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Round|Lab Grown|IGI

1.50ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG783628093

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783628093

Diamond specifications and retailer prices

From £157 GBP
$211 USD
As of October 26, 2026
Save £628 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £786 GBP at MOH London · As of October 26, 2026
View at MOH London

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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG783628093 or 783628093. Listed at 13 retailers as of October 26, 2026, with prices from £157 to £786, a £628 spread on the same certified stone. MOH London lists it at £786. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783628093
Dimensions7.44 × 7.48 × 4.46 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
7.44 mm7.48 mm1.50 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783628093
Side View
Table 59.0%Crown 31.8°Girdle: MediumPavilion 41°Culet: NoneDepth 59.8%

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: Oct 26
Current: £786 GBP|Low: £157 GBP|High: £786 GBP|Avg: £399 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 7£157 GBP
Retailer 3£183 GBP
Retailer 4£196 GBP
Retailer 9£196 GBP
Retailer 5£246 GBP
Retailer 2£318 GBP
Retailer 11£418 GBP
Retailer 10£442 GBP
Retailer 6£508 GBP
Retailer 12£629 GBP
Retailer 8£631 GBP
Retailer 13£638 GBP
MOH London£786 GBP

9 data points across 13 retailers

13 retailers£157 GBP to £786 GBP

A
Cheapest Retailer
-
£157 GBP
$211 USD
A
Retailer 2
-
£183 GBP
$245 USD
View
A
Retailer 3
-
£196 GBP
$262 USD
View
A
Retailer 4
-
£196 GBP
$262 USD
View
B+
Retailer 5
-
£246 GBP
$330 USD
View
A
Retailer 6
-
£318 GBP
View
A
Retailer 7
-
£418 GBP
$560 USD
View
A
Retailer 8
-
£442 GBP
$592 USD
View
A
Retailer 9
-
£508 GBP
$680 USD
View
A
Retailer 10
-
£629 GBP
$843 USD
View
A
Retailer 11
-
£631 GBP
$846 USD
View
A
Retailer 12
-
£638 GBP
SGD 1,155 SGD
View
Most Expensive
B+
MOH London
LG783628093 · Oct 26
£786 GBP
View
12 more retailers have this diamond
Prices start from £157 GBPSave up to £628 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 Round
£157 GBP