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Marquise|Natural|GIA

0.40ct J SI2 Marquise Natural Diamond

GD • J/SI2 • GIA 2554828426

Certificate GIA 2554828426

Diamond specifications and retailer prices

From $407 AUD
SGD 386 SGD
As of November 1, 2026
Save $115 AUD (22%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $521 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 J 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 2554828426. Listed at 2 retailers as of November 1, 2026, with prices from $407 to $521, a $115 spread on the same certified stone. 77 Diamonds lists it at $521. 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
J
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554828426
Dimensions6.95 × 3.75 × 2.49 mm
L/W Ratio1.85
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
6.95 mm3.75 mm0.40 ctJ / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2554828426
Side View
Table 58.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 66.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $521 AUD|Low: $407 AUD|High: $521 AUD|Avg: $500 AUD|+2.2%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$407 AUD
77 Diamonds$521 AUD

39 data points across 2 retailers

2 retailers$407 AUD to $521 AUD

B+
Cheapest Retailer
-
$407 AUD
SGD 386 SGD
Most Expensive
B
77 Diamonds
MQCPMAT4SGEE · Nov 2
$521 AUD
£288 GBP
View
1 more retailer has this diamond
Prices start from $407 AUDSave up to $115 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.

B+
0.40ct Marquise
$407 AUD