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Marquise|Lab Grown|IGI

1.55ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG792609341

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG792609341

Diamond specifications and retailer prices

From £730 GBP
As of November 5, 2026
Save £3,520 GBP (83%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: £6,880 GBP at Do Amore Diamonds · As of November 4, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG792609341 or 792609341. Listed at 30 retailers as of November 4, 2026, with a 482% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792609341
Dimensions12.32 × 6.01 × 3.71 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.32 mm6.01 mm1.55 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792609341
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 61.7%

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 5
Current: £868 GBP|Low: £744 GBP|High: £3,648 GBP|Avg: £1,642 GBP
Retailer 1
Retailer 2
Retailer 3
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Retailer 12
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Retailer 18
November 5, 2026
Retailer 3£775 GBP
Retailer 8£843 GBP
Retailer 1£868 GBP
Retailer 10£892 GBP
Retailer 6£899 GBP
Retailer 18£1,029 GBP
Retailer 12£1,356 GBP
Retailer 17£1,382 GBP
Retailer 4£1,419 GBP
Retailer 11£1,424 GBP
Retailer 16£1,506 GBP
Retailer 14£1,825 GBP
Retailer 7£1,859 GBP
Retailer 9£2,555 GBP
Retailer 2£2,649 GBP
Retailer 15£3,187 GBP
Retailer 13£3,610 GBP
Retailer 5£3,648 GBP

44 data points across 18 retailers

30 retailers£730 GBP to £4,251 GBP

A
Cheapest Retailer
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£730 GBP
A
Retailer 2
-
£775 GBP
View
A
Retailer 3
-
£843 GBP
View
A
Retailer 4
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£868 GBP
View
Final sale: no returns
A
Retailer 5
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£892 GBP
View
A
Retailer 6
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£899 GBP
View
Retailer 7
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£899 GBP
View
Price last confirmed 19 days ago
A
Retailer 8
-
£1,029 GBP
View
B+
Retailer 9
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£1,356 GBP
View
B+
Retailer 10
-
£1,382 GBP
View
B+
Retailer 11
-
£1,419 GBP
View
B+
Retailer 12
-
£1,424 GBP
View
Retailer 13
-
£1,506 GBP
View
Price last confirmed 9 days ago
B+
Retailer 14
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£1,825 GBP
View
B+
Retailer 15
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£1,859 GBP
View
B
Retailer 16
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£2,432 GBP
View
B
Retailer 17
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£2,507 GBP
View
B
Retailer 18
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£2,555 GBP
View
B+
Retailer 19
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£2,649 GBP
View
B
Retailer 20
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£2,740 GBP
View
B
Retailer 21
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£2,856 GBP
View
B
Retailer 22
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£3,187 GBP
View
B
Retailer 23
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£3,286 GBP
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B
Retailer 24
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£3,524 GBP
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B
Retailer 25
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£3,524 GBP
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B
Retailer 26
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£3,610 GBP
View
B
Retailer 27
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£3,648 GBP
View
B
Retailer 28
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£4,251 GBP
View
Retailer 29
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£6,137 GBP
View
Price under review
Most Expensive
Do Amore Diamonds
27-BE7D91D76 · Nov 4
£6,880 GBP
$9,260 USD
View
Price under review
29 more retailers have this diamond
Prices start from £730 GBPSave up to £3,520 GBP

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
£730 GBP