Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2556243794

Certificate GIA 2556243794

Diamond specifications and retailer prices

From $1,915 USD
As of November 6, 2026
Save $2,576 USD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,375 USD 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,375 USD|Low: $1,915 USD|High: $5,375 USD|Avg: $3,173 USD
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 2$1,915 USD
Retailer 9$2,255 USD
Retailer 11$2,372 USD
Retailer 4$2,545 USD
Retailer 3$2,690 USD
Retailer 5$2,704 USD
Retailer 12$2,880 USD
Retailer 6$3,138 USD
Retailer 8$3,209 USD
Retailer 10$3,700 USD
Retailer 7$4,491 USD
NZ Jewellers$5,375 USD

35 data points across 12 retailers

19 retailers$1,915 USD to $4,491 USD

A
Cheapest Retailer
-
$1,915 USD
B+
Retailer 2
-
$2,255 USD
View
B+
Retailer 3
-
$2,302 USD
View
B+
Retailer 4
-
$2,347 USD
View
B+
Retailer 5
-
$2,372 USD
View
Final sale: no returns
B
Retailer 6
-
$2,545 USD
View
Retailer 7
-
$2,571 USD
View
Price last confirmed 45 days ago
Retailer 8
-
$2,571 USD
View
Price last confirmed 25 days ago
Retailer 9
-
$2,571 USD
View
Price last confirmed 29 days ago
B
Retailer 10
-
$2,704 USD
View
Retailer 11
-
$2,880 USD
View
Price last confirmed 30 days ago
B
Retailer 12
-
$2,956 USD
View
Retailer 13
-
$2,967 USD
View
Price last confirmed 45 days ago
Retailer 14
-
$2,967 USD
View
Price last confirmed 28 days ago
B
Retailer 15
-
$3,138 USD
View
B
Retailer 16
-
$3,209 USD
View
Retailer 17
-
$3,700 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
$4,491 USD
View
Most Expensive
NZ Jewellers
24ef520f-79b3-42a4-b61e-99c23dea28c3 · Sep 30
$5,375 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from $1,915 USDSave up to $2,576 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
$1,915 USD