CaratHunter
Plans
Marquise|Natural|GIA

0.42ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 7551050655

Certificate GIA 7551050655

Diamond specifications and retailer prices

From $480 AUD
SGD 455 SGD
As of November 2, 2026
Save $137 AUD (22%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $617 AUD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.42ct natural marquise diamond

This 0.42ct natural marquise sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7551050655. Listed at 2 retailers as of November 2, 2026, with prices from $480 to $617, a $137 spread on the same certified stone. 77 Diamonds lists it at $617. 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

0.42
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551050655
Dimensions7.66 × 3.99 × 2.43 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Cloud
Top View
7.66 mm3.99 mm0.42 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551050655
Side View
Table 64.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.8%

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: $617 AUD|Low: $480 AUD|High: $636 AUD|Avg: $551 AUD|-1.2%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$480 AUD
77 Diamonds$617 AUD

39 data points across 2 retailers

2 retailers$480 AUD to $617 AUD

B+
Cheapest Retailer
-
$480 AUD
SGD 455 SGD
Most Expensive
B
77 Diamonds
MQCPBCUXX8Y3 · Nov 2
$617 AUD
£341 GBP
View
1 more retailer has this diamond
Prices start from $480 AUDSave up to $137 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+
0.42ct Marquise
$480 AUD