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Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG794609571

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794609571

Diamond specifications and retailer prices

From $193 USD
As of November 5, 2026
Save $925 USD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,118 USD at MOH London · As of November 5, 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 LG794609571 or 794609571. Listed at 17 retailers as of November 5, 2026, with prices from $193 to $1,118, a $925 spread on the same certified stone. MOH London lists it at $1,118. 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 angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794609571
Dimensions7.49 × 7.46 × 4.39 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
7.49 mm7.46 mm1.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794609571
Side View
Table 63.0%Crown 34°Girdle: MediumPavilion 40.6°Culet: NoneDepth 58.8%

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 5
Current: $1,118 USD|Low: $193 USD|High: $1,147 USD|Avg: $521 USD|-2.5%
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 7$193 USD
Retailer 3$216 USD
Retailer 16$224 USD
Retailer 12$240 USD
Retailer 8$241 USD
Retailer 4$419 USD
Retailer 14$424 USD
Retailer 10$431 USD
Retailer 2$437 USD
Retailer 15$572 USD
Retailer 9$636 USD
Retailer 11$710 USD
Retailer 13$771 USD
Retailer 5$779 USD
Retailer 6$824 USD
MOH London$1,118 USD

30 data points across 16 retailers

17 retailers$193 USD to $1,118 USD

A
Cheapest Retailer
-
$193 USD
A
Retailer 2
-
$216 USD
View
Final sale: no returns
A
Retailer 3
-
$224 USD
View
A
Retailer 4
-
$240 USD
View
Retailer 5
-
$241 USD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$419 USD
View
A
Retailer 7
-
$424 USD
View
A
Retailer 8
-
$431 USD
View
A
Retailer 9
-
$437 USD
View
B+
Retailer 10
-
$572 USD
View
B+
Retailer 11
-
$636 USD
View
B+
Retailer 12
-
$710 USD
View
B
Retailer 13
-
$771 USD
View
B
Retailer 14
-
$779 USD
View
B+
Retailer 15
-
$824 USD
View
B
Retailer 16
-
$880 USD
View
Most Expensive
B
MOH London
LG794609571 · Nov 5
$1,118 USD
£880 GBP
View
16 more retailers have this diamond
Prices start from $193 USDSave up to $925 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
$193 USD