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Round|Lab Grown|IGI

1.50ct I SI2 Round Lab Grown Diamond

VG • I/SI2 • IGI LG451055592

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055592

Diamond specifications and retailer prices

From $850 USD
As of October 31, 2026
Save $3,726 USD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,576 USD at MOH London · As of November 1, 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 very-good cut grade and certified by IGI LG451055592 or 451055592. Listed at 11 retailers as of October 31, 2026, with prices from $850 to $4,576, a $3,726 spread on the same certified stone. MOH London lists it at $4,576. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
I
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.2°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055592
Dimensions7.19 × 7.27 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.19 mm7.27 mm1.50 ctI / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451055592
Side View
Table 56.5%Crown 36.2°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 64.1%

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 31
Current: $4,576 USD|Low: $850 USD|High: $4,637 USD|Avg: $2,073 USD
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
November 1, 2026
Retailer 6$850 USD
Retailer 7$1,228 USD
Retailer 10$1,336 USD
Retailer 12$1,375 USD
Retailer 8$1,424 USD
Retailer 13$1,424 USD
Retailer 2$1,779 USD
Retailer 3$2,008 USD
Retailer 9$2,257 USD
Retailer 11$2,669 USD
Retailer 4$2,728 USD
Retailer 5$3,188 USD
MOH London$4,576 USD

43 data points across 13 retailers

11 retailers$850 USD to $4,576 USD

A
Cheapest Retailer
-
$850 USD
B+
Retailer 2
-
$1,228 USD
View
B+
Retailer 3
-
$1,336 USD
View
B+
Retailer 4
-
$1,375 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,424 USD
View
Retailer 6
-
$1,424 USD
View
Price last confirmed 20 days ago
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
C
MOH London
LG451055592 · Nov 1
$4,576 USD
£3,603 GBP
View
10 more retailers have this diamond
Prices start from $850 USDSave up to $3,726 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
$850 USD