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Marquise|Natural|GIA

0.42ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6552563969

Certificate GIA 6552563969

Diamond specifications and retailer prices

From £340 GBP
SGD 616 SGD
As of November 1, 2026
Save £168 GBP (33%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £508 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

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 6552563969. Listed at 10 retailers as of October 27, 2026, with prices from £340 to £508, a £168 spread on the same certified stone. Wholesale Diamonds Direct lists it at £508. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.59°
Pavilion angle37.13°
OriginNatural
Grading LabGIA
CertificateGIA 6552563969
Dimensions7.58 × 3.96 × 2.31 mm
L/W Ratio1.91
Culet sizeNone
Top View
7.58 mm3.96 mm0.42 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552563969
Side View
Table 59.0%Crown 37.59°Girdle: THK-VTKPavilion 37.13°Culet: NoneDepth 58.3%

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: £490 GBP|Low: £340 GBP|High: £528 GBP|Avg: £435 GBP|-2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 2, 2026
Retailer 8£340 GBP
Retailer 7£360 GBP
Retailer 6£379 GBP
Retailer 5£400 GBP
Retailer 2£415 GBP
Retailer 4£443 GBP
Retailer 3£476 GBP
Retailer 1£490 GBP
Wholesale Diamonds Direct£508 GBP

37 data points across 9 retailers

10 retailers£340 GBP to £508 GBP

B+
Cheapest Retailer
-
£340 GBP
SGD 616 SGD
B+
Retailer 2
-
£360 GBP
SGD 653 SGD
View
B+
Retailer 3
-
£379 GBP
$508 USD
View
B
Retailer 4
-
£400 GBP
View
B+
Retailer 5
-
£415 GBP
View
B
Retailer 6
-
£443 GBP
$594 USD
View
B
Retailer 7
-
£475 GBP
$638 USD
View
B
Retailer 8
-
£476 GBP
$639 USD
View
B
Retailer 9
-
£490 GBP
€626 EUR
View
Most Expensive
B
Wholesale Diamonds Direct
574772557 · Oct 27
£508 GBP
$681 USD
View
9 more retailers have this diamond
Prices start from £340 GBPSave up to £168 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
£340 GBP