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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 $367 AUD
₹24,493 INR
As of November 2, 2026
Save $535 AUD (59%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $902 AUD 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 $367 to $902, a $535 spread on the same certified stone. 77 Diamonds lists it at $902. 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: $902 AUD|Low: $367 AUD|High: $902 AUD|Avg: $579 AUD|+0.8%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$367 AUD
77 Diamonds$902 AUD

3 data points across 2 retailers

3 retailers$367 AUD to $902 AUD

A
Cheapest Retailer
-
$367 AUD
₹24,493 INR
B+
Retailer 2
-
$557 AUD
View
Most Expensive
B
77 Diamonds
MQCPUDNXWFVF · Nov 2
$902 AUD
£498 GBP
View
2 more retailers have this diamond
Prices start from $367 AUDSave up to $535 AUD

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
$367 AUD