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Round|Lab Grown|IGI

1.50ct H SI1 Round Lab Grown Diamond

GD • H/SI1 • IGI LG425067155

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425067155

Diamond specifications and retailer prices

From $1,300 USD
As of October 29, 2026
Save $3,995 USD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,295 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG425067155 or 425067155. Listed at 11 retailers as of October 29, 2026, with prices from $1,300 to $5,295, a $3,995 spread on the same certified stone. MOH London lists it at $5,295. 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
H
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067155
Dimensions7.36 × 7.30 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) process Type IIa
Top View
7.36 mm7.30 mm1.50 ctH / SI1
OriginLab Grown
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG425067155
Side View
Table 53.0%Crown 33.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $5,295 USD|Low: $1,300 USD|High: $5,338 USD|Avg: $2,425 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 4$1,300 USD
Retailer 3$1,590 USD
Retailer 7$1,779 USD
Retailer 5$1,844 USD
Retailer 10$1,925 USD
Retailer 8$2,015 USD
Retailer 9$2,478 USD
Retailer 6$2,902 USD
Retailer 2$3,261 USD
MOH London$5,295 USD

14 data points across 10 retailers

11 retailers$1,300 USD to $5,295 USD

B+
Cheapest Retailer
-
$1,300 USD
B
Retailer 2
-
$1,590 USD
View
B
Retailer 3
-
$1,730 USD
View
B
Retailer 4
-
$1,779 USD
View
Final sale: no returns
Retailer 5
-
$1,844 USD
View
Price last confirmed 18 days ago
B
Retailer 6
-
$1,844 USD
View
B
Retailer 7
-
$2,015 USD
View
C
Retailer 8
-
$2,902 USD
View
C
Retailer 9
-
$3,261 USD
View
C
Retailer 10
-
$3,457 USD
View
Most Expensive
C
MOH London
LG425067155 · Oct 29
$5,295 USD
£4,169 GBP
View
10 more retailers have this diamond
Prices start from $1,300 USDSave up to $3,995 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.

B+
1.50ct Round
$1,300 USD