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Marquise|Lab Grown|IGI

1.77ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG762545100

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762545100

Diamond specifications and retailer prices

From $1,732 AUD
$1,214 USD
As of November 2, 2026
Save $5,121 AUD (75%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,853 AUD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 LG762545100 or 762545100. Listed at 16 retailers as of October 31, 2026, with prices from $1,732 to $6,853, a $5,121 spread on the same certified stone. Taylor and Hart lists it at $6,853. 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
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762545100
Dimensions12.67 × 6.33 × 3.93 mm
L/W Ratio2.00
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
12.67 mm6.33 mm1.77 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762545100
Side View
Table 57.0%Crown 33.2°Girdle: MED-THKPavilion 40.5°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $2,798 AUD|Low: $1,732 AUD|High: $6,774 AUD|Avg: $3,913 AUD|-1.2%
Retailer 1
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
November 2, 2026
Retailer 4$1,732 AUD
Retailer 3$2,046 AUD
Retailer 1$2,798 AUD
Retailer 14$2,808 AUD
Retailer 13$2,911 AUD
Retailer 6$2,917 AUD
Retailer 10$3,106 AUD
Retailer 11$3,546 AUD
Retailer 12$4,963 AUD
Retailer 5$5,001 AUD
Retailer 2$5,418 AUD
Retailer 9$5,551 AUD
Retailer 7$6,199 AUD
Retailer 8$6,683 AUD

44 data points across 14 retailers

16 retailers$1,732 AUD to $6,853 AUD

A
Cheapest Retailer
-
$1,732 AUD
$1,214 USD
A
Retailer 2
-
$2,046 AUD
$1,434 USD
View
A
Retailer 3
-
$2,466 AUD
HK$13,500 HKD
View
A
Retailer 4
-
$2,798 AUD
£1,544 GBP
View
A
Retailer 5
-
$2,808 AUD
View
Retailer 6
-
$2,886 AUD
£1,593 GBP
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$2,911 AUD
$2,040 USD
View
B+
Retailer 8
-
$3,106 AUD
€2,073 EUR
View
B+
Retailer 9
-
$3,546 AUD
ZAR 40,152 ZAR
View
B
Retailer 10
-
$4,963 AUD
$3,478 USD
View
Retailer 11
-
$5,001 AUD
$3,505 USD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$5,418 AUD
$3,797 USD
View
B+
Retailer 13
-
$5,551 AUD
$3,890 USD
View
B
Retailer 14
-
$6,199 AUD
£3,421 GBP
View
B
Retailer 15
-
$6,683 AUD
View
Most Expensive
B
Taylor and Hart
5X4JO7U · Oct 31
$6,853 AUD
$4,803 USD
View
15 more retailers have this diamond
Prices start from $1,732 AUDSave up to $5,121 AUD

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.

A
1.77ct Marquise
$1,732 AUD