Marquise|Lab Grown|IGI

1.57ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG849654844

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG849654844

Diamond specifications and retailer prices

From $280 USD
As of November 1, 2026
Save $1,204 USD (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,484 USD at Diamonds Direct · As of November 1, 2026
View at Diamonds Direct

About this 1.57ct lab-grown marquise diamond

This 1.57ct 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 LG849654844 or 849654844. Listed at 7 retailers as of November 1, 2026, with prices from $280 to $1,484, a $1,204 spread on the same certified stone. Diamonds Direct lists it at $1,484. 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

1.57
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.8°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG849654844
Dimensions12.12 × 6.26 × 3.74 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.12 mm6.26 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849654844
Side View
Table 57.0%Crown 30.8°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 59.7%

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: Nov 1
Current: $1,484 USD|Low: $280 USD|High: $1,484 USD|Avg: $877 USD
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2$280 USD
Retailer 5$311 USD
Retailer 3$605 USD
Retailer 4$652 USD
Retailer 7$1,007 USD
Retailer 6$1,104 USD
Diamonds Direct$1,484 USD

2 data points across 7 retailers

7 retailers$280 USD to $1,484 USD

A
Cheapest Retailer
-
$280 USD
Final sale: no returns
A
Retailer 2
-
$311 USD
View
B+
Retailer 3
-
$605 USD
£476 GBP
View
B+
Retailer 4
-
$652 USD
View
B
Retailer 5
-
$1,007 USD
View
B
Retailer 6
-
$1,104 USD
View
Most Expensive
B
Diamonds Direct
1154003 · Nov 1
$1,484 USD
View
6 more retailers have this diamond
Prices start from $280 USDSave up to $1,204 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
1.57ct Marquise
$280 USD