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Marquise|Lab Grown|IGI

1.77ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG762545098

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762545098

Diamond specifications and retailer prices

From $1,968 USD
A$3,028 AUD
As of November 2, 2026
14 retailers carry this diamond
Most expensive: $5,110 USD at Brilliant Earth · As of October 18, 2026
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 LG762545098 or 762545098. Listed at 14 retailers as of November 2, 2026. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762545098
Dimensions12.39 × 6.35 × 3.97 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
12.39 mm6.35 mm1.77 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762545098
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $5,110 USD|Low: $1,214 USD|High: $5,270 USD|Avg: $2,774 USD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 26, 2026
Retailer 5$1,214 USD
Retailer 4$1,434 USD
Retailer 2$1,968 USD
Retailer 11$2,023 USD
Retailer 12$2,040 USD
Retailer 9$2,164 USD
Retailer 10$2,255 USD
Retailer 7$2,458 USD
Retailer 3$3,410 USD
Retailer 6$3,505 USD
Retailer 14$3,797 USD
Retailer 8$4,368 USD
Retailer 13$4,748 USD
Brilliant Earth$5,110 USD

31 data points across 14 retailers

14 retailers

Retailer 1
-
$1,214 USD
Price last confirmed 14 days ago
Retailer 2
-
$1,434 USD
View
Price last confirmed 14 days ago
Retailer 3
-
$1,728 USD
HK$13,500 HKD
View
Price last confirmed 15 days ago
B+
Retailer 4
-
$1,968 USD
A$3,028 AUD
View
Retailer 5
-
$2,023 USD
£1,593 GBP
View
Price last confirmed 18 days ago
Retailer 6
-
$2,023 USD
£1,593 GBP
View
Price last confirmed 15 days ago
Retailer 7
-
$2,040 USD
View
Price last confirmed 15 days ago
Retailer 8
-
$2,458 USD
ZAR 39,712 ZAR
View
Price last confirmed 13 days ago
Retailer 9
-
$3,505 USD
View
Price last confirmed 18 days ago
Retailer 10
-
$3,797 USD
View
Price last confirmed 15 days ago
Retailer 11
-
$4,368 USD
£3,439 GBP
View
Price last confirmed 14 days ago
Retailer 12
-
$4,748 USD
A$7,304 AUD
View
Price last confirmed 28 days ago
Retailer 13
-
$4,803 USD
View
Price last confirmed 15 days ago
Most Expensive
Brilliant Earth
18939168Y · Oct 18
$5,110 USD
View
Price last confirmed 15 days ago
13 more retailers have this diamond
Prices start from $1,968 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
$1,968 USD