Marquise|Lab Grown|IGI

1.55ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG815649012

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG815649012

Diamond specifications and retailer prices

From £332 GBP
$445 USD
As of October 30, 2026
Save £2,616 GBP (89%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £2,948 GBP at Do Amore Diamonds · As of October 29, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815649012 or 815649012. Listed at 23 retailers as of October 29, 2026, with prices from £332 to £2,948, a £2,616 spread on the same certified stone. Do Amore Diamonds lists it at £2,948. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815649012
Dimensions12.16 × 6.06 × 3.78 mm
L/W Ratio2.01
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
12.16 mm6.06 mm1.55 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815649012
Side View
Table 58.0%Crown 35.2°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 62.4%

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: Oct 30
Current: £2,948 GBP|Low: £372 GBP|High: £4,060 GBP|Avg: £1,314 GBP|-27.4%
Do Amore Diamonds
Retailer 2
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Retailer 19
October 30, 2026
Retailer 7£372 GBP
Retailer 17£519 GBP
Retailer 5£645 GBP
Retailer 4£646 GBP
Retailer 8£646 GBP
Retailer 13£756 GBP
Retailer 16£781 GBP
Retailer 15£901 GBP
Retailer 18£1,036 GBP
Retailer 12£1,059 GBP
Retailer 19£1,541 GBP
Retailer 6£1,569 GBP
Retailer 3£1,593 GBP
Retailer 11£1,720 GBP
Retailer 10£1,820 GBP
Retailer 2£1,851 GBP
Retailer 9£1,889 GBP
Retailer 14£1,908 GBP
Do Amore Diamonds£2,948 GBP

31 data points across 19 retailers

23 retailers£332 GBP to £2,948 GBP

A
Cheapest Retailer
-
£332 GBP
$445 USD
A
Retailer 2
-
£372 GBP
$498 USD
View
Final sale: no returns
A
Retailer 3
-
£412 GBP
$552 USD
View
A
Retailer 4
-
£519 GBP
$695 USD
View
A
Retailer 5
-
£645 GBP
$864 USD
View
A
Retailer 6
-
£646 GBP
$866 USD
View
A
Retailer 7
-
£646 GBP
$866 USD
View
A
Retailer 8
-
£756 GBP
View
A
Retailer 9
-
£781 GBP
ZAR 16,912 ZAR
View
A
Retailer 10
-
£901 GBP
A$1,858 AUD
View
A
Retailer 11
-
£1,036 GBP
$1,388 USD
View
A
Retailer 12
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£1,059 GBP
A$2,182 AUD
View
A
Retailer 13
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£1,196 GBP
$1,602 USD
View
Retailer 14
-
£1,355 GBP
$1,816 USD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
£1,541 GBP
$2,065 USD
View
B+
Retailer 16
-
£1,569 GBP
$2,102 USD
View
B+
Retailer 17
-
£1,593 GBP
SGD 2,884 SGD
View
Retailer 18
-
£1,720 GBP
$2,305 USD
View
Price last confirmed 23 days ago
Retailer 19
-
£1,820 GBP
View
Price last confirmed 23 days ago
B+
Retailer 20
-
£1,851 GBP
$2,480 USD
View
Retailer 21
-
£1,889 GBP
A$3,894 AUD
View
Price last confirmed 22 days ago
B+
Retailer 22
-
£1,908 GBP
View
Most Expensive
B
Do Amore Diamonds
27-15F516BD4 · Oct 29
£2,948 GBP
$3,950 USD
View
22 more retailers have this diamond
Prices start from £332 GBPSave up to £2,616 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
£332 GBP