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Marquise|Lab Grown|IGI

1.57ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG755534327

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG755534327

Diamond specifications and retailer prices

From €1,226 EUR
$1,370 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: €1,226 EUR at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

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 LG755534327 or 755534327. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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 angle35.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG755534327
Dimensions12.56 × 6.09 × 3.74 mm
L/W Ratio2.06
Girdle conditionFaceted
Top View
12.56 mm6.09 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG755534327
Side View
Table 61.0%Crown 35.3°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: €1,226 EUR|Low: €233 EUR|High: €1,441 EUR|Avg: €708 EUR|-8.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
April 14, 2026
Retailer 3€236 EUR
Retailer 6€370 EUR
Retailer 8€434 EUR
Retailer 5€455 EUR
Retailer 2€690 EUR
Retailer 7€757 EUR
Retailer 4€807 EUR
Brilliant Earth€1,226 EUR

42 data points across 8 retailers

1 retailer

B
Brilliant Earth
17055685A · Oct 31
€1,226 EUR
$1,370 USD
View

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.

B
1.57ct Marquise
€1,226 EUR