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Marquise|Natural|GIA

1.03ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 1558400654

Certificate GIA 1558400654

Diamond specifications and retailer prices

From €2,760 EUR
As of November 6, 2026
Save €1,012 EUR (27%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €3,772 EUR at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.03ct natural marquise diamond

This 1.03ct natural marquise sits in the classic one-carat band, graded D 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 1558400654. Listed at 7 retailers as of November 5, 2026, with prices from €2,760 to €3,772, a €1,012 spread on the same certified stone. Blue Nile lists it at €3,772. 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

1.03
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558400654
Dimensions10.10 × 5.27 × 3.33 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
10.10 mm5.27 mm1.03 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558400654
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

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: €3,772 EUR|Low: €2,760 EUR|High: €3,901 EUR|Avg: €3,291 EUR|-3.3%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2€2,760 EUR
Retailer 4€3,165 EUR
Retailer 5€3,249 EUR
Retailer 6€3,339 EUR
Retailer 3€3,354 EUR
Blue Nile€3,772 EUR

45 data points across 6 retailers

7 retailers€2,760 EUR to €3,772 EUR

A
Cheapest Retailer
-
€2,760 EUR
B+
Retailer 2
-
€3,165 EUR
View
B+
Retailer 3
-
€3,249 EUR
View
Final sale: no returns
B+
Retailer 4
-
€3,339 EUR
View
B+
Retailer 5
-
€3,354 EUR
View
B+
Retailer 6
-
€3,513 EUR
View
Most Expensive
B+
Blue Nile
29298314 · Nov 5
€3,772 EUR
$4,211 USD
View
6 more retailers have this diamond
Prices start from €2,760 EURSave up to €1,012 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
1.03ct Marquise
€2,760 EUR