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Marquise|Lab Grown|IGI

1.55ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG801694449

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG801694449

Diamond specifications and retailer prices

From £536 GBP
As of November 4, 2026
Save £4,226 GBP (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,763 GBP at Do Amore Diamonds · As of November 5, 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 LG801694449 or 801694449. Listed at 14 retailers as of November 4, 2026, with prices from £536 to £4,763, a £4,226 spread on the same certified stone. Do Amore Diamonds lists it at £4,763. 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 angle34.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801694449
Dimensions11.61 × 6.09 × 3.75 mm
L/W Ratio1.91
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
11.61 mm6.09 mm1.55 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801694449
Side View
Table 59.0%Crown 34.9°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A+
Exceptional
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: £4,763 GBP|Low: £536 GBP|High: £6,011 GBP|Avg: £1,968 GBP|-20.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 16
November 5, 2026
Retailer 12£536 GBP
Retailer 3£583 GBP
Retailer 4£706 GBP
Retailer 14£734 GBP
Retailer 9£754 GBP
Retailer 13£1,008 GBP
Retailer 11£1,158 GBP
Retailer 5£1,293 GBP
Retailer 15£1,532 GBP
Retailer 16£1,930 GBP
Retailer 10£2,340 GBP
Retailer 2£2,566 GBP
Retailer 6£2,609 GBP
Retailer 8£2,930 GBP
Retailer 7£3,073 GBP
Do Amore Diamonds£4,763 GBP

31 data points across 16 retailers

14 retailers£536 GBP to £4,763 GBP

A+
Cheapest Retailer
-
£536 GBP
A
Retailer 2
-
£583 GBP
View
A
Retailer 3
-
£706 GBP
View
A
Retailer 4
-
£734 GBP
View
A
Retailer 5
-
£754 GBP
View
A
Retailer 6
-
£1,008 GBP
View
Retailer 7
-
£1,158 GBP
View
Price last confirmed 7 days ago
B+
Retailer 8
-
£1,293 GBP
View
B+
Retailer 9
-
£1,532 GBP
View
B
Retailer 10
-
£1,930 GBP
View
B+
Retailer 11
-
£2,340 GBP
View
B+
Retailer 12
-
£2,566 GBP
View
Retailer 13
-
£2,609 GBP
View
Price last confirmed 70 days ago
Most Expensive
B
Do Amore Diamonds
27-FB45C6F80 · Nov 5
£4,763 GBP
$6,410 USD
View
13 more retailers have this diamond
Prices start from £536 GBPSave up to £4,226 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
£536 GBP