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Round|Lab Grown|IGI

1.50ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG451057002

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057002

Diamond specifications and retailer prices

From $1,794 USD
As of November 5, 2026
Save $2,107 USD (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,928 USD at MOH London · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057002 or 451057002. Listed at 8 retailers as of November 5, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057002
Dimensions7.48 × 7.46 × 4.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
7.48 mm7.46 mm1.50 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057002
Side View
Table 60.0%Crown 32.1°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 58.9%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $5,928 USD|Low: $1,722 USD|High: $6,024 USD|Avg: $3,237 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$1,794 USD
Retailer 4$2,081 USD
Retailer 6$2,081 USD
Retailer 8$2,102 USD
Retailer 7$2,760 USD
Retailer 5$3,264 USD
Retailer 2$3,501 USD
Retailer 9$4,657 USD
MOH London$5,928 USD

16 data points across 9 retailers

8 retailers$1,794 USD to $3,901 USD

B+
Cheapest Retailer
-
$1,794 USD
B
Retailer 2
-
$1,952 USD
View
Retailer 3
-
$2,081 USD
View
Price last confirmed 25 days ago
B
Retailer 4
-
$2,081 USD
View
B
Retailer 5
-
$3,264 USD
View
C
Retailer 6
-
$3,501 USD
View
C
Retailer 7
-
$3,901 USD
View
Most Expensive
MOH London
LG451057002 · Nov 5
$5,928 USD
£4,668 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $1,794 USDSave up to $2,107 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
$1,794 USD