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Marquise|Lab Grown|IGI

1.55ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG788617133

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG788617133

Diamond specifications and retailer prices

From $964 USD
As of October 30, 2026
Save $2,996 USD (76%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $3,960 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG788617133 or 788617133. Listed at 26 retailers as of October 30, 2026, with prices from $964 to $3,960, a $2,996 spread on the same certified stone. Brilliant Earth lists it at $3,960. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788617133
Dimensions12.25 × 6.07 × 3.68 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.25 mm6.07 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788617133
Side View
Table 58.0%Crown 36.1°Girdle: MediumPavilion 39.1°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
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: $3,960 USD|Low: $964 USD|High: $4,351 USD|Avg: $2,216 USD
Brilliant Earth
Retailer 2
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Retailer 23
October 31, 2026
Retailer 8$964 USD
Retailer 23$1,049 USD
Retailer 5$1,118 USD
Retailer 7$1,118 USD
Retailer 17$1,159 USD
Retailer 18$1,234 USD
Retailer 6$1,291 USD
Retailer 4$1,293 USD
Retailer 22$1,295 USD
Retailer 10$1,401 USD
Retailer 11$1,600 USD
Retailer 2$1,724 USD
Retailer 19$1,754 USD
Retailer 21$2,055 USD
Retailer 13$2,138 USD
Retailer 16$3,094 USD
Retailer 9$3,143 USD
Retailer 3$3,323 USD
Retailer 12$3,631 USD
Retailer 14$3,751 USD
Retailer 20$3,811 USD
Retailer 15$3,892 USD
Brilliant Earth$3,960 USD

25 data points across 23 retailers

26 retailers$964 USD to $3,960 USD

A
Cheapest Retailer
-
$964 USD
A
Retailer 2
-
$1,049 USD
View
Retailer 3
-
$1,118 USD
View
Price last confirmed 14 days ago
A
Retailer 4
-
$1,118 USD
View
A
Retailer 5
-
$1,159 USD
View
Final sale: no returns
A
Retailer 6
-
$1,234 USD
£972 GBP
View
A
Retailer 7
-
$1,291 USD
View
A
Retailer 8
-
$1,293 USD
HK$10,100 HKD
View
A
Retailer 9
-
$1,295 USD
View
A
Retailer 10
-
$1,401 USD
View
A
Retailer 11
-
$1,600 USD
View
A
Retailer 12
-
$1,724 USD
£1,357 GBP
View
B+
Retailer 13
-
$1,754 USD
€1,670 EUR
View
B+
Retailer 14
-
$1,877 USD
A$2,888 AUD
View
B+
Retailer 15
-
$2,055 USD
ZAR 33,197 ZAR
View
B+
Retailer 16
-
$2,138 USD
View
B+
Retailer 17
-
$3,094 USD
£2,436 GBP
View
B
Retailer 18
-
$3,143 USD
View
B+
Retailer 19
-
$3,323 USD
View
B+
Retailer 20
-
$3,339 USD
View
B
Retailer 21
-
$3,631 USD
View
B
Retailer 22
-
$3,751 USD
SGD 5,069 SGD
View
B
Retailer 23
-
$3,811 USD
£3,001 GBP
View
B
Retailer 24
-
$3,892 USD
View
Retailer 25
-
$3,960 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
20473618A · Oct 30
$3,960 USD
View
25 more retailers have this diamond
Prices start from $964 USDSave up to $2,996 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
$964 USD