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Radiant|Lab Grown|IGI

1.50ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG536294462

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG536294462

Diamond specifications and retailer prices

From $807 USD
£636 GBP
As of October 31, 2026
2 retailers carry this diamond
Most expensive: $999 USD at Rare Carat · As of September 20, 2026
View at Rare Carat

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG536294462 or 536294462. Listed at 2 retailers as of October 31, 2026. 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
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.9°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG536294462
Dimensions7.38 × 5.90 × 3.91 mm
L/W Ratio1.25
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
7.38 mm5.90 mm1.50 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG536294462
Side View
Table 64.0%Crown 43.9°Girdle: Slightly ThickPavilion 34.9°Culet: NoneDepth 66.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $999 USD|Low: $137 USD|High: $1,640 USD|Avg: $575 USD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 25, 2026
Retailer 8$137 USD
Retailer 5$246 USD
Retailer 7$286 USD
Retailer 2$341 USD
Retailer 3$377 USD
Retailer 9$381 USD
Retailer 4$469 USD
Retailer 6$882 USD
Rare Carat$999 USD
Retailer 10$1,640 USD

2 data points across 10 retailers

2 retailers

B
Cheapest Retailer
-
$807 USD
£636 GBP
Most Expensive
Rare Carat
403602 · Sep 20
$999 USD
View
Price last confirmed 41 days ago
1 more retailer has this diamond
Prices start from $807 USD

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 Radiant
$807 USD