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Oval|Lab Grown|IGI

1.50ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG494186030

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG494186030

Diamond specifications and retailer prices

From £199 GBP
$266 USD
As of October 30, 2026
Save £667 GBP (77%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £866 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.5ct lab-grown oval diamond

This 1.5ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG494186030 or 494186030. Listed at 23 retailers as of October 30, 2026, with prices from £199 to £866, a £667 spread on the same certified stone. Brilliant Earth lists it at £866. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494186030
Dimensions9.48 × 6.44 × 3.91 mm
L/W Ratio1.47
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
9.48 mm6.44 mm1.50 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG494186030
Side View
Table 66.5%Crown 36.2°Girdle: MED-THKPavilion 40°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £866 GBP|Low: £137 GBP|High: £1,440 GBP|Avg: £516 GBP|-39.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 10£199 GBP
Retailer 12£212 GBP
Retailer 9£302 GBP
Retailer 6£360 GBP
Retailer 4£372 GBP
Retailer 2£401 GBP
Retailer 11£402 GBP
Retailer 3£468 GBP
Retailer 8£692 GBP
Retailer 7£694 GBP
Retailer 5£861 GBP
Brilliant Earth£866 GBP

43 data points across 12 retailers

23 retailers£199 GBP to £866 GBP

Retailer 1
-
£173 GBP
$232 USD
Price last confirmed 32 days ago
A
Retailer 2
-
£199 GBP
$266 USD
View
Final sale: no returns
Retailer 3
-
£201 GBP
$269 USD
View
Price last confirmed 17 days ago
Retailer 4
-
£201 GBP
$269 USD
View
Price last confirmed 36 days ago
Retailer 5
-
£212 GBP
$284 USD
View
Price last confirmed 31 days ago
B+
Retailer 6
-
£214 GBP
$287 USD
View
Retailer 7
-
£214 GBP
$287 USD
View
Price last confirmed 21 days ago
Retailer 8
-
£214 GBP
$287 USD
View
Price last confirmed 28 days ago
B+
Retailer 9
-
£248 GBP
HK$2,600 HKD
View
B
Retailer 10
-
£302 GBP
$405 USD
View
B+
Retailer 11
-
£360 GBP
€459 EUR
View
B+
Retailer 12
-
£372 GBP
$498 USD
View
B+
Retailer 13
-
£401 GBP
View
B+
Retailer 14
-
£402 GBP
$539 USD
View
B+
Retailer 15
-
£468 GBP
$627 USD
View
Retailer 16
-
£689 GBP
$923 USD
View
Price last confirmed 21 days ago
Retailer 17
-
£689 GBP
$923 USD
View
Price last confirmed 30 days ago
B
Retailer 18
-
£692 GBP
$927 USD
View
Retailer 19
-
£694 GBP
$930 USD
View
Price last confirmed 9 days ago
B
Retailer 20
-
£728 GBP
$976 USD
View
B
Retailer 21
-
£729 GBP
SGD 1,320 SGD
View
B
Retailer 22
-
£861 GBP
View
Most Expensive
B
Brilliant Earth
4998383A · Oct 30
£866 GBP
$1,160 USD
View
22 more retailers have this diamond
Prices start from £199 GBPSave up to £667 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
1.50ct Oval
£199 GBP