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Round|Lab Grown|IGI

1.50ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG771601890

Shape and cutting style on the report: Round brilliant

Certificate IGI LG771601890

Diamond specifications and retailer prices

From $220 USD
As of November 1, 2026
Save $858 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,078 USD at MOH London · As of October 26, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG771601890 or 771601890. Listed at 11 retailers as of October 26, 2026, with prices from $220 to $1,078, a $858 spread on the same certified stone. MOH London lists it at $1,078. 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
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771601890
Dimensions7.40 × 7.37 × 4.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.40 mm7.37 mm1.50 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771601890
Side View
Table 60.0%Crown 32.3°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.2%

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: Nov 1
Current: $1,078 USD|Low: $220 USD|High: $1,125 USD|Avg: $635 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 11$220 USD
Retailer 5$349 USD
Retailer 9$424 USD
Retailer 7$481 USD
Retailer 2$497 USD
Retailer 8$575 USD
Retailer 6$695 USD
Retailer 10$785 USD
Retailer 4$864 USD
Retailer 3$1,036 USD
MOH London$1,078 USD

19 data points across 11 retailers

11 retailers$220 USD to $1,078 USD

A
Cheapest Retailer
-
$220 USD
Final sale: no returns
A
Retailer 2
-
$349 USD
View
B+
Retailer 3
-
$424 USD
View
Retailer 4
-
$481 USD
£379 GBP
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$497 USD
£392 GBP
View
B+
Retailer 6
-
$575 USD
View
B+
Retailer 7
-
$695 USD
View
B+
Retailer 8
-
$785 USD
View
B
Retailer 9
-
$864 USD
View
B
Retailer 10
-
$1,036 USD
View
Most Expensive
B
MOH London
LG771601890 · Oct 26
$1,078 USD
£849 GBP
View
10 more retailers have this diamond
Prices start from $220 USDSave up to $858 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
$220 USD