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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 $329 SGD
₹24,493 INR
As of November 2, 2026
Save $479 SGD (59%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $808 SGD 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 $329 to $808, a $479 spread on the same certified stone. 77 Diamonds lists it at $808. 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: $808 SGD|Low: $329 SGD|High: $808 SGD|Avg: $519 SGD|+0.8%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$329 SGD
77 Diamonds$808 SGD

3 data points across 2 retailers

3 retailers$329 SGD to $808 SGD

A
Cheapest Retailer
-
$329 SGD
₹24,493 INR
B+
Retailer 2
-
$499 SGD
A$600 AUD
View
Most Expensive
B
77 Diamonds
MQCPUDNXWFVF · Nov 2
$808 SGD
£498 GBP
View
2 more retailers have this diamond
Prices start from $329 SGDSave up to $479 SGD

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
$329 SGD