Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2556243794

Certificate GIA 2556243794

Diamond specifications and retailer prices

From €1,715 EUR
As of November 6, 2026
Save €2,307 EUR (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €4,814 EUR 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: €4,814 EUR|Low: €1,715 EUR|High: €4,814 EUR|Avg: €2,839 EUR
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€1,715 EUR
Retailer 9€2,020 EUR
Retailer 11€2,125 EUR
Retailer 4€2,279 EUR
Retailer 3€2,409 EUR
Retailer 5€2,422 EUR
Retailer 12€2,580 EUR
Retailer 6€2,811 EUR
Retailer 8€2,874 EUR
Retailer 10€3,314 EUR
Retailer 7€4,022 EUR
NZ Jewellers€4,814 EUR

34 data points across 12 retailers

19 retailers€1,715 EUR to €4,022 EUR

A
Cheapest Retailer
-
€1,715 EUR
B+
Retailer 2
-
€2,020 EUR
View
B+
Retailer 3
-
€2,062 EUR
View
B+
Retailer 4
-
€2,102 EUR
View
B+
Retailer 5
-
€2,125 EUR
View
Final sale: no returns
B
Retailer 6
-
€2,279 EUR
View
Retailer 7
-
€2,303 EUR
View
Price last confirmed 46 days ago
Retailer 8
-
€2,303 EUR
View
Price last confirmed 26 days ago
Retailer 9
-
€2,303 EUR
View
Price last confirmed 30 days ago
B
Retailer 10
-
€2,422 EUR
View
Retailer 11
-
€2,580 EUR
View
Price last confirmed 31 days ago
B
Retailer 12
-
€2,648 EUR
View
Retailer 13
-
€2,657 EUR
View
Price last confirmed 46 days ago
Retailer 14
-
€2,657 EUR
View
Price last confirmed 29 days ago
B
Retailer 15
-
€2,811 EUR
View
B
Retailer 16
-
€2,874 EUR
View
Retailer 17
-
€3,314 EUR
View
Price last confirmed 11 days ago
B
Retailer 18
-
€4,022 EUR
View
Most Expensive
NZ Jewellers
24ef520f-79b3-42a4-b61e-99c23dea28c3 · Sep 30
€4,814 EUR
$5,375 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from €1,715 EURSave up to €2,307 EUR

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
€1,715 EUR