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Round|Lab Grown|IGI

1.50ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG478112356

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478112356

Diamond specifications and retailer prices

From €743 EUR
$830 USD
As of October 31, 2026
Save €2,953 EUR (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €3,696 EUR at MOH London · As of October 25, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478112356 or 478112356. Listed at 11 retailers as of October 25, 2026, with prices from €743 to €3,696, a €2,953 spread on the same certified stone. MOH London lists it at €3,696. 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
J
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478112356
Dimensions7.26 × 7.29 × 4.53 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.26 mm7.29 mm1.50 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478112356
Side View
Table 55.5%Crown 36.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.3%

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 31
Current: €3,696 EUR|Low: €743 EUR|High: €3,735 EUR|Avg: €1,626 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
Retailer 13
October 30, 2026
Retailer 2€743 EUR
Retailer 7€938 EUR
Retailer 11€1,020 EUR
Retailer 13€1,051 EUR
Retailer 8€1,088 EUR
Retailer 10€1,088 EUR
Retailer 6€1,266 EUR
Retailer 3€1,572 EUR
Retailer 9€1,736 EUR
Retailer 12€2,040 EUR
Retailer 4€2,274 EUR
Retailer 5€2,434 EUR
MOH London€3,696 EUR

39 data points across 13 retailers

11 retailers€743 EUR to €3,696 EUR

A
Cheapest Retailer
-
€743 EUR
$830 USD
B+
Retailer 2
-
€938 EUR
$1,048 USD
View
B+
Retailer 3
-
€1,020 EUR
$1,140 USD
View
B+
Retailer 4
-
€1,051 EUR
$1,174 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,088 EUR
$1,216 USD
View
Retailer 6
-
€1,088 EUR
$1,216 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
€1,266 EUR
£1,114 GBP
View
B
Retailer 8
-
€1,736 EUR
$1,939 USD
View
B
Retailer 9
-
€2,040 EUR
$2,279 USD
View
B
Retailer 10
-
€2,274 EUR
$2,541 USD
View
Most Expensive
B
MOH London
LG478112356 · Oct 25
€3,696 EUR
£3,251 GBP
View
10 more retailers have this diamond
Prices start from €743 EURSave up to €2,953 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