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Marquise|Natural|GIA

0.40ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2566665986

Certificate GIA 2566665986

Diamond specifications and retailer prices

From €229 EUR
₹24,493 INR
As of November 2, 2026
Save €334 EUR (59%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €563 EUR at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566665986. Listed at 3 retailers as of November 2, 2026, with prices from €229 to €563, a €334 spread on the same certified stone. 77 Diamonds lists it at €563. 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

0.40
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566665986
Dimensions6.94 × 3.99 × 2.35 mm
L/W Ratio1.74
Top View
6.94 mm3.99 mm0.40 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566665986
Side View
Table 55.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 59.0%

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 2
Current: €563 EUR|Low: €229 EUR|High: €563 EUR|Avg: €362 EUR|+0.8%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2€229 EUR
77 Diamonds€563 EUR

3 data points across 2 retailers

3 retailers€229 EUR to €563 EUR

A
Cheapest Retailer
-
€229 EUR
₹24,493 INR
B+
Retailer 2
-
€348 EUR
A$600 AUD
View
Most Expensive
B
77 Diamonds
MQCPUDNXWFVF · Nov 2
€563 EUR
£498 GBP
View
2 more retailers have this diamond
Prices start from €229 EURSave up to €334 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
0.40ct Marquise
€229 EUR