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Marquise|Natural|GIA

0.42ct J SI2 Marquise Natural Diamond

GD • J/SI2 • GIA 1558824908

Certificate GIA 1558824908

Diamond specifications and retailer prices

From $471 AUD
$330 USD
As of November 1, 2026
Save $174 AUD (27%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $645 AUD at 77 Diamonds · As of October 31, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558824908. Listed at 3 retailers as of October 31, 2026, with prices from $471 to $645, a $174 spread on the same certified stone. 77 Diamonds lists it at $645. 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558824908
Dimensions8.21 × 3.64 × 2.39 mm
L/W Ratio2.26
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
8.21 mm3.64 mm0.42 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558824908
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.7%

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 1
Current: $645 AUD|Low: $404 AUD|High: $645 AUD|Avg: $519 AUD|+3.6%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 2$471 AUD
Retailer 3$478 AUD
Retailer 4$503 AUD
77 Diamonds$645 AUD

36 data points across 4 retailers

3 retailers$471 AUD to $645 AUD

B+
Cheapest Retailer
-
$471 AUD
$330 USD
B+
Retailer 2
-
$503 AUD
SGD 476 SGD
View
Most Expensive
B
77 Diamonds
MQCPSCFHBDDX · Oct 31
$645 AUD
£356 GBP
View
2 more retailers have this diamond
Prices start from $471 AUDSave up to $174 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
$471 AUD