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Radiant|Lab Grown|IGI

1.50ct H VS1 Radiant Lab Grown Diamond

VG • H/VS1 • IGI LG570375731

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

Certificate IGI LG570375731

Diamond specifications and retailer prices

From £135 GBP
As of November 4, 2026
Save £734 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £869 GBP at Flawless Fine Jewelry · As of November 4, 2026
View at Flawless Fine Jewelry

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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG570375731 or 570375731. Listed at 17 retailers as of November 4, 2026, with prices from £135 to £869, a £734 spread on the same certified stone. Flawless Fine Jewelry lists it at £869. 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
H
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570375731
Dimensions7.73 × 5.77 × 4.00 mm
L/W Ratio1.34
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.73 mm5.77 mm1.50 ctH / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570375731
Side View
Table 67.5%Crown 37.7°Girdle: THN-STKPavilion 34.9°Culet: NoneDepth 69.3%

Caratlytics Score

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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: Nov 4
Current: £869 GBP|Low: £104 GBP|High: £869 GBP|Avg: £330 GBP
Flawless Fine Jewelry
Retailer 2
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Retailer 12
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Retailer 16
November 5, 2026
Retailer 13£135 GBP
Retailer 7£156 GBP
Retailer 4£156 GBP
Retailer 5£167 GBP
Retailer 14£167 GBP
Retailer 8£190 GBP
Retailer 11£276 GBP
Retailer 10£288 GBP
Retailer 16£296 GBP
Retailer 3£354 GBP
Retailer 6£359 GBP
Retailer 9£389 GBP
Retailer 15£537 GBP
Retailer 12£567 GBP
Retailer 2£779 GBP
Flawless Fine Jewelry£869 GBP

31 data points across 16 retailers

17 retailers£135 GBP to £869 GBP

A
Cheapest Retailer
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£135 GBP
A
Retailer 2
-
£156 GBP
View
Final sale: no returns
A
Retailer 3
-
£156 GBP
View
Retailer 4
-
£167 GBP
View
Price last confirmed 11 days ago
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Retailer 5
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£167 GBP
View
A
Retailer 6
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£190 GBP
View
A
Retailer 7
-
£276 GBP
View
A
Retailer 8
-
£288 GBP
View
B+
Retailer 9
-
£296 GBP
View
B+
Retailer 10
-
£354 GBP
View
B+
Retailer 11
-
£359 GBP
View
A
Retailer 12
-
£389 GBP
View
B+
Retailer 13
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£468 GBP
View
B+
Retailer 14
-
£537 GBP
View
B+
Retailer 15
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£567 GBP
View
B
Retailer 16
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£779 GBP
View
Most Expensive
B
Flawless Fine Jewelry
1FB61E525 · Nov 4
£869 GBP
View
16 more retailers have this diamond
Prices start from £135 GBPSave up to £734 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 Radiant
£135 GBP