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Marquise|Lab Grown|IGI

1.55ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG790611664

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790611664

Diamond specifications and retailer prices

From $922 USD
As of November 2, 2026
Save $4,058 USD (81%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,980 USD at Brilliant Earth · As of October 31, 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 LG790611664 or 790611664. Listed at 23 retailers as of October 31, 2026, with prices from $922 to $4,980, a $4,058 spread on the same certified stone. Brilliant Earth lists it at $4,980. 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 angle34.5°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790611664
Dimensions11.69 × 6.12 × 3.79 mm
L/W Ratio1.91
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
11.69 mm6.12 mm1.55 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790611664
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 39.9°Culet: NoneDepth 61.9%

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 2
Current: $4,980 USD|Low: $922 USD|High: $4,980 USD|Avg: $2,146 USD
Brilliant Earth
Retailer 2
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Retailer 22
November 2, 2026
Retailer 15$922 USD
Retailer 5$1,003 USD
Retailer 11$1,032 USD
Retailer 4$1,069 USD
Retailer 20$1,069 USD
Retailer 19$1,242 USD
Retailer 17$1,245 USD
Retailer 3$1,270 USD
Retailer 9$1,281 USD
Retailer 2$1,647 USD
Retailer 18$1,699 USD
Retailer 10$1,715 USD
Retailer 16$1,966 USD
Retailer 22$2,379 USD
Retailer 8$2,957 USD
Retailer 21$3,007 USD
Retailer 6$3,346 USD
Retailer 12$3,497 USD
Retailer 14$3,588 USD
Retailer 13$3,627 USD
Retailer 7$3,718 USD
Brilliant Earth$4,980 USD

38 data points across 22 retailers

23 retailers$922 USD to $4,980 USD

A
Cheapest Retailer
-
$922 USD
A
Retailer 2
-
$1,003 USD
View
A
Retailer 3
-
$1,032 USD
View
Final sale: no returns
A
Retailer 4
-
$1,069 USD
View
Retailer 5
-
$1,069 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
$1,242 USD
HK$9,700 HKD
View
A
Retailer 7
-
$1,245 USD
View
A
Retailer 8
-
$1,270 USD
View
A
Retailer 9
-
$1,281 USD
View
A
Retailer 10
-
$1,647 USD
£1,297 GBP
View
A
Retailer 11
-
$1,699 USD
€1,618 EUR
View
A
Retailer 12
-
$1,715 USD
View
B+
Retailer 13
-
$1,966 USD
ZAR 31,758 ZAR
View
B+
Retailer 14
-
$2,379 USD
View
B
Retailer 15
-
$2,957 USD
£2,328 GBP
View
B
Retailer 16
-
$3,007 USD
View
B+
Retailer 17
-
$3,175 USD
View
B
Retailer 18
-
$3,346 USD
View
B
Retailer 19
-
$3,497 USD
View
B+
Retailer 20
-
$3,588 USD
SGD 4,849 SGD
View
B
Retailer 21
-
$3,627 USD
£2,856 GBP
View
B
Retailer 22
-
$3,718 USD
View
Most Expensive
B
Brilliant Earth
19074327A · Oct 31
$4,980 USD
View
22 more retailers have this diamond
Prices start from $922 USDSave up to $4,058 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
$922 USD