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 $2,038 USD
As of November 6, 2026
Save $2,503 USD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,603 USD 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
Color
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: $4,030 USD|Low: $2,038 USD|High: $4,745 USD|Avg: $2,825 USD|-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$2,038 USD
Retailer 5$2,087 USD
Retailer 14$2,167 USD
Retailer 3$2,345 USD
Retailer 12$2,387 USD
Retailer 6$2,395 USD
Retailer 13$2,397 USD
Retailer 7$2,515 USD
Retailer 9$2,727 USD
Retailer 2$2,978 USD
Retailer 8$3,057 USD
Retailer 10$3,164 USD
Retailer 1$4,030 USD
Retailer 11$4,541 USD

27 data points across 14 retailers

21 retailers$2,038 USD to $4,541 USD

A
Cheapest Retailer
-
$2,038 USD
Retailer 2
-
$2,087 USD
View
Price last confirmed 16 days ago
B+
Retailer 3
-
$2,167 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,345 USD
View
B+
Retailer 5
-
$2,387 USD
View
B+
Retailer 6
-
$2,395 USD
View
B+
Retailer 7
-
$2,397 USD
View
B+
Retailer 8
-
$2,515 USD
View
Retailer 9
-
$2,680 USD
View
Price last confirmed 30 days ago
Retailer 10
-
$2,680 USD
View
Price last confirmed 29 days ago
B+
Retailer 11
-
$2,727 USD
View
Retailer 12
-
$2,829 USD
View
Price last confirmed 36 days ago
B
Retailer 13
-
$2,978 USD
View
Retailer 14
-
$3,002 USD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
$3,057 USD
View
Retailer 16
-
$3,092 USD
View
Price last confirmed 28 days ago
Retailer 17
-
$3,143 USD
View
Price last confirmed 61 days ago
B
Retailer 18
-
$3,164 USD
View
B
Retailer 19
-
$4,030 USD
View
B
Retailer 20
-
$4,541 USD
View
Most Expensive
NZ Jewellers
d63d4123-be0c-4f0a-ac4c-091201eb873a · Oct 6
$5,603 USD
View
Price last confirmed 31 days ago
20 more retailers have this diamond
Prices start from $2,038 USDSave up to $2,503 USD

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
$2,038 USD