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1.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG621492010

Shape and cutting style on the report: Round brilliant

Certificate IGI LG621492010

Diamond specifications and retailer prices

From $245 USD
As of November 3, 2026
Save $804 USD (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,049 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG621492010 or 621492010. Listed at 11 retailers as of November 3, 2026, with prices from $245 to $1,049, a $804 spread on the same certified stone. MOH London lists it at $1,049. 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
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621492010
Dimensions7.36 × 7.32 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.36 mm7.32 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621492010
Side View
Table 58.0%Crown 35.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.7%

Caratlytics Score

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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 3
Current: $1,049 USD|Low: $212 USD|High: $1,071 USD|Avg: $553 USD|-2.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 3$227 USD
Retailer 7$245 USD
Retailer 5$407 USD
Retailer 9$428 USD
Retailer 11$451 USD
Retailer 10$454 USD
Retailer 2$478 USD
Retailer 12$592 USD
Retailer 8$846 USD
Retailer 4$870 USD
Retailer 6$922 USD
MOH London$1,049 USD

37 data points across 12 retailers

11 retailers$245 USD to $1,049 USD

Retailer 1
-
$227 USD
Price last confirmed 29 days ago
A
Retailer 2
-
$245 USD
View
A
Retailer 3
-
$407 USD
View
A
Retailer 4
-
$428 USD
View
B+
Retailer 5
-
$451 USD
View
B+
Retailer 6
-
$478 USD
View
B+
Retailer 7
-
$592 USD
View
B
Retailer 8
-
$846 USD
View
B
Retailer 9
-
$870 USD
View
B
Retailer 10
-
$922 USD
View
Most Expensive
B
MOH London
LG621492010 · Nov 5
$1,049 USD
£826 GBP
View
10 more retailers have this diamond
Prices start from $245 USDSave up to $804 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
$245 USD