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Marquise|Natural|GIA

0.42ct H SI1 Marquise Natural Diamond

ID • H/SI1 • GIA 6562590359

Certificate GIA 6562590359

Diamond specifications and retailer prices

From £198 GBP
₹25,347 INR
As of November 2, 2026
Save £434 GBP (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £632 GBP at MOH London · As of November 1, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562590359. Listed at 12 retailers as of November 1, 2026, with prices from £198 to £632, a £434 spread on the same certified stone. MOH London lists it at £632. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.42
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6562590359
Dimensions7.42 × 3.91 × 2.48 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal
Top View
7.42 mm3.91 mm0.42 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6562590359
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £632 GBP|Low: £198 GBP|High: £644 GBP|Avg: £373 GBP|-1.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2£198 GBP
Retailer 11£231 GBP
Retailer 12£253 GBP
Retailer 7£319 GBP
Retailer 10£343 GBP
Retailer 8£352 GBP
Retailer 6£353 GBP
Retailer 3£395 GBP
Retailer 9£425 GBP
Retailer 4£436 GBP
Retailer 5£554 GBP
MOH London£632 GBP

20 data points across 12 retailers

12 retailers£198 GBP to £632 GBP

A
Cheapest Retailer
-
£198 GBP
₹25,347 INR
A
Retailer 2
-
£231 GBP
$310 USD
View
A
Retailer 3
-
£253 GBP
$339 USD
View
Final sale: no returns
B+
Retailer 4
-
£319 GBP
$428 USD
View
B+
Retailer 5
-
£343 GBP
View
B+
Retailer 6
-
£352 GBP
$473 USD
View
B+
Retailer 7
-
£353 GBP
View
B+
Retailer 8
-
£395 GBP
$530 USD
View
B+
Retailer 9
-
£425 GBP
ZAR 9,203 ZAR
View
B+
Retailer 10
-
£436 GBP
$585 USD
View
B
Retailer 11
-
£554 GBP
View
Most Expensive
B
MOH London
E997EB474 · Nov 1
£632 GBP
View
11 more retailers have this diamond
Prices start from £198 GBPSave up to £434 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.

A
0.42ct Marquise
£198 GBP