Radiant|Lab Grown|IGI

1.50ct I SI1 Radiant Lab Grown Diamond

ID • I/SI1 • IGI LG514266066

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

Certificate IGI LG514266066

Diamond specifications and retailer prices

From £634 GBP
$850 USD
As of October 30, 2026
Save £2,989 GBP (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,624 GBP at MOH London · As of October 29, 2026
View at MOH London

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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG514266066 or 514266066. Listed at 10 retailers as of October 29, 2026, with prices from £634 to £3,624, a £2,989 spread on the same certified stone. MOH London lists it at £3,624. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle29.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514266066
Dimensions7.93 × 5.62 × 3.64 mm
L/W Ratio1.41
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
7.93 mm5.62 mm1.50 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514266066
Side View
Table 69.0%Crown 38.5°Girdle: ThickPavilion 29.3°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
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: Oct 30
Current: £3,624 GBP|Low: £634 GBP|High: £3,653 GBP|Avg: £1,723 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2£634 GBP
Retailer 3£967 GBP
Retailer 4£1,122 GBP
Retailer 6£1,250 GBP
Retailer 8£1,546 GBP
Retailer 5£1,776 GBP
Retailer 7£2,091 GBP
MOH London£3,624 GBP

14 data points across 8 retailers

10 retailers£634 GBP to £3,624 GBP

A
Cheapest Retailer
-
£634 GBP
$850 USD
B+
Retailer 2
-
£967 GBP
$1,296 USD
View
B+
Retailer 3
-
£1,052 GBP
$1,410 USD
View
Retailer 4
-
£1,122 GBP
$1,503 USD
View
Price last confirmed 19 days ago
B+
Retailer 5
-
£1,122 GBP
$1,503 USD
View
B+
Retailer 6
-
£1,250 GBP
$1,675 USD
View
B
Retailer 7
-
£1,776 GBP
$2,379 USD
View
B
Retailer 8
-
£2,091 GBP
$2,802 USD
View
B
Retailer 9
-
£2,102 GBP
$2,817 USD
View
Most Expensive
B
MOH London
LG514266066 · Oct 29
£3,624 GBP
View
9 more retailers have this diamond
Prices start from £634 GBPSave up to £2,989 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
£634 GBP