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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 £186 GBP
As of November 4, 2026
Save £1,470 GBP (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,657 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

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 11 retailers as of November 4, 2026, with prices from £186 to £1,657, a £1,470 spread on the same certified stone. Do Amore Diamonds lists it at £1,657. 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
Colour
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 4
Current: £1,657 GBP|Low: £186 GBP|High: £1,657 GBP|Avg: £582 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£186 GBP
Retailer 8£208 GBP
Retailer 7£216 GBP
Retailer 10£231 GBP
Retailer 5£349 GBP
Retailer 2£444 GBP
Retailer 9£484 GBP
Retailer 3£748 GBP
Retailer 11£820 GBP
Retailer 4£883 GBP
Do Amore Diamonds£1,657 GBP

7 data points across 11 retailers

11 retailers£186 GBP to £1,657 GBP

A
Cheapest Retailer
-
£186 GBP
A
Retailer 2
-
£208 GBP
View
Final sale: no returns
A
Retailer 3
-
£216 GBP
View
A
Retailer 4
-
£231 GBP
View
A
Retailer 5
-
£349 GBP
View
B+
Retailer 6
-
£444 GBP
View
B+
Retailer 7
-
£484 GBP
View
B
Retailer 8
-
£748 GBP
View
B
Retailer 9
-
£820 GBP
View
B
Retailer 10
-
£883 GBP
View
Most Expensive
B
Do Amore Diamonds
27-707838CDD · Nov 4
£1,657 GBP
$2,230 USD
View
10 more retailers have this diamond
Prices start from £186 GBPSave up to £1,470 GBP

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
£186 GBP