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Round|Lab Grown|IGI

1.50ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG492122419

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492122419

Diamond specifications and retailer prices

From $840 USD
As of October 31, 2026
Save $3,760 USD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,600 USD at MOH London · As of October 29, 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 LG492122419 or 492122419. Listed at 11 retailers as of October 29, 2026, with prices from $840 to $4,600, a $3,760 spread on the same certified stone. MOH London lists it at $4,600. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492122419
Dimensions7.31 × 7.27 × 4.54 mm
L/W Ratio1.01
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
7.31 mm7.27 mm1.50 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492122419
Side View
Table 57.0%Crown 35.8°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 62.2%

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: $4,600 USD|Low: $840 USD|High: $4,637 USD|Avg: $2,168 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 3$840 USD
Retailer 4$1,228 USD
Retailer 7$1,374 USD
Retailer 5$1,424 USD
Retailer 2$1,779 USD
Retailer 8$2,008 USD
Retailer 6$2,257 USD
Retailer 9$2,728 USD
Retailer 10$3,188 USD
MOH London$4,600 USD

44 data points across 10 retailers

11 retailers$840 USD to $4,600 USD

A
Cheapest Retailer
-
$840 USD
B+
Retailer 2
-
$1,228 USD
View
B+
Retailer 3
-
$1,336 USD
View
B+
Retailer 4
-
$1,374 USD
View
Final sale: no returns
Retailer 5
-
$1,424 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$1,424 USD
View
B+
Retailer 7
-
$1,779 USD
£1,401 GBP
View
B
Retailer 8
-
$2,257 USD
View
B
Retailer 9
-
$2,669 USD
View
B
Retailer 10
-
$2,728 USD
View
Most Expensive
B
MOH London
LG492122419 · Oct 29
$4,600 USD
£3,622 GBP
View
10 more retailers have this diamond
Prices start from $840 USDSave up to $3,760 USD

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
$840 USD