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Marquise|Natural|GIA

0.40ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 6532953939

Certificate GIA 6532953939

Diamond specifications and retailer prices

From $401 AUD
$281 USD
As of November 2, 2026
Save $133 AUD (25%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $534 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6532953939. Listed at 3 retailers as of November 2, 2026, with prices from $401 to $534, a $133 spread on the same certified stone. 77 Diamonds lists it at $534. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

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

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6532953939
Dimensions6.87 × 3.88 × 2.53 mm
L/W Ratio1.77
Top View
6.87 mm3.88 mm0.40 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6532953939
Side View
Table 58.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 65.3%

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: $534 AUD|Low: $354 AUD|High: $579 AUD|Avg: $456 AUD|-6.1%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 2$401 AUD
Retailer 3$416 AUD
77 Diamonds$534 AUD

39 data points across 3 retailers

3 retailers$401 AUD to $534 AUD

A
Cheapest Retailer
-
$401 AUD
$281 USD
Final sale: no returns
B+
Retailer 2
-
$416 AUD
SGD 394 SGD
View
Most Expensive
B+
77 Diamonds
MQCPBUFJVFEM · Nov 2
$534 AUD
£295 GBP
View
2 more retailers have this diamond
Prices start from $401 AUDSave up to $133 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
$401 AUD