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Marquise|Lab Grown|IGI

1.66ct F VS2 Marquise Lab Grown Diamond

EX • F/VS2 • IGI LG770692331

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG770692331

Diamond specifications and retailer prices

From $1,490 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: $1,490 USD 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 1.66ct lab-grown marquise diamond

This 1.66ct lab-grown marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG770692331 or 770692331. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
F
Color
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770692331
Dimensions11.83 × 6.20 × 3.94 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.83 mm6.20 mm1.66 ctF / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770692331
Side View
Table 60.0%Crown 35.4°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.5%

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: $1,490 USD|Low: $329 USD|High: $1,490 USD|Avg: $809 USD|+4.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
April 20, 2026
Retailer 9$333 USD
Retailer 4$484 USD
Retailer 10$510 USD
Retailer 6$585 USD
Retailer 5$619 USD
Retailer 7$703 USD
Retailer 8$1,181 USD
Retailer 3$1,267 USD
Retailer 2$1,268 USD
Brilliant Earth$1,490 USD

27 data points across 10 retailers

1 retailer

B
Brilliant Earth
18366993Y · Nov 2
$1,490 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
1.66ct Marquise
$1,490 USD