CaratHunter
Plans
Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1555023523

Certificate GIA 1555023523

Diamond specifications and retailer prices

From €2,509 EUR
As of November 6, 2026
Save €2,979 EUR (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: €6,135 EUR at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555023523. Listed at 25 retailers as of November 4, 2026, with a 119% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555023523
Dimensions9.87 × 5.19 × 3.24 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle, Indented Natural, Natural
Top View
9.87 mm5.19 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555023523
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.4%

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: €2,598 EUR|Low: €2,509 EUR|High: €5,563 EUR|Avg: €3,677 EUR|-1.1%
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
November 6, 2026
Retailer 13€2,509 EUR
Retailer 1€2,598 EUR
Retailer 9€2,937 EUR
Retailer 5€2,977 EUR
Retailer 2€3,065 EUR
Retailer 6€3,192 EUR
Retailer 4€3,291 EUR
Retailer 7€3,386 EUR
Retailer 12€3,418 EUR
Retailer 11€3,837 EUR
Retailer 8€4,017 EUR
Retailer 3€5,097 EUR
Retailer 10€5,488 EUR

24 data points across 13 retailers

25 retailers€2,509 EUR to €5,488 EUR

A
Cheapest Retailer
-
€2,509 EUR
A
Retailer 2
-
€2,598 EUR
View
A
Retailer 3
-
€2,937 EUR
View
A
Retailer 4
-
€2,969 EUR
View
A
Retailer 5
-
€2,977 EUR
View
A
Retailer 6
-
€3,037 EUR
View
Final sale: no returns
A
Retailer 7
-
€3,065 EUR
View
B+
Retailer 8
-
€3,065 EUR
View
B+
Retailer 9
-
€3,162 EUR
View
A
Retailer 10
-
€3,192 EUR
View
Retailer 11
-
€3,291 EUR
View
Price last confirmed 8 days ago
Retailer 12
-
€3,291 EUR
View
Price last confirmed 21 days ago
B+
Retailer 13
-
€3,386 EUR
View
B+
Retailer 14
-
€3,418 EUR
View
B+
Retailer 15
-
€3,420 EUR
View
B+
Retailer 16
-
€3,421 EUR
View
B+
Retailer 17
-
€3,466 EUR
View
Retailer 18
-
€3,522 EUR
View
Price last confirmed 38 days ago
Retailer 19
-
€3,576 EUR
View
Price last confirmed 29 days ago
B+
Retailer 20
-
€3,837 EUR
View
B+
Retailer 21
-
€4,017 EUR
View
Retailer 22
-
€4,064 EUR
View
Price last confirmed 38 days ago
Retailer 23
-
€5,097 EUR
View
Price last confirmed 9 days ago
B
Retailer 24
-
€5,488 EUR
View
Most Expensive
NZ Jewellers
59feb36f-121a-4f76-9f73-37702296f960 · Sep 29
€6,135 EUR
$6,886 USD
View
Price last confirmed 37 days ago
24 more retailers have this diamond
Prices start from €2,509 EURSave up to €2,979 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
€2,509 EUR