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Marquise|Lab Grown|IGI

1.51ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG792670566

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG792670566

Diamond specifications and retailer prices

From $457 USD
As of November 1, 2026
Save $612 USD (57%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,069 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise 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 LG792670566 or 792670566. Listed at 6 retailers as of November 1, 2026, with prices from $457 to $1,069, a $612 spread on the same certified stone. MOH London lists it at $1,069. 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 angle34.5°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792670566
Dimensions10.97 × 6.05 × 3.76 mm
L/W Ratio1.81
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.97 mm6.05 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792670566
Side View
Table 58.0%Crown 34.5°Girdle: ThickPavilion 38.7°Culet: NoneDepth 62.1%

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 1
Current: $1,069 USD|Low: $432 USD|High: $1,082 USD|Avg: $622 USD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4$457 USD
Retailer 6$460 USD
Retailer 3$463 USD
Retailer 2$494 USD
Retailer 5$521 USD
Retailer 7$910 USD
MOH London$1,069 USD

25 data points across 7 retailers

6 retailers$457 USD to $1,069 USD

A
Cheapest Retailer
-
$457 USD
A
Retailer 2
-
$460 USD
View
Retailer 3
-
$463 USD
€441 EUR
View
Price last confirmed 7 days ago
A
Retailer 4
-
$494 USD
£389 GBP
View
A
Retailer 5
-
$521 USD
View
Most Expensive
B
MOH London
LG792670566 · Nov 1
$1,069 USD
£842 GBP
View
5 more retailers have this diamond
Prices start from $457 USDSave up to $612 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 Marquise
$457 USD