Marquise|Lab Grown|IGI

1.08ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG851663301

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG851663301

Diamond specifications and retailer prices

From $350 USD
£276 GBP
As of October 31, 2026
Save $290 USD (45%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $640 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.08ct lab-grown marquise diamond

This 1.08ct 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 LG851663301 or 851663301. Listed at 2 retailers as of October 30, 2026, with prices from $350 to $640, a $290 spread on the same certified stone. Brilliant Earth lists it at $640. 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

1.08
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851663301
Dimensions10.87 × 5.19 × 3.33 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
10.87 mm5.19 mm1.08 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851663301
Side View
Table 62.0%Crown 35.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $350 USD|Low: $348 USD|High: $350 USD|Avg: $349 USD|+0.6%
October 31, 2026
Retailer 1$350 USD

4 data points across 1 retailer

2 retailers$350 USD to $640 USD

A
Cheapest Retailer
-
$350 USD
£276 GBP
Most Expensive
B
Brilliant Earth
22330071A · Oct 30
$640 USD
View
1 more retailer has this diamond
Prices start from $350 USDSave up to $290 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
1.08ct Marquise
$350 USD