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Marquise|Lab Grown|IGI

1.55ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG790611819

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790611819

Diamond specifications and retailer prices

From $1,336 AUD
As of November 4, 2026
Save $5,778 AUD (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $7,114 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.55ct lab-grown marquise diamond

This 1.55ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790611819 or 790611819. Listed at 24 retailers as of November 4, 2026, with prices from $1,336 to $7,114, a $5,778 spread on the same certified stone. Brilliant Earth lists it at $7,114. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790611819
Dimensions11.81 × 6.10 × 3.82 mm
L/W Ratio1.94
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
11.81 mm6.10 mm1.55 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790611819
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 40°Culet: NoneDepth 62.6%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $7,114 AUD|Low: $1,336 AUD|High: $7,114 AUD|Avg: $3,208 AUD
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
Retailer 8
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Retailer 11
Retailer 12
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Retailer 22
November 5, 2026
Retailer 15$1,336 AUD
Retailer 5$1,453 AUD
Retailer 11$1,496 AUD
Retailer 4$1,550 AUD
Retailer 19$1,550 AUD
Retailer 3$1,791 AUD
Retailer 17$1,800 AUD
Retailer 22$1,818 AUD
Retailer 9$1,850 AUD
Retailer 2$2,366 AUD
Retailer 18$2,463 AUD
Retailer 10$2,481 AUD
Retailer 16$2,850 AUD
Retailer 21$3,447 AUD
Retailer 8$4,288 AUD
Retailer 20$4,357 AUD
Retailer 6$4,848 AUD
Retailer 12$5,055 AUD
Retailer 14$5,200 AUD
Retailer 13$5,255 AUD
Retailer 7$5,390 AUD
Brilliant Earth$7,114 AUD

38 data points across 22 retailers

24 retailers$1,336 AUD to $7,114 AUD

A
Cheapest Retailer
-
$1,336 AUD
A
Retailer 2
-
$1,453 AUD
View
A
Retailer 3
-
$1,496 AUD
View
Final sale: no returns
Retailer 4
-
$1,550 AUD
View
Price last confirmed 19 days ago
A
Retailer 5
-
$1,550 AUD
View
A
Retailer 6
-
$1,791 AUD
View
A
Retailer 7
-
$1,800 AUD
View
A
Retailer 8
-
$1,818 AUD
View
A
Retailer 9
-
$1,850 AUD
View
A
Retailer 10
-
$2,366 AUD
View
Retailer 11
-
$2,463 AUD
View
Price last confirmed 9 days ago
A
Retailer 12
-
$2,481 AUD
View
B+
Retailer 13
-
$2,850 AUD
View
B+
Retailer 14
-
$3,447 AUD
View
B
Retailer 15
-
$4,288 AUD
View
B
Retailer 16
-
$4,357 AUD
View
B+
Retailer 17
-
$4,603 AUD
View
B
Retailer 18
-
$4,848 AUD
View
B
Retailer 19
-
$5,055 AUD
View
B
Retailer 20
-
$5,200 AUD
View
B
Retailer 21
-
$5,255 AUD
View
Retailer 22
-
$5,373 AUD
View
Price last confirmed 88 days ago
B
Retailer 23
-
$5,390 AUD
View
Most Expensive
B
Brilliant Earth
19074259A · Nov 4
$7,114 AUD
$4,980 USD
View
23 more retailers have this diamond
Prices start from $1,336 AUDSave up to $5,778 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
1.55ct Marquise
$1,336 AUD