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Round|Natural|GIA

0.42ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1508586417

Certificate GIA 1508586417

Diamond specifications and retailer prices

From £341 GBP
₹43,305 INR
As of October 29, 2026
Save £1,114 GBP (77%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,455 GBP at NZ Jewellers · As of October 26, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1508586417. Listed at 22 retailers as of October 26, 2026, with prices from £341 to £1,455, a £1,114 spread on the same certified stone. NZ Jewellers lists it at £1,455. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1508586417
Dimensions4.80 × 4.82 × 2.96 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
4.80 mm4.82 mm0.42 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1508586417
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.6%

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: Oct 29
Current: £1,455 GBP|Low: £339 GBP|High: £1,455 GBP|Avg: £803 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 3£341 GBP
Retailer 8£499 GBP
Retailer 2£566 GBP
Retailer 4£621 GBP
Retailer 9£698 GBP
Retailer 6£718 GBP
Retailer 10£951 GBP
Retailer 7£1,074 GBP
Retailer 5£1,097 GBP
NZ Jewellers£1,455 GBP

31 data points across 10 retailers

22 retailers£341 GBP to £1,455 GBP

A
Cheapest Retailer
-
£341 GBP
₹43,305 INR
A
Retailer 2
-
£448 GBP
A$919 AUD
View
A
Retailer 3
-
£464 GBP
$618 USD
View
Price last confirmed 36 days ago
A
Retailer 4
-
£464 GBP
$618 USD
View
B+
Retailer 5
-
£483 GBP
SGD 870 SGD
View
B+
Retailer 6
-
£499 GBP
$665 USD
View
B+
Retailer 7
-
£500 GBP
$666 USD
View
B+
Retailer 8
-
£500 GBP
$666 USD
View
B+
Retailer 9
-
£535 GBP
$713 USD
View
Price last confirmed 36 days ago
B+
Retailer 10
-
£563 GBP
$750 USD
View
B+
Retailer 11
-
£566 GBP
View
B+
Retailer 12
-
£586 GBP
$781 USD
View
B+
Retailer 13
-
£621 GBP
€787 EUR
View
B+
Retailer 14
-
£641 GBP
$853 USD
View
B+
Retailer 15
-
£698 GBP
A$1,430 AUD
View
Price last confirmed 24 days ago
B+
Retailer 16
-
£718 GBP
ZAR 15,454 ZAR
View
B
Retailer 17
-
£840 GBP
View
B
Retailer 18
-
£951 GBP
View
Price last confirmed 29 days ago
B
Retailer 19
-
£1,074 GBP
View
B
Retailer 20
-
£1,097 GBP
View
B
Retailer 21
-
£1,455 GBP
$1,938 USD
View
Price last confirmed 35 days ago
Most Expensive
B
NZ Jewellers
3385e125-9547-4617-846b-5ea2a2056a89 · Oct 26
£1,455 GBP
$1,938 USD
View
21 more retailers have this diamond
Prices start from £341 GBPSave up to £1,114 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
£341 GBP