Round|Lab Grown|IGI

1.51ct E SI1 Round Lab Grown Diamond

VG • E/SI1 • IGI LG12201310

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12201310

Diamond specifications and retailer prices

From $334 USD
As of November 5, 2026
Save $1,450 USD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,784 USD at MOH London · As of November 3, 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG12201310 or 12201310. Listed at 18 retailers as of November 3, 2026, with prices from $334 to $1,784, a $1,450 spread on the same certified stone. MOH London lists it at $1,784. 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

1.51
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12201310
Dimensions7.17 × 7.20 × 4.65 mm
L/W Ratio1.00
Culet sizeNone
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.
Top View
7.17 mm7.20 mm1.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12201310
Side View
Table 57.5%Crown 36.5°Girdle: STK-UNDPavilion 41.3°Culet: NoneDepth 64.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $1,784 USD|Low: $334 USD|High: $1,791 USD|Avg: $882 USD|-0.4%
MOH London
Retailer 2
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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
Retailer 17
Retailer 18
November 6, 2026
Retailer 3$334 USD
Retailer 4$357 USD
Retailer 16$387 USD
Retailer 7$414 USD
Retailer 15$414 USD
Retailer 14$422 USD
Retailer 8$565 USD
Retailer 12$657 USD
Retailer 17$745 USD
Retailer 11$782 USD
Retailer 2$813 USD
Retailer 10$838 USD
Retailer 18$1,213 USD
Retailer 9$1,305 USD
Retailer 13$1,460 USD
Retailer 6$1,468 USD
Retailer 5$1,624 USD
MOH London$1,784 USD

21 data points across 18 retailers

18 retailers$334 USD to $1,784 USD

A
Cheapest Retailer
-
$334 USD
A
Retailer 2
-
$357 USD
View
A
Retailer 3
-
$387 USD
View
Retailer 4
-
$414 USD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$414 USD
View
B+
Retailer 6
-
$422 USD
View
B+
Retailer 7
-
$565 USD
View
B+
Retailer 8
-
$657 USD
View
B
Retailer 9
-
$745 USD
View
B+
Retailer 10
-
$782 USD
View
B
Retailer 11
-
$813 USD
View
B
Retailer 12
-
$838 USD
View
B
Retailer 13
-
$1,213 USD
View
B
Retailer 14
-
$1,305 USD
View
B
Retailer 15
-
$1,460 USD
View
B
Retailer 16
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$1,468 USD
View
B
Retailer 17
-
$1,624 USD
View
Most Expensive
B
MOH London
LG12201310 · Nov 3
$1,784 USD
£1,405 GBP
View
17 more retailers have this diamond
Prices start from $334 USDSave up to $1,450 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
$334 USD