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Round|Lab Grown|IGI

1.51ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG778671695

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778671695

Diamond specifications and retailer prices

From $204 USD
As of October 29, 2026
Save $886 USD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,090 USD at MOH London · As of October 26, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778671695 or 778671695. Listed at 11 retailers as of October 26, 2026, with prices from $204 to $1,090, a $886 spread on the same certified stone. MOH London lists it at $1,090. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778671695
Dimensions7.38 × 7.34 × 4.54 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.38 mm7.34 mm1.51 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778671695
Side View
Table 58.0%Crown 34.9°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.7%

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: Oct 29
Current: $1,090 USD|Low: $188 USD|High: $1,140 USD|Avg: $521 USD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 2$204 USD
Retailer 6$218 USD
Retailer 3$233 USD
Retailer 7$408 USD
Retailer 4$419 USD
Retailer 5$427 USD
Retailer 10$491 USD
Retailer 9$503 USD
Retailer 11$748 USD
Retailer 8$750 USD
MOH London$1,090 USD

40 data points across 11 retailers

11 retailers$204 USD to $1,090 USD

A
Cheapest Retailer
-
$204 USD
A
Retailer 2
-
$218 USD
View
A
Retailer 3
-
$233 USD
View
B+
Retailer 4
-
$408 USD
View
A
Retailer 5
-
$419 USD
£330 GBP
View
A
Retailer 6
-
$427 USD
€407 EUR
View
B+
Retailer 7
-
$491 USD
View
A
Retailer 8
-
$503 USD
View
B
Retailer 9
-
$748 USD
View
B
Retailer 10
-
$750 USD
View
Most Expensive
B
MOH London
LG778671695 · Oct 26
$1,090 USD
£858 GBP
View
10 more retailers have this diamond
Prices start from $204 USDSave up to $886 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
$204 USD