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Marquise|Natural|GIA

0.42ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 5556822319

Certificate GIA 5556822319

Diamond specifications and retailer prices

From $330 USD
As of November 1, 2026
3 retailers carry this diamond
Most expensive: $330 USD at Rare Carat
View at Rare Carat

About this 0.42ct natural marquise diamond

This 0.42ct natural marquise sits in the sub-half-carat band, graded I 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 5556822319. Listed at 3 retailers as of November 1, 2026. 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
I
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5556822319
Dimensions6.90 × 3.92 × 2.60 mm
L/W Ratio1.76
Culet sizeNone
Key to symbols
Cloud, Feather
Top View
6.90 mm3.92 mm0.42 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5556822319
Side View
Table 62.0%CrownGirdle: STK-ETKPavilionCuletDepth 66.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: $330 USD|Low: $310 USD|High: $340 USD|Avg: $327 USD|+6.5%
October 21, 2026
Rare Carat$330 USD

5 data points across 1 retailer

3 retailers

Retailer 1
-
$295 USD
Price last confirmed 11 days ago
Retailer 2
-
$310 USD
View
Price last confirmed 11 days ago
Most Expensive
B+
Rare Carat
1558828198 · Nov 1
$330 USD
View
2 more retailers have this diamond

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
$330 USD