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Marquise|Lab Grown|IGI

1.55ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG811619399

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG811619399

Diamond specifications and retailer prices

From $1,028 USD
As of November 4, 2026
Save $3,962 USD (79%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,990 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 LG811619399 or 811619399. Listed at 25 retailers as of November 4, 2026, with prices from $1,028 to $4,990, a $3,962 spread on the same certified stone. Brilliant Earth lists it at $4,990. 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 angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811619399
Dimensions9.35 × 6.66 × 4.01 mm
L/W Ratio1.40
Girdle conditionFaceted
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
9.35 mm6.66 mm1.55 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811619399
Side View
Table 60.0%Crown 32.9°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.2%

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: $4,990 USD|Low: $987 USD|High: $4,990 USD|Avg: $2,160 USD|+0.2%
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
Retailer 15
Retailer 16
November 5, 2026
Retailer 5$1,028 USD
Retailer 16$1,118 USD
Retailer 3$1,192 USD
Retailer 4$1,192 USD
Retailer 10$1,344 USD
Retailer 14$1,365 USD
Retailer 11$1,682 USD
Retailer 9$1,702 USD
Retailer 7$1,705 USD
Retailer 15$1,953 USD
Retailer 12$2,193 USD
Retailer 6$2,235 USD
Retailer 13$2,300 USD
Retailer 8$3,520 USD
Retailer 2$4,032 USD
Brilliant Earth$4,990 USD

37 data points across 16 retailers

25 retailers$1,028 USD to $4,990 USD

A
Cheapest Retailer
-
$1,028 USD
A
Retailer 2
-
$1,118 USD
View
A
Retailer 3
-
$1,151 USD
View
Final sale: no returns
A
Retailer 4
-
$1,192 USD
View
Retailer 5
-
$1,192 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
$1,305 USD
View
A
Retailer 7
-
$1,344 USD
View
A
Retailer 8
-
$1,365 USD
View
A
Retailer 9
-
$1,395 USD
View
B+
Retailer 10
-
$1,682 USD
View
A
Retailer 11
-
$1,702 USD
View
A
Retailer 12
-
$1,705 USD
View
Retailer 13
-
$1,953 USD
View
Price last confirmed 7 days ago
B+
Retailer 14
-
$2,193 USD
View
B+
Retailer 15
-
$2,235 USD
View
B+
Retailer 16
-
$2,300 USD
View
B+
Retailer 17
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$2,492 USD
View
B
Retailer 18
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$3,291 USD
View
B
Retailer 19
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$3,520 USD
View
B
Retailer 20
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$3,696 USD
View
B
Retailer 21
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$3,835 USD
View
B
Retailer 22
-
$3,995 USD
View
B
Retailer 23
-
$4,032 USD
View
B
Retailer 24
-
$4,159 USD
View
Most Expensive
B
Brilliant Earth
20637611A · Nov 4
$4,990 USD
View
24 more retailers have this diamond
Prices start from $1,028 USDSave up to $3,962 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
$1,028 USD