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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 $5,039 SGD
$3,940 USD
As of November 2, 2026
Save $1,033 SGD (17%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $6,072 SGD 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 $5,039 to $6,072, a $1,033 spread on the same certified stone. Novita Diamonds lists it at $6,072. 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
Colour
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: Nov 2
Current: $6,072 SGD|Low: $1,232 SGD|High: $10,167 SGD|Avg: $4,057 SGD|+3.1%
Novita Diamonds
Retailer 2
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Retailer 10
Retailer 11
Retailer 12
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Retailer 16
October 31, 2026
Retailer 5$1,232 SGD
Retailer 9$1,466 SGD
Retailer 11$1,871 SGD
Retailer 13$2,040 SGD
Retailer 10$2,365 SGD
Retailer 16$2,872 SGD
Retailer 6$3,262 SGD
Retailer 3$3,310 SGD
Retailer 8$3,421 SGD
Retailer 7$3,485 SGD
Retailer 15$5,039 SGD
Retailer 2$5,439 SGD
Retailer 4$6,052 SGD
Novita Diamonds$6,072 SGD
Retailer 14$6,812 SGD
Retailer 12$10,167 SGD

6 data points across 16 retailers

2 retailers$5,039 SGD to $6,072 SGD

B
Cheapest Retailer
-
$5,039 SGD
$3,940 USD
Most Expensive
B
Novita Diamonds
cert_780661430 · Oct 31
$6,072 SGD
A$7,304 AUD
View
1 more retailer has this diamond
Prices start from $5,039 SGDSave up to $1,033 SGD

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
$5,039 SGD