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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 $935 USD
As of November 4, 2026
Save $4,045 USD (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $4,980 USD 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 $935 to $4,980, a $4,045 spread on the same certified stone. Brilliant Earth lists it at $4,980. 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
Color
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

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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: $4,980 USD|Low: $935 USD|High: $4,980 USD|Avg: $2,246 USD
Brilliant Earth
Retailer 2
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Retailer 22
November 5, 2026
Retailer 15$935 USD
Retailer 5$1,017 USD
Retailer 11$1,047 USD
Retailer 4$1,085 USD
Retailer 19$1,085 USD
Retailer 3$1,254 USD
Retailer 17$1,260 USD
Retailer 22$1,273 USD
Retailer 9$1,295 USD
Retailer 2$1,656 USD
Retailer 18$1,724 USD
Retailer 10$1,737 USD
Retailer 16$1,995 USD
Retailer 21$2,413 USD
Retailer 8$3,002 USD
Retailer 20$3,050 USD
Retailer 6$3,394 USD
Retailer 12$3,539 USD
Retailer 14$3,640 USD
Retailer 13$3,679 USD
Retailer 7$3,773 USD
Brilliant Earth$4,980 USD

38 data points across 22 retailers

24 retailers$935 USD to $4,980 USD

A
Cheapest Retailer
-
$935 USD
A
Retailer 2
-
$1,017 USD
View
A
Retailer 3
-
$1,047 USD
View
Final sale: no returns
Retailer 4
-
$1,085 USD
View
Price last confirmed 19 days ago
A
Retailer 5
-
$1,085 USD
View
A
Retailer 6
-
$1,254 USD
View
A
Retailer 7
-
$1,260 USD
View
A
Retailer 8
-
$1,273 USD
View
A
Retailer 9
-
$1,295 USD
View
A
Retailer 10
-
$1,656 USD
View
Retailer 11
-
$1,724 USD
View
Price last confirmed 9 days ago
A
Retailer 12
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$1,737 USD
View
B+
Retailer 13
-
$1,995 USD
View
B+
Retailer 14
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$2,413 USD
View
B
Retailer 15
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$3,002 USD
View
B
Retailer 16
-
$3,050 USD
View
B+
Retailer 17
-
$3,222 USD
View
B
Retailer 18
-
$3,394 USD
View
B
Retailer 19
-
$3,539 USD
View
B
Retailer 20
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$3,640 USD
View
B
Retailer 21
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$3,679 USD
View
Retailer 22
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$3,761 USD
View
Price last confirmed 88 days ago
B
Retailer 23
-
$3,773 USD
View
Most Expensive
B
Brilliant Earth
19074259A · Nov 4
$4,980 USD
View
23 more retailers have this diamond
Prices start from $935 USDSave up to $4,045 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.

A
1.55ct Marquise
$935 USD