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Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG794609666

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794609666

Diamond specifications and retailer prices

From $518 USD
As of November 6, 2026
10 retailers carry this diamond
Most expensive: $1,154 USD at MOH London · As of October 4, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794609666 or 794609666. Listed at 10 retailers as of November 6, 2026. 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

1.51
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794609666
Dimensions7.48 × 7.45 × 4.43 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
7.48 mm7.45 mm1.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794609666
Side View
Table 59.0%Crown 32.6°Girdle: MediumPavilion 40.6°Culet: NoneDepth 59.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $1,154 USD|Low: $187 USD|High: $1,154 USD|Avg: $527 USD|+1.3%
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
Retailer 14
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Retailer 18
November 1, 2026
Retailer 18$189 USD
Retailer 3$220 USD
Retailer 13$228 USD
Retailer 6$244 USD
Retailer 16$244 USD
Retailer 17$424 USD
Retailer 10$425 USD
Retailer 12$428 USD
Retailer 11$453 USD
Retailer 2$518 USD
Retailer 14$575 USD
Retailer 8$576 USD
Retailer 4$775 USD
Retailer 7$784 USD
Retailer 5$796 USD
Retailer 9$837 USD
Retailer 15$880 USD
MOH London$1,154 USD

22 data points across 18 retailers

10 retailers

Retailer 1
-
$189 USD
Price last confirmed 30 days ago
Retailer 2
-
$228 USD
View
Price last confirmed 32 days ago
Retailer 3
-
$244 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$244 USD
View
Price last confirmed 30 days ago
A
Retailer 5
-
$518 USD
View
Retailer 6
-
$775 USD
View
Price last confirmed 31 days ago
Retailer 7
-
$784 USD
View
Price last confirmed 31 days ago
Retailer 8
-
$796 USD
View
Price last confirmed 30 days ago
Retailer 9
-
$880 USD
View
Price last confirmed 30 days ago
Most Expensive
MOH London
LG794609666 · Oct 4
$1,154 USD
£909 GBP
View
Price last confirmed 33 days ago
9 more retailers have this diamond
Prices start from $518 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
1.51ct Round
$518 USD