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Marquise|Lab Grown|IGI

1.09ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG786601191

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG786601191

Diamond specifications and retailer prices

From HK$5,256 HKD
$670 USD
As of November 4, 2026
1 retailer carries this diamond
Only listing: HK$5,256 HKD 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 1.09ct lab-grown marquise diamond

This 1.09ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG786601191 or 786601191. Listed at a single retailer as of November 4, 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

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786601191
Dimensions10.92 × 5.18 × 3.34 mm
L/W Ratio2.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.92 mm5.18 mm1.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786601191
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 64.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: HK$5,256 HKD|Low: HK$1,020 HKD|High: HK$8,159 HKD|Avg: HK$4,021 HKD|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
August 21, 2026
Retailer 7HK$2,275 HKD
Retailer 5HK$2,581 HKD
Retailer 2HK$2,612 HKD
Retailer 10HK$2,612 HKD
Retailer 4HK$2,848 HKD
Retailer 6HK$3,813 HKD
Retailer 8HK$4,260 HKD
Retailer 3HK$4,472 HKD
Brilliant EarthHK$5,256 HKD
Retailer 9HK$5,578 HKD

67 data points across 10 retailers

1 retailer

B
Brilliant Earth
18521997A · Nov 4
HK$5,256 HKD
$670 USD
View

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B
1.09ct Marquise
HK$5,256 HKD