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Marquise|Lab Grown|IGI

1.55ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG744515375

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG744515375

Diamond specifications and retailer prices

From $748 USD
As of November 6, 2026
Save $4,542 USD (86%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $5,290 USD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG744515375 or 744515375. Listed at 31 retailers as of November 6, 2026, with prices from $748 to $5,290, a $4,542 spread on the same certified stone. Do Amore Diamonds lists it at $5,290. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744515375
Dimensions11.79 × 6.02 × 3.80 mm
L/W Ratio1.96
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
11.79 mm6.02 mm1.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744515375
Side View
Table 57.0%Crown 36.4°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 63.1%

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 6
Current: $5,290 USD|Low: $599 USD|High: $5,320 USD|Avg: $2,001 USD|-0.6%
Do Amore Diamonds
Retailer 2
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November 6, 2026
Retailer 18$599 USD
Retailer 17$743 USD
Retailer 2$748 USD
Retailer 24$870 USD
Retailer 21$890 USD
Retailer 16$955 USD
Retailer 14$1,011 USD
Retailer 4$1,150 USD
Retailer 23$1,201 USD
Retailer 13$1,241 USD
Retailer 10$1,409 USD
Retailer 6$1,834 USD
Retailer 20$1,927 USD
Retailer 9$1,936 USD
Retailer 5$2,146 USD
Retailer 19$2,359 USD
Retailer 3$2,377 USD
Retailer 7$2,439 USD
Retailer 15$2,675 USD
Retailer 25$2,747 USD
Retailer 12$2,770 USD
Retailer 8$2,908 USD
Retailer 22$3,206 USD
Retailer 11$3,517 USD
Do Amore Diamonds$5,290 USD

33 data points across 25 retailers

31 retailers$748 USD to $5,290 USD

Retailer 1
-
$599 USD
Price last confirmed 29 days ago
Retailer 2
-
$671 USD
View
Price last confirmed 37 days ago
Retailer 3
-
$730 USD
View
Price last confirmed 38 days ago
Retailer 4
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$743 USD
View
Price last confirmed 29 days ago
Retailer 5
-
$743 USD
View
Price last confirmed 27 days ago
A
Retailer 6
-
$748 USD
View
Final sale: no returns
Retailer 7
-
$768 USD
View
Price last confirmed 38 days ago
A
Retailer 8
-
$870 USD
View
A
Retailer 9
-
$890 USD
View
A
Retailer 10
-
$955 USD
View
A
Retailer 11
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$1,011 USD
View
A
Retailer 12
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$1,150 USD
View
A
Retailer 13
-
$1,201 USD
View
A
Retailer 14
-
$1,241 USD
View
A
Retailer 15
-
$1,409 USD
View
B+
Retailer 16
-
$1,834 USD
View
B+
Retailer 17
-
$1,927 USD
View
B+
Retailer 18
-
$1,936 USD
View
B+
Retailer 19
-
$2,146 USD
View
Retailer 20
-
$2,157 USD
View
Price last confirmed 27 days ago
B+
Retailer 21
-
$2,359 USD
View
B+
Retailer 22
-
$2,377 USD
View
Retailer 23
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$2,416 USD
View
Price last confirmed 37 days ago
B+
Retailer 24
-
$2,439 USD
View
Retailer 25
-
$2,675 USD
View
Price last confirmed 9 days ago
B
Retailer 26
-
$2,747 USD
View
B+
Retailer 27
-
$2,770 USD
View
B
Retailer 28
-
$2,908 USD
View
B+
Retailer 29
-
$3,206 USD
View
B
Retailer 30
-
$3,517 USD
View
Most Expensive
B
Do Amore Diamonds
27-4C482EC3F · Nov 6
$5,290 USD
View
30 more retailers have this diamond
Prices start from $748 USDSave up to $4,542 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
$748 USD