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Marquise|Lab Grown|IGI

1.77ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG727587267

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG727587267

Diamond specifications and retailer prices

From $4,640 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $4,640 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 1.77ct lab-grown marquise diamond

This 1.77ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG727587267 or 727587267. 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. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727587267
Dimensions12.28 × 6.23 × 3.98 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
12.28 mm6.23 mm1.77 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727587267
Side View
Table 60.0%Crown 37.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.0%

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: $4,640 USD|Low: $4,340 USD|High: $6,999 USD|Avg: $5,648 USD|+3.3%
Brilliant Earth
Retailer 2
January 8, 2026
Brilliant Earth$4,640 USD
Retailer 2$6,999 USD

7 data points across 2 retailers

1 retailer

B
Brilliant Earth
16223552B · Oct 31
$4,640 USD
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B
1.77ct Marquise
$4,640 USD