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Oval|Lab Grown|IGI

4.20ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG768631044

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG768631044

Diamond specifications and retailer prices

From £1,693 GBP
$2,268 USD
As of October 29, 2026
Save £9,958 GBP (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £11,975 GBP at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 4.2ct lab-grown oval diamond

This 4.2ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG768631044 or 768631044. Listed at 17 retailers as of October 29, 2026, with a 588% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.20
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768631044
Dimensions12.66 × 9.07 × 5.51 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
12.66 mm9.07 mm4.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768631044
Side View
Table 62.0%Crown 34.8°Girdle: ThickPavilion 39.2°Culet: NoneDepth 60.7%

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: £11,975 GBP|Low: £1,679 GBP|High: £15,382 GBP|Avg: £4,773 GBP|+1.6%
Novita Diamonds
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
Retailer 17
October 31, 2026
Retailer 15£1,693 GBP
Retailer 10£1,842 GBP
Retailer 12£2,008 GBP
Retailer 9£2,076 GBP
Retailer 16£2,086 GBP
Retailer 5£2,979 GBP
Retailer 11£3,010 GBP
Retailer 6£3,079 GBP
Retailer 14£3,181 GBP
Retailer 2£3,523 GBP
Retailer 8£4,724 GBP
Retailer 7£4,807 GBP
Retailer 4£5,377 GBP
Retailer 17£5,835 GBP
Retailer 13£8,463 GBP
Retailer 3£11,650 GBP
Novita Diamonds£11,975 GBP

35 data points across 17 retailers

17 retailers£1,693 GBP to £11,650 GBP

A
Cheapest Retailer
-
£1,693 GBP
$2,268 USD
A
Retailer 2
-
£1,842 GBP
$2,468 USD
View
A
Retailer 3
-
£2,008 GBP
$2,691 USD
View
A
Retailer 4
-
£2,076 GBP
$2,782 USD
View
Final sale: no returns
A
Retailer 5
-
£2,086 GBP
$2,795 USD
View
A
Retailer 6
-
£2,979 GBP
$3,992 USD
View
A
Retailer 7
-
£3,010 GBP
$4,033 USD
View
A
Retailer 8
-
£3,079 GBP
$4,126 USD
View
A
Retailer 9
-
£3,181 GBP
$4,262 USD
View
A
Retailer 10
-
£3,523 GBP
€4,496 EUR
View
Retailer 11
-
£4,724 GBP
$6,330 USD
View
Price last confirmed 10 days ago
Retailer 12
-
£4,807 GBP
A$9,908 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£5,377 GBP
$7,205 USD
View
B+
Retailer 14
-
£5,835 GBP
View
B+
Retailer 15
-
£8,463 GBP
$11,340 USD
View
B
Retailer 16
-
£11,650 GBP
$15,610 USD
View
Most Expensive
Novita Diamonds
cert_768631044 · Oct 8
£11,975 GBP
A$24,684 AUD
View
Price last confirmed 23 days ago
16 more retailers have this diamond
Prices start from £1,693 GBPSave up to £9,958 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
4.20ct Oval
£1,693 GBP