Round|Natural|GIA

0.42ct E SI2 Round Natural Diamond

EX • E/SI2

Diamond specifications and retailer prices

From £198 GBP
₹25,087 INR
As of October 29, 2026
Save £913 GBP (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,141 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 0.42ct natural round diamond

This 0.42ct natural round sits in the sub-half-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 19 retailers as of October 27, 2026, with a 461% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions4.77 × 4.73 × 3.00 mm
L/W Ratio1.01
Top View
4.77 mm4.73 mm0.42 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.2%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: £1,053 GBP|Low: £198 GBP|High: £1,116 GBP|Avg: £441 GBP|-5.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 8£198 GBP
Retailer 5£240 GBP
Retailer 14£275 GBP
Retailer 15£291 GBP
Retailer 9£296 GBP
Retailer 12£306 GBP
Retailer 2£355 GBP
Retailer 3£369 GBP
Retailer 6£381 GBP
Retailer 7£384 GBP
Retailer 11£418 GBP
Retailer 13£451 GBP
Retailer 10£568 GBP
Retailer 4£654 GBP
NZ Jewellers£1,053 GBP

21 data points across 15 retailers

19 retailers£198 GBP to £1,110 GBP

A
Cheapest Retailer
-
£198 GBP
₹25,087 INR
A
Retailer 2
-
£240 GBP
HK$2,500 HKD
View
A
Retailer 3
-
£275 GBP
$366 USD
View
A
Retailer 4
-
£291 GBP
SGD 524 SGD
View
A
Retailer 5
-
£296 GBP
$394 USD
View
A
Retailer 6
-
£297 GBP
$396 USD
View
Price last confirmed 31 days ago
A
Retailer 7
-
£306 GBP
$408 USD
View
A
Retailer 8
-
£343 GBP
$457 USD
View
Price last confirmed 31 days ago
A
Retailer 9
-
£355 GBP
View
A
Retailer 10
-
£369 GBP
$492 USD
View
A
Retailer 11
-
£381 GBP
$507 USD
View
A
Retailer 12
-
£384 GBP
$511 USD
View
A
Retailer 13
-
£418 GBP
$557 USD
View
A
Retailer 14
-
£451 GBP
€572 EUR
View
B+
Retailer 15
-
£568 GBP
View
B+
Retailer 16
-
£654 GBP
View
B
Retailer 17
-
£1,053 GBP
$1,402 USD
View
B
Retailer 18
-
£1,110 GBP
CA$2,054 CAD
View
Most Expensive
B
NZ Jewellers
66acc9f9-7d8c-49b1-ae4a-1d6a558c5f76 · Sep 28
£1,141 GBP
$1,520 USD
View
Price last confirmed 31 days ago
18 more retailers have this diamond
Prices start from £198 GBPSave up to £913 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 Round
£198 GBP