CaratHunter
Plans
Marquise|Lab Grown|IGI

1.55ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG813622880

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG813622880

Diamond specifications and retailer prices

From £855 GBP
As of November 4, 2026
Save £2,399 GBP (74%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £3,254 GBP at Brilliant Earth · As of November 5, 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 LG813622880 or 813622880. Listed at 24 retailers as of November 4, 2026, with prices from £855 to £3,254, a £2,399 spread on the same certified stone. Brilliant Earth lists it at £3,254. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813622880
Dimensions11.86 × 6.11 × 3.76 mm
L/W Ratio1.94
Girdle conditionFaceted
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
11.86 mm6.11 mm1.55 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813622880
Side View
Table 61.0%Crown 33.7°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £3,254 GBP|Low: £970 GBP|High: £3,254 GBP|Avg: £1,649 GBP|+1.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 4£999 GBP
Retailer 9£1,014 GBP
Retailer 5£1,250 GBP
Retailer 2£1,265 GBP
Retailer 3£1,267 GBP
Retailer 10£1,451 GBP
Retailer 7£1,629 GBP
Retailer 8£1,709 GBP
Retailer 11£2,615 GBP
Retailer 6£3,004 GBP
Brilliant Earth£3,254 GBP

33 data points across 11 retailers

24 retailers£855 GBP to £3,254 GBP

Retailer 1
-
£764 GBP
Price last confirmed 28 days ago
Retailer 2
-
£831 GBP
View
Price last confirmed 21 days ago
A
Retailer 3
-
£855 GBP
View
Final sale: no returns
Retailer 4
-
£886 GBP
View
Price last confirmed 33 days ago
Retailer 5
-
£886 GBP
View
Price last confirmed 24 days ago
A
Retailer 6
-
£970 GBP
View
A
Retailer 7
-
£999 GBP
View
A
Retailer 8
-
£1,014 GBP
View
B+
Retailer 9
-
£1,250 GBP
View
A
Retailer 10
-
£1,265 GBP
View
B+
Retailer 11
-
£1,267 GBP
View
Retailer 12
-
£1,451 GBP
View
Price last confirmed 7 days ago
B+
Retailer 13
-
£1,629 GBP
View
Retailer 14
-
£1,661 GBP
View
Price last confirmed 36 days ago
B+
Retailer 15
-
£1,709 GBP
View
B
Retailer 16
-
£2,445 GBP
View
B+
Retailer 17
-
£2,615 GBP
View
Retailer 18
-
£2,742 GBP
View
Price last confirmed 29 days ago
B
Retailer 19
-
£2,849 GBP
View
B
Retailer 20
-
£2,968 GBP
View
B
Retailer 21
-
£3,004 GBP
View
B
Retailer 22
-
£3,090 GBP
View
B
Retailer 23
-
£3,202 GBP
View
Most Expensive
B
Brilliant Earth
20938449A · Nov 5
£3,254 GBP
$4,380 USD
View
23 more retailers have this diamond
Prices start from £855 GBPSave up to £2,399 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
£855 GBP