKD|-2.2%
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
November 6, 2026
Retailer 4HK$15,973 HKD
Retailer 5HK$16,357 HKD
Retailer 14HK$16,984 HKD
Retailer 3HK$18,379 HKD
Retailer 12HK$18,708 HKD
Retailer 6HK$18,771 HKD
Retailer 13HK$18,786 HKD
Retailer 7HK$19,711 HKD
Retailer 9HK$21,373 HKD
Retailer 2HK$23,340 HKD
Retailer 8HK$23,959 HKD
Retailer 10HK$24,798 HKD
Retailer 1HK$31,585 HKD
Retailer 11HK$35,590 HKD

27 data points across 14 retailers

21 retailersHK$15,973 HKD to HK$35,590 HKD

A
Cheapest Retailer
-
HK$15,973 HKD
Retailer 2
-
HK$16,357 HKD
View
Price last confirmed 16 days ago
B+
Retailer 3
-
HK$16,984 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$18,379 HKD
View
B+
Retailer 5
-
HK$18,708 HKD
View
B+
Retailer 6
-
HK$18,771 HKD
View
B+
Retailer 7
-
HK$18,786 HKD
View
B+
Retailer 8
-
HK$19,711 HKD
View
Retailer 9
-
HK$21,004 HKD
View
Price last confirmed 30 days ago
Retailer 10
-
HK$21,004 HKD
View
Price last confirmed 29 days ago
B+
Retailer 11
-
HK$21,373 HKD
View
Retailer 12
-
HK$22,172 HKD
View
Price last confirmed 36 days ago
B
Retailer 13
-
HK$23,340 HKD
View
Retailer 14
-
HK$23,528 HKD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
HK$23,959 HKD
View
Retailer 16
-
HK$24,233 HKD
View
Price last confirmed 28 days ago
Retailer 17
-
HK$24,633 HKD
View
Price last confirmed 61 days ago
B
Retailer 18
-
HK$24,798 HKD
View
B
Retailer 19
-
HK$31,585 HKD
View
B
Retailer 20
-
HK$35,590 HKD
View
Most Expensive
NZ Jewellers
d63d4123-be0c-4f0a-ac4c-091201eb873a · Oct 6
HK$43,913 HKD
$5,603 USD
View
Price last confirmed 31 days ago
20 more retailers have this diamond
Prices start from HK$15,973 HKDSave up to HK$19,617 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
1.00ct Marquise
HK$15,973 HKD