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Round|Lab Grown|IGI

1.50ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG774639549

Shape and cutting style on the report: Round brilliant

Certificate IGI LG774639549

Diamond specifications and retailer prices

From £419 GBP
A$858 AUD
As of October 29, 2026
Save £204 GBP (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £623 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG774639549 or 774639549. Listed at 2 retailers as of October 29, 2026, with prices from £419 to £623, a £204 spread on the same certified stone. Brilliant Earth lists it at £623. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG774639549
Dimensions7.41 × 7.35 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.41 mm7.35 mm1.50 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG774639549
Side View
Table 58.0%Crown 33.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: £623 GBP|Low: £218 GBP|High: £1,021 GBP|Avg: £505 GBP|-39.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
September 9, 2026
Retailer 6£238 GBP
Retailer 8£307 GBP
Retailer 5£327 GBP
Retailer 9£333 GBP
Retailer 2£419 GBP
Retailer 11£431 GBP
Retailer 4£451 GBP
Retailer 3£459 GBP
Retailer 7£621 GBP
Brilliant Earth£623 GBP
Retailer 10£786 GBP

55 data points across 11 retailers

2 retailers£419 GBP to £623 GBP

B+
Cheapest Retailer
-
£419 GBP
A$858 AUD
Most Expensive
B
Brilliant Earth
18474969Y · Oct 29
£623 GBP
$830 USD
View
1 more retailer has this diamond
Prices start from £419 GBPSave up to £204 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.

B+
1.50ct Round
£419 GBP