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Round|Lab Grown|IGI

1.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG845657746

Shape and cutting style on the report: Round brilliant

Certificate IGI LG845657746

Diamond specifications and retailer prices

From $194 USD
As of November 5, 2026
Save $908 USD (82%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,102 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 LG845657746 or 845657746. Listed at 17 retailers as of November 5, 2026, with prices from $194 to $1,102, a $908 spread on the same certified stone. MOH London lists it at $1,102. 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 angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845657746
Dimensions7.29 × 7.41 × 4.56 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizeNone
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.29 mm7.41 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845657746
Side View
Table 57.0%Crown 35.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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 5
Current: $1,102 USD|Low: $190 USD|High: $1,106 USD|Avg: $501 USD|-0.3%
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
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 13$194 USD
Retailer 3$213 USD
Retailer 5$221 USD
Retailer 7$235 USD
Retailer 10$241 USD
Retailer 6$406 USD
Retailer 11$413 USD
Retailer 2$419 USD
Retailer 17$420 USD
Retailer 14$424 USD
Retailer 8$494 USD
Retailer 16$577 USD
Retailer 15$720 USD
Retailer 12$774 USD
Retailer 4$813 USD
Retailer 9$870 USD
MOH London$1,102 USD

18 data points across 17 retailers

17 retailers$194 USD to $1,102 USD

A
Cheapest Retailer
-
$194 USD
A
Retailer 2
-
$213 USD
View
Final sale: no returns
A
Retailer 3
-
$221 USD
View
Retailer 4
-
$235 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$241 USD
View
A
Retailer 6
-
$406 USD
View
A
Retailer 7
-
$413 USD
View
B+
Retailer 8
-
$419 USD
View
A
Retailer 9
-
$420 USD
View
A
Retailer 10
-
$424 USD
View
A
Retailer 11
-
$494 USD
View
B+
Retailer 12
-
$577 USD
View
B+
Retailer 13
-
$720 USD
View
B+
Retailer 14
-
$774 USD
View
B+
Retailer 15
-
$813 USD
View
B
Retailer 16
-
$870 USD
View
Most Expensive
B
MOH London
LG845657746 · Nov 5
$1,102 USD
£868 GBP
View
16 more retailers have this diamond
Prices start from $194 USDSave up to $908 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
$194 USD