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Marquise|Natural|GIA

0.42ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 1558828198

Certificate GIA 1558828198

Diamond specifications and retailer prices

From £250 GBP
$336 USD
As of November 2, 2026
Save £88 GBP (26%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £338 GBP 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 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 1558828198. Listed at 3 retailers as of November 2, 2026, with prices from £250 to £338, a £88 spread on the same certified stone. 77 Diamonds lists it at £338. 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
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558828198
Dimensions7.48 × 3.90 × 2.47 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Cloud, Twinning Wisp, Feather
Top View
7.48 mm3.90 mm0.42 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1558828198
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.2%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £338 GBP|Low: £212 GBP|High: £338 GBP|Avg: £281 GBP|+3.6%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 2£250 GBP
Retailer 3£264 GBP
77 Diamonds£338 GBP

39 data points across 3 retailers

3 retailers£250 GBP to £338 GBP

B+
Cheapest Retailer
-
£250 GBP
$336 USD
Final sale: no returns
B+
Retailer 2
-
£264 GBP
SGD 478 SGD
View
Most Expensive
B
77 Diamonds
MQCPZS4YS4EZ · Nov 2
£338 GBP
View
2 more retailers have this diamond
Prices start from £250 GBPSave up to £88 GBP

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
£250 GBP