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Oval|Lab Grown|IGI

4.22ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG578352134

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG578352134

Diamond specifications and retailer prices

From £372 GBP
$499 USD
As of October 29, 2026
Save £1,762 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,135 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.22ct lab-grown oval diamond

This 4.22ct lab-grown oval sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG578352134 or 578352134. Listed at 20 retailers as of October 29, 2026, with prices from £372 to £2,135, a £1,762 spread on the same certified stone. Brilliant Earth lists it at £2,135. 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

4.22
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578352134
Dimensions13.02 × 8.80 × 5.76 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
13.02 mm8.80 mm4.22 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578352134
Side View
Table 60.0%Crown 38°Girdle: MED-STKPavilion 41°Culet: NoneDepth 65.5%

Caratlytics Score

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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: £2,135 GBP|Low: £357 GBP|High: £4,187 GBP|Avg: £979 GBP|-49.0%
Brilliant Earth
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
Retailer 16
October 30, 2026
Retailer 16£372 GBP
Retailer 5£417 GBP
Retailer 7£417 GBP
Retailer 2£439 GBP
Retailer 3£462 GBP
Retailer 8£462 GBP
Retailer 12£567 GBP
Retailer 11£619 GBP
Retailer 13£673 GBP
Retailer 9£769 GBP
Retailer 6£772 GBP
Retailer 15£1,081 GBP
Retailer 4£1,216 GBP
Retailer 14£1,843 GBP
Retailer 10£1,939 GBP
Brilliant Earth£2,135 GBP

43 data points across 16 retailers

20 retailers£372 GBP to £2,135 GBP

A
Cheapest Retailer
-
£372 GBP
$499 USD
A
Retailer 2
-
£417 GBP
$559 USD
View
Final sale: no returns
A
Retailer 3
-
£417 GBP
$559 USD
View
A
Retailer 4
-
£439 GBP
View
Retailer 5
-
£462 GBP
$619 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£462 GBP
$619 USD
View
A
Retailer 7
-
£567 GBP
$760 USD
View
B+
Retailer 8
-
£619 GBP
$830 USD
View
A
Retailer 9
-
£673 GBP
€859 EUR
View
A
Retailer 10
-
£769 GBP
View
A
Retailer 11
-
£772 GBP
$1,035 USD
View
B+
Retailer 12
-
£1,025 GBP
$1,374 USD
View
B+
Retailer 13
-
£1,081 GBP
$1,449 USD
View
B+
Retailer 14
-
£1,096 GBP
$1,469 USD
View
B+
Retailer 15
-
£1,216 GBP
$1,629 USD
View
B
Retailer 16
-
£1,505 GBP
$2,017 USD
View
B
Retailer 17
-
£1,529 GBP
$2,049 USD
View
Retailer 18
-
£1,843 GBP
$2,470 USD
View
Price last confirmed 9 days ago
B
Retailer 19
-
£1,939 GBP
View
Most Expensive
B
Brilliant Earth
10790886A · Oct 30
£2,135 GBP
$2,860 USD
View
19 more retailers have this diamond
Prices start from £372 GBPSave up to £1,762 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
4.22ct Oval
£372 GBP