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Round|Lab Grown|IGI

1.50ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG520297333

Shape and cutting style on the report: Round brilliant

Certificate IGI LG520297333

Diamond specifications and retailer prices

From £243 GBP
$325 USD
As of October 29, 2026
Save £1,914 GBP (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,157 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG520297333 or 520297333. Listed at 18 retailers as of October 29, 2026, with prices from £243 to £2,157, a £1,914 spread on the same certified stone. Do Amore Diamonds lists it at £2,157. 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 angle33°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520297333
Dimensions7.39 × 7.49 × 4.44 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.39 mm7.49 mm1.50 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520297333
Side View
Table 62.5%Crown 33°Girdle: MediumPavilion 41.4°Culet: NoneDepth 59.7%

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 29
Current: £2,157 GBP|Low: £243 GBP|High: £2,157 GBP|Avg: £703 GBP|+0.3%
Do Amore Diamonds
Retailer 2
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Retailer 18
October 30, 2026
Retailer 17£243 GBP
Retailer 14£281 GBP
Retailer 2£299 GBP
Retailer 4£301 GBP
Retailer 12£301 GBP
Retailer 18£344 GBP
Retailer 6£414 GBP
Retailer 7£496 GBP
Retailer 9£517 GBP
Retailer 11£538 GBP
Retailer 15£549 GBP
Retailer 10£599 GBP
Retailer 16£883 GBP
Retailer 8£905 GBP
Retailer 5£1,068 GBP
Retailer 3£1,185 GBP
Retailer 13£1,299 GBP
Do Amore Diamonds£2,157 GBP

14 data points across 18 retailers

18 retailers£243 GBP to £2,157 GBP

A
Cheapest Retailer
-
£243 GBP
$325 USD
A
Retailer 2
-
£281 GBP
$377 USD
View
B+
Retailer 3
-
£299 GBP
$400 USD
View
A
Retailer 4
-
£301 GBP
$403 USD
View
A
Retailer 5
-
£301 GBP
$403 USD
View
A
Retailer 6
-
£344 GBP
$461 USD
View
A
Retailer 7
-
£414 GBP
$555 USD
View
Retailer 8
-
£496 GBP
$665 USD
View
Price last confirmed 10 days ago
A
Retailer 9
-
£517 GBP
$693 USD
View
A
Retailer 10
-
£538 GBP
View
A
Retailer 11
-
£549 GBP
$735 USD
View
A
Retailer 12
-
£599 GBP
$803 USD
View
A
Retailer 13
-
£883 GBP
$1,183 USD
View
A
Retailer 14
-
£905 GBP
$1,212 USD
View
B+
Retailer 15
-
£1,068 GBP
$1,431 USD
View
B+
Retailer 16
-
£1,185 GBP
$1,588 USD
View
B+
Retailer 17
-
£1,299 GBP
View
Most Expensive
B
Do Amore Diamonds
27-464651565 · Oct 31
£2,157 GBP
$2,890 USD
View
17 more retailers have this diamond
Prices start from £243 GBPSave up to £1,914 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
£243 GBP