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Round|Lab Grown|IGI

1.50ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG499189131

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499189131

Diamond specifications and retailer prices

From €743 EUR
$830 USD
As of October 30, 2026
Save €3,359 EUR (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €4,101 EUR at MOH London · As of October 27, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499189131 or 499189131. Listed at 10 retailers as of October 27, 2026, with prices from €743 to €4,101, a €3,359 spread on the same certified stone. MOH London lists it at €4,101. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499189131
Dimensions7.29 × 7.24 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.29 mm7.24 mm1.50 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499189131
Side View
Table 56.5%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €4,101 EUR|Low: €743 EUR|High: €4,150 EUR|Avg: €1,875 EUR|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2€743 EUR
Retailer 5€1,099 EUR
Retailer 8€1,196 EUR
Retailer 10€1,230 EUR
Retailer 6€1,275 EUR
Retailer 3€1,380 EUR
Retailer 11€1,797 EUR
Retailer 7€2,020 EUR
Retailer 9€2,389 EUR
Retailer 12€2,442 EUR
Retailer 4€2,854 EUR
MOH London€4,101 EUR

16 data points across 12 retailers

10 retailers€743 EUR to €4,101 EUR

A
Cheapest Retailer
-
€743 EUR
$830 USD
B+
Retailer 2
-
€1,099 EUR
$1,228 USD
View
B+
Retailer 3
-
€1,196 EUR
$1,336 USD
View
B+
Retailer 4
-
€1,230 EUR
$1,374 USD
View
Final sale: no returns
Retailer 5
-
€1,275 EUR
$1,424 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,275 EUR
$1,424 USD
View
B
Retailer 7
-
€2,020 EUR
$2,257 USD
View
B
Retailer 8
-
€2,389 EUR
$2,669 USD
View
B
Retailer 9
-
€2,442 EUR
$2,728 USD
View
Most Expensive
B
MOH London
LG499189131 · Oct 27
€4,101 EUR
£3,608 GBP
View
9 more retailers have this diamond
Prices start from €743 EURSave up to €3,359 EUR

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
€743 EUR