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Marquise|Lab Grown|IGI

1.77ct D IF Marquise Lab Grown Diamond

D/IF • IGI LG780661430

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780661430

Diamond specifications and retailer prices

From $3,940 USD
As of October 31, 2026
Save $808 USD (17%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,748 USD at Novita Diamonds · As of October 31, 2026
View at Novita Diamonds

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) and certified by IGI LG780661430 or 780661430. Listed at 2 retailers as of October 31, 2026, with prices from $3,940 to $4,748, a $808 spread on the same certified stone. Novita Diamonds lists it at $4,748. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.77
Carat
D
Color
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780661430
Dimensions12.51 × 6.40 × 3.86 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
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
12.51 mm6.40 mm1.77 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780661430
Side View
Table 59.0%Crown 33.4°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 60.3%

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: $4,748 USD|Low: $963 USD|High: $7,950 USD|Avg: $3,173 USD|+3.1%
Novita Diamonds
Retailer 2
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October 31, 2026
Retailer 5$963 USD
Retailer 9$1,146 USD
Retailer 11$1,463 USD
Retailer 13$1,595 USD
Retailer 10$1,849 USD
Retailer 16$2,246 USD
Retailer 6$2,550 USD
Retailer 3$2,588 USD
Retailer 8$2,675 USD
Retailer 7$2,725 USD
Retailer 15$3,940 USD
Retailer 2$4,253 USD
Retailer 4$4,732 USD
Novita Diamonds$4,748 USD
Retailer 14$5,326 USD
Retailer 12$7,950 USD

6 data points across 16 retailers

2 retailers$3,940 USD to $4,748 USD

B
Cheapest Retailer
-
$3,940 USD
Most Expensive
B
Novita Diamonds
cert_780661430 · Oct 31
$4,748 USD
A$7,304 AUD
View
1 more retailer has this diamond
Prices start from $3,940 USDSave up to $808 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.

B
1.77ct Marquise
$3,940 USD