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Marquise|Natural|GIA

0.42ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 2564119166

Certificate GIA 2564119166

Diamond specifications and retailer prices

From $542 AUD
$380 USD
As of November 1, 2026
Save $136 AUD (20%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $678 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 H 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 2564119166. Listed at 4 retailers as of November 1, 2026, with prices from $542 to $678, a $136 spread on the same certified stone. 77 Diamonds lists it at $678. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2564119166
Dimensions7.72 × 4.01 × 2.37 mm
L/W Ratio1.93
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
7.72 mm4.01 mm0.42 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2564119166
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.1%

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: $678 AUD|Low: $465 AUD|High: $683 AUD|Avg: $582 AUD|+4.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$542 AUD
Retailer 3$549 AUD
Retailer 4$586 AUD
77 Diamonds$678 AUD

38 data points across 4 retailers

4 retailers$542 AUD to $678 AUD

B+
Cheapest Retailer
-
$542 AUD
$380 USD
B+
Retailer 2
-
$549 AUD
$385 USD
View
Final sale: no returns
B+
Retailer 3
-
$586 AUD
SGD 555 SGD
View
Most Expensive
B
77 Diamonds
MQCPBUHZJ5MM · Nov 2
$678 AUD
£374 GBP
View
3 more retailers have this diamond
Prices start from $542 AUDSave up to $136 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
$542 AUD