CaratHunter
Plans
Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 2556947990

Certificate GIA 2556947990

Diamond specifications and retailer prices

From $2,612 SGD
As of November 6, 2026
Save $3,208 SGD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,181 SGD 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: $5,165 SGD|Low: $2,612 SGD|High: $6,081 SGD|Avg: $3,620 SGD|-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 4$2,612 SGD
Retailer 5$2,675 SGD
Retailer 14$2,777 SGD
Retailer 3$3,005 SGD
Retailer 12$3,059 SGD
Retailer 6$3,069 SGD
Retailer 13$3,072 SGD
Retailer 7$3,223 SGD
Retailer 9$3,495 SGD
Retailer 2$3,817 SGD
Retailer 8$3,918 SGD
Retailer 10$4,055 SGD
Retailer 1$5,165 SGD
Retailer 11$5,820 SGD

27 data points across 14 retailers

21 retailers$2,612 SGD to $5,820 SGD

A
Cheapest Retailer
-
$2,612 SGD
Retailer 2
-
$2,675 SGD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$2,777 SGD
View
Final sale: no returns
B+
Retailer 4
-
$3,005 SGD
View
B+
Retailer 5
-
$3,059 SGD
View
B+
Retailer 6
-
$3,069 SGD
View
B+
Retailer 7
-
$3,072 SGD
View
B+
Retailer 8
-
$3,223 SGD
View
Retailer 9
-
$3,435 SGD
View
Price last confirmed 31 days ago
Retailer 10
-
$3,435 SGD
View
Price last confirmed 30 days ago
B+
Retailer 11
-
$3,495 SGD
View
Retailer 12
-
$3,626 SGD
View
Price last confirmed 37 days ago
B
Retailer 13
-
$3,817 SGD
View
Retailer 14
-
$3,847 SGD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
$3,918 SGD
View
Retailer 16
-
$3,963 SGD
View
Price last confirmed 29 days ago
Retailer 17
-
$4,028 SGD
View
Price last confirmed 62 days ago
B
Retailer 18
-
$4,055 SGD
View
B
Retailer 19
-
$5,165 SGD
View
B
Retailer 20
-
$5,820 SGD
View
Most Expensive
NZ Jewellers
d63d4123-be0c-4f0a-ac4c-091201eb873a · Oct 6
$7,181 SGD
$5,603 USD
View
Price last confirmed 31 days ago
20 more retailers have this diamond
Prices start from $2,612 SGDSave up to $3,208 SGD

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
$2,612 SGD