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Marquise|Lab Grown|IGI

1.55ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG743593780

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG743593780

Diamond specifications and retailer prices

From $596 USD
As of November 4, 2026
Save $4,694 USD (89%) vs most expensive(unlock to see where)
35 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 LG743593780 or 743593780. Listed at 35 retailers as of November 4, 2026, with prices from $596 to $5,290, a $4,694 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 angle34.3°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743593780
Dimensions12.23 × 6.01 × 3.74 mm
L/W Ratio2.03
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
12.23 mm6.01 mm1.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743593780
Side View
Table 57.0%Crown 34.3°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 62.2%

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: $5,290 USD|Low: $596 USD|High: $5,880 USD|Avg: $1,990 USD|-10.0%
Do Amore Diamonds
Retailer 2
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Retailer 26
November 6, 2026
Retailer 6$596 USD
Retailer 22$748 USD
Retailer 25$770 USD
Retailer 13$858 USD
Retailer 21$890 USD
Retailer 26$1,011 USD
Retailer 18$1,012 USD
Retailer 7$1,150 USD
Retailer 24$1,201 USD
Retailer 2$1,241 USD
Retailer 17$1,396 USD
Retailer 14$1,557 USD
Retailer 9$1,834 USD
Retailer 20$1,927 USD
Retailer 12$1,936 USD
Retailer 8$2,146 USD
Retailer 5$2,359 USD
Retailer 4$2,377 USD
Retailer 10$2,439 USD
Retailer 19$2,675 USD
Retailer 3$2,747 USD
Retailer 16$2,770 USD
Retailer 11$2,908 USD
Retailer 23$3,206 USD
Retailer 15$3,567 USD
Do Amore Diamonds$5,290 USD

26 data points across 26 retailers

35 retailers$596 USD to $5,290 USD

A
Cheapest Retailer
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$596 USD
Retailer 2
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$671 USD
View
Price last confirmed 29 days ago
Retailer 3
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$671 USD
View
Price last confirmed 37 days ago
Retailer 4
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$730 USD
View
Price last confirmed 38 days ago
A
Retailer 5
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$748 USD
View
Final sale: no returns
Retailer 6
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$768 USD
View
Price last confirmed 38 days ago
A
Retailer 7
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$770 USD
View
Retailer 8
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$778 USD
View
Price last confirmed 34 days ago
Retailer 9
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$778 USD
View
Price last confirmed 27 days ago
A
Retailer 10
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$858 USD
View
A
Retailer 11
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$890 USD
View
A
Retailer 12
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$1,011 USD
View
A
Retailer 13
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$1,012 USD
View
A
Retailer 14
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$1,150 USD
View
A
Retailer 15
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$1,201 USD
View
A
Retailer 16
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$1,241 USD
View
Retailer 17
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$1,376 USD
View
Price last confirmed 22 days ago
A
Retailer 18
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$1,396 USD
View
A
Retailer 19
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$1,557 USD
View
B+
Retailer 20
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$1,834 USD
View
B+
Retailer 21
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$1,927 USD
View
B+
Retailer 22
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$1,936 USD
View
B+
Retailer 23
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$2,146 USD
View
B+
Retailer 24
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$2,359 USD
View
B+
Retailer 25
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$2,377 USD
View
Retailer 26
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$2,416 USD
View
Price last confirmed 37 days ago
Retailer 27
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$2,416 USD
View
Price last confirmed 27 days ago
B+
Retailer 28
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$2,439 USD
View
Retailer 29
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$2,675 USD
View
Price last confirmed 9 days ago
B+
Retailer 30
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$2,747 USD
View
B+
Retailer 31
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$2,770 USD
View
B+
Retailer 32
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$2,908 USD
View
B+
Retailer 33
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$3,206 USD
View
B
Retailer 34
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$3,567 USD
View
Most Expensive
B
Do Amore Diamonds
27-5980D0A17 · Nov 6
$5,290 USD
View
34 more retailers have this diamond
Prices start from $596 USDSave up to $4,694 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
$596 USD