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Marquise|Lab Grown|IGI

1.55ct F VVS1 Marquise Lab Grown Diamond

EX • F/VVS1 • IGI LG816687418

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG816687418

Diamond specifications and retailer prices

From £362 GBP
As of November 6, 2026
Save £1,393 GBP (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,756 GBP at Brilliant Earth · As of November 6, 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 F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG816687418 or 816687418. Listed at 15 retailers as of November 6, 2026, with prices from £362 to £1,756, a £1,393 spread on the same certified stone. Brilliant Earth lists it at £1,756. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
F
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816687418
Dimensions11.64 × 6.14 × 3.83 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.64 mm6.14 mm1.55 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816687418
Side View
Table 59.0%Crown 34.8°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,756 GBP|Low: £362 GBP|High: £1,756 GBP|Avg: £779 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 16£362 GBP
Retailer 4£366 GBP
Retailer 6£400 GBP
Retailer 15£430 GBP
Retailer 7£490 GBP
Retailer 2£529 GBP
Retailer 14£552 GBP
Retailer 12£595 GBP
Retailer 9£617 GBP
Retailer 11£805 GBP
Retailer 3£923 GBP
Retailer 13£1,020 GBP
Retailer 5£1,109 GBP
Retailer 8£1,225 GBP
Retailer 10£1,344 GBP
Brilliant Earth£1,756 GBP

38 data points across 16 retailers

15 retailers£362 GBP to £1,756 GBP

A
Cheapest Retailer
-
£362 GBP
A
Retailer 2
-
£400 GBP
View
A
Retailer 3
-
£430 GBP
View
A
Retailer 4
-
£490 GBP
View
A
Retailer 5
-
£529 GBP
View
B+
Retailer 6
-
£552 GBP
View
B+
Retailer 7
-
£595 GBP
View
B+
Retailer 8
-
£617 GBP
View
B+
Retailer 9
-
£805 GBP
View
B
Retailer 10
-
£923 GBP
View
Retailer 11
-
£1,020 GBP
View
Price last confirmed 8 days ago
B
Retailer 12
-
£1,109 GBP
View
B
Retailer 13
-
£1,225 GBP
View
B
Retailer 14
-
£1,344 GBP
View
Most Expensive
B
Brilliant Earth
20697220A · Nov 6
£1,756 GBP
$2,350 USD
View
14 more retailers have this diamond
Prices start from £362 GBPSave up to £1,393 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
£362 GBP