CaratHunter
Plans
Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6555512678

Certificate GIA 6555512678

Diamond specifications and retailer prices

From HK$16,302 HKD
As of November 6, 2026
Save HK$23,669 HKD (59%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$39,971 HKD at NZ Jewellers · As of November 5, 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 6555512678. Listed at 18 retailers as of November 5, 2026, with prices from HK$16,302 to HK$39,971, a HK$23,669 spread on the same certified stone. NZ Jewellers lists it at HK$39,971. 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
SymmetryExcellent
FluorescenceNone
Crown angle37°
OriginNatural
Grading LabGIA
CertificateGIA 6555512678
Dimensions9.77 × 5.25 × 3.39 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Feather, Crystal, Pinpoint, Knot
Top View
9.77 mm5.25 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555512678
Side View
Table 61.0%Crown 37°Girdle: STK-VTKPavilionCulet: NDepth 64.6%

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 6
Current: HK$39,971 HKD|Low: HK$16,302 HKD|High: HK$40,692 HKD|Avg: HK$22,034 HKD|-1.8%
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 9HK$16,302 HKD
Retailer 4HK$17,274 HKD
Retailer 5HK$17,642 HKD
Retailer 2HK$18,543 HKD
Retailer 14HK$19,006 HKD
Retailer 7HK$19,123 HKD
Retailer 17HK$19,123 HKD
Retailer 6HK$20,001 HKD
Retailer 3HK$20,213 HKD
Retailer 11HK$20,228 HKD
Retailer 16HK$20,738 HKD
Retailer 8HK$20,769 HKD
Retailer 15HK$22,062 HKD
Retailer 10HK$23,332 HKD
Retailer 13HK$23,771 HKD
Retailer 12HK$33,403 HKD
NZ JewellersHK$39,971 HKD

27 data points across 17 retailers

18 retailersHK$16,302 HKD to HK$39,971 HKD

B+
Cheapest Retailer
-
HK$16,302 HKD
B+
Retailer 2
-
HK$17,274 HKD
View
B+
Retailer 3
-
HK$17,642 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$18,543 HKD
View
B+
Retailer 5
-
HK$19,006 HKD
View
B+
Retailer 6
-
HK$19,123 HKD
View
Retailer 7
-
HK$19,123 HKD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
HK$20,001 HKD
View
B+
Retailer 9
-
HK$20,213 HKD
View
B+
Retailer 10
-
HK$20,228 HKD
View
B
Retailer 11
-
HK$20,738 HKD
View
B
Retailer 12
-
HK$20,769 HKD
View
B+
Retailer 13
-
HK$22,062 HKD
View
B
Retailer 14
-
HK$23,332 HKD
View
B
Retailer 15
-
HK$23,771 HKD
View
Retailer 16
-
HK$24,884 HKD
View
Price last confirmed 30 days ago
B
Retailer 17
-
HK$33,403 HKD
View
Most Expensive
B
NZ Jewellers
71be0534-a66f-4f59-9929-7973de153c9d · Nov 5
HK$39,971 HKD
$5,100 USD
View
17 more retailers have this diamond
Prices start from HK$16,302 HKDSave up to HK$23,669 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+
1.00ct Marquise
HK$16,302 HKD