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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2556243794

Certificate GIA 2556243794

Diamond specifications and retailer prices

From HK$15,009 HKD
As of November 6, 2026
Save HK$20,189 HKD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$42,126 HKD at NZ Jewellers · As of September 30, 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 2556243794. Listed at 19 retailers as of November 4, 2026, with a 135% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2556243794
Dimensions9.61 × 5.14 × 3.30 mm
L/W Ratio1.87
Top View
9.61 mm5.14 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2556243794
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.3%

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$42,126 HKD|Low: HK$15,009 HKD|High: HK$42,126 HKD|Avg: HK$24,871 HKD
NZ Jewellers
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 2HK$15,009 HKD
Retailer 9HK$17,673 HKD
Retailer 11HK$18,590 HKD
Retailer 4HK$19,946 HKD
Retailer 3HK$21,083 HKD
Retailer 5HK$21,192 HKD
Retailer 12HK$22,572 HKD
Retailer 6HK$24,594 HKD
Retailer 8HK$25,150 HKD
Retailer 10HK$28,998 HKD
Retailer 7HK$35,198 HKD
NZ JewellersHK$42,126 HKD

35 data points across 12 retailers

19 retailersHK$15,009 HKD to HK$35,198 HKD

A
Cheapest Retailer
-
HK$15,009 HKD
B+
Retailer 2
-
HK$17,673 HKD
View
B+
Retailer 3
-
HK$18,042 HKD
View
B+
Retailer 4
-
HK$18,394 HKD
View
B+
Retailer 5
-
HK$18,590 HKD
View
Final sale: no returns
B
Retailer 6
-
HK$19,946 HKD
View
Retailer 7
-
HK$20,150 HKD
View
Price last confirmed 45 days ago
Retailer 8
-
HK$20,150 HKD
View
Price last confirmed 25 days ago
Retailer 9
-
HK$20,150 HKD
View
Price last confirmed 29 days ago
B
Retailer 10
-
HK$21,192 HKD
View
Retailer 11
-
HK$22,572 HKD
View
Price last confirmed 30 days ago
B
Retailer 12
-
HK$23,167 HKD
View
Retailer 13
-
HK$23,254 HKD
View
Price last confirmed 45 days ago
Retailer 14
-
HK$23,254 HKD
View
Price last confirmed 28 days ago
B
Retailer 15
-
HK$24,594 HKD
View
B
Retailer 16
-
HK$25,150 HKD
View
Retailer 17
-
HK$28,998 HKD
View
Price last confirmed 10 days ago
B
Retailer 18
-
HK$35,198 HKD
View
Most Expensive
NZ Jewellers
24ef520f-79b3-42a4-b61e-99c23dea28c3 · Sep 30
HK$42,126 HKD
$5,375 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from HK$15,009 HKDSave up to HK$20,189 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$15,009 HKD