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Marquise|Lab Grown|IGI

1.05ct F SI1 Marquise Lab Grown Diamond

EX • F/SI1 • IGI LG842663001

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG842663001

Diamond specifications and retailer prices

From $900 USD
As of November 2, 2026
2 retailers carry this diamond
Most expensive: $900 USD at Brilliant Earth
View at Brilliant Earth

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG842663001 or 842663001. Listed at 2 retailers as of November 2, 2026. 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

1.05
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842663001
Dimensions10.85 × 5.19 × 3.26 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.85 mm5.19 mm1.05 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842663001
Side View
Table 62.0%Crown 35.3°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: $900 USD|Low: $327 USD|High: $900 USD|Avg: $618 USD
Brilliant Earth
Retailer 2
October 20, 2026
Retailer 2$327 USD
Brilliant Earth$900 USD

11 data points across 2 retailers

2 retailers

Retailer 1
-
$327 USD
£257 GBP
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
21744543A · Nov 2
$900 USD
View
1 more retailer has this diamond

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
1.05ct Marquise
$900 USD