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Marquise|Natural|GIA

0.40ct J SI2 Marquise Natural Diamond

GD • J/SI2 • GIA 2556124525

Certificate GIA 2556124525

Diamond specifications and retailer prices

From $381 AUD
$267 USD
As of November 2, 2026
Save $124 AUD (24%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $505 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 2556124525. Listed at 3 retailers as of November 2, 2026, with prices from $381 to $505, a $124 spread on the same certified stone. 77 Diamonds lists it at $505. 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
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556124525
Dimensions7.01 × 3.79 × 2.47 mm
L/W Ratio1.85
Top View
7.01 mm3.79 mm0.40 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 2556124525
Side View
Table 62.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 65.2%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $505 AUD|Low: $381 AUD|High: $522 AUD|Avg: $441 AUD|-2.7%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 2$381 AUD
Retailer 3$392 AUD
77 Diamonds$505 AUD

39 data points across 3 retailers

3 retailers$381 AUD to $505 AUD

B+
Cheapest Retailer
-
$381 AUD
$267 USD
Final sale: no returns
B+
Retailer 2
-
$392 AUD
SGD 371 SGD
View
Most Expensive
B+
77 Diamonds
MQCPH63AGZXH · Nov 2
$505 AUD
£278 GBP
View
2 more retailers have this diamond
Prices start from $381 AUDSave up to $124 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
$381 AUD