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Oval|Lab Grown|IGI

1.50ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG750578537

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG750578537

Diamond specifications and retailer prices

From £166 GBP
$223 USD
As of October 29, 2026
Save £699 GBP (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £866 GBP at Brilliant Earth · As of October 29, 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 top-tier cut grade and certified by IGI LG750578537 or 750578537. Listed at 15 retailers as of October 29, 2026, with prices from £166 to £866, a £699 spread on the same certified stone. Brilliant Earth lists it at £866. 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

1.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle43.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750578537
Dimensions8.91 × 6.45 × 4.18 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizeNone
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
8.91 mm6.45 mm1.50 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750578537
Side View
Table 59.0%Crown 32.7°Girdle: STK-THKPavilion 43.2°Culet: NoneDepth 64.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £866 GBP|Low: £157 GBP|High: £866 GBP|Avg: £416 GBP
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
October 31, 2026
Retailer 15£166 GBP
Retailer 8£193 GBP
Retailer 5£201 GBP
Retailer 6£201 GBP
Retailer 13£220 GBP
Retailer 4£329 GBP
Retailer 12£353 GBP
Retailer 10£369 GBP
Retailer 14£385 GBP
Retailer 11£452 GBP
Retailer 9£554 GBP
Retailer 2£664 GBP
Retailer 7£694 GBP
Retailer 3£805 GBP
Brilliant Earth£866 GBP

45 data points across 15 retailers

15 retailers£166 GBP to £866 GBP

A
Cheapest Retailer
-
£166 GBP
$223 USD
A
Retailer 2
-
£193 GBP
$259 USD
View
A
Retailer 3
-
£201 GBP
$269 USD
View
A
Retailer 4
-
£201 GBP
$269 USD
View
A
Retailer 5
-
£220 GBP
$295 USD
View
Final sale: no returns
A
Retailer 6
-
£329 GBP
€420 EUR
View
A
Retailer 7
-
£353 GBP
$473 USD
View
A
Retailer 8
-
£369 GBP
$495 USD
View
B+
Retailer 9
-
£385 GBP
View
B+
Retailer 10
-
£452 GBP
$605 USD
View
B
Retailer 11
-
£554 GBP
$742 USD
View
B
Retailer 12
-
£664 GBP
$890 USD
View
Retailer 13
-
£694 GBP
$930 USD
View
Price last confirmed 9 days ago
B
Retailer 14
-
£805 GBP
View
Most Expensive
B
Brilliant Earth
18445931A · Oct 29
£866 GBP
$1,160 USD
View
14 more retailers have this diamond
Prices start from £166 GBPSave up to £699 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
£166 GBP