Marquise|Lab Grown|IGI

1.55ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG790654384

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790654384

Diamond specifications and retailer prices

From $451 USD
As of October 30, 2026
Save $2,049 USD (82%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $2,500 USD at Brilliant Earth · As of October 30, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790654384 or 790654384. Listed at 28 retailers as of October 30, 2026, with prices from $451 to $2,500, a $2,049 spread on the same certified stone. Brilliant Earth lists it at $2,500. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790654384
Dimensions11.77 × 6.07 × 3.79 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.77 mm6.07 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790654384
Side View
Table 59.0%Crown 34.6°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 62.4%

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: Oct 30
Current: $2,500 USD|Low: $504 USD|High: $3,080 USD|Avg: $1,429 USD|-18.8%
Brilliant Earth
Retailer 2
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Retailer 21
October 31, 2026
Retailer 5$505 USD
Retailer 16$524 USD
Retailer 4$614 USD
Retailer 20$700 USD
Retailer 9$750 USD
Retailer 8$873 USD
Retailer 21$890 USD
Retailer 17$926 USD
Retailer 6$928 USD
Retailer 19$961 USD
Retailer 7$1,117 USD
Retailer 13$1,274 USD
Retailer 18$1,303 USD
Retailer 11$1,774 USD
Retailer 12$1,830 USD
Retailer 10$1,995 USD
Retailer 3$2,057 USD
Retailer 15$2,094 USD
Retailer 14$2,375 USD
Retailer 2$2,402 USD
Brilliant Earth$2,500 USD

32 data points across 21 retailers

28 retailers$451 USD to $2,500 USD

A
Cheapest Retailer
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$451 USD
A
Retailer 2
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$505 USD
View
A
Retailer 3
-
$524 USD
View
Final sale: no returns
Retailer 4
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$559 USD
View
Price last confirmed 14 days ago
A
Retailer 5
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$559 USD
View
A
Retailer 6
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$614 USD
HK$4,800 HKD
View
A
Retailer 7
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$700 USD
View
A
Retailer 8
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$750 USD
View
A
Retailer 9
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$873 USD
View
A
Retailer 10
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$890 USD
€848 EUR
View
A
Retailer 11
-
$926 USD
£729 GBP
View
A
Retailer 12
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$928 USD
A$1,428 AUD
View
A
Retailer 13
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$961 USD
ZAR 15,530 ZAR
View
A
Retailer 14
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$1,117 USD
View
A
Retailer 15
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$1,274 USD
View
A
Retailer 16
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$1,303 USD
A$2,004 AUD
View
A
Retailer 17
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$1,353 USD
View
B+
Retailer 18
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$1,774 USD
SGD 2,397 SGD
View
B+
Retailer 19
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$1,798 USD
View
B+
Retailer 20
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$1,830 USD
View
B+
Retailer 21
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$1,878 USD
View
B+
Retailer 22
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$1,995 USD
View
B+
Retailer 23
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$2,057 USD
£1,620 GBP
View
B+
Retailer 24
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$2,094 USD
View
Retailer 25
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$2,375 USD
View
Price last confirmed 23 days ago
B+
Retailer 26
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$2,402 USD
A$3,696 AUD
View
B+
Retailer 27
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$2,451 USD
£1,930 GBP
View
Most Expensive
B+
Brilliant Earth
20474298A · Oct 30
$2,500 USD
View
27 more retailers have this diamond
Prices start from $451 USDSave up to $2,049 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
$451 USD