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Cushion|Natural|GIA

0.42ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 5231733076

Certificate GIA 5231733076

Diamond specifications and retailer prices

From £599 GBP
As of November 2, 2026
Save £523 GBP (47%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,122 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.42ct natural cushion diamond

This 0.42ct natural cushion sits in the sub-half-carat band, graded G 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 5231733076. Listed at 5 retailers as of November 1, 2026, with prices from £599 to £1,122, a £523 spread on the same certified stone. MOH London lists it at £1,122. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231733076
Dimensions4.36 × 4.32 × 2.97 mm
L/W Ratio1.01
Top View
4.36 mm4.32 mm0.42 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231733076
Side View
Table 63.0%CrownGirdlePavilionCulet: NoneDepth 68.7%

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 2
Current: £1,122 GBP|Low: £562 GBP|High: £1,136 GBP|Avg: £752 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 3£599 GBP
Retailer 4£609 GBP
Retailer 2£713 GBP
Retailer 5£731 GBP
MOH London£1,122 GBP

42 data points across 5 retailers

5 retailers£599 GBP to £1,122 GBP

B+
Cheapest Retailer
-
£599 GBP
B+
Retailer 2
-
£609 GBP
View
B
Retailer 3
-
£713 GBP
€910 EUR
View
Retailer 4
-
£731 GBP
A$1,507 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
D31B84EE1 · Nov 1
£1,122 GBP
View
4 more retailers have this diamond
Prices start from £599 GBPSave up to £523 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 Cushion
£599 GBP