Marquise|Lab Grown|IGI

1.55ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG812621506

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812621506

Diamond specifications and retailer prices

From £516 GBP
$692 USD
As of October 30, 2026
Save £1,979 GBP (79%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £2,496 GBP at MOH London · As of October 29, 2026
View at MOH London

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 LG812621506 or 812621506. Listed at 25 retailers as of October 29, 2026, with prices from £516 to £2,496, a £1,979 spread on the same certified stone. MOH London lists it at £2,496. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812621506
Dimensions11.73 × 6.06 × 3.71 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
11.73 mm6.06 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812621506
Side View
Table 61.0%Crown 34.6°Girdle: MediumPavilion 39.7°Culet: NoneDepth 61.2%

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: £2,496 GBP|Low: £447 GBP|High: £2,496 GBP|Avg: £1,168 GBP|+9.7%
MOH London
Retailer 2
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Retailer 21
October 31, 2026
Retailer 9£466 GBP
Retailer 21£516 GBP
Retailer 10£578 GBP
Retailer 11£578 GBP
Retailer 18£668 GBP
Retailer 4£784 GBP
Retailer 3£805 GBP
Retailer 19£876 GBP
Retailer 6£878 GBP
Retailer 15£896 GBP
Retailer 16£983 GBP
Retailer 2£1,332 GBP
Retailer 12£1,365 GBP
Retailer 8£1,380 GBP
Retailer 14£1,683 GBP
Retailer 20£1,723 GBP
Retailer 7£1,806 GBP
Retailer 5£1,847 GBP
Retailer 17£1,886 GBP
Retailer 13£2,090 GBP
MOH London£2,496 GBP

40 data points across 21 retailers

25 retailers£516 GBP to £2,496 GBP

Retailer 1
-
£466 GBP
$624 USD
Price last confirmed 22 days ago
A
Retailer 2
-
£516 GBP
$692 USD
View
Final sale: no returns
Retailer 3
-
£522 GBP
$699 USD
View
Price last confirmed 31 days ago
Retailer 4
-
£570 GBP
$764 USD
View
Price last confirmed 35 days ago
Retailer 5
-
£578 GBP
$774 USD
View
Price last confirmed 27 days ago
Retailer 6
-
£578 GBP
$774 USD
View
Price last confirmed 18 days ago
A
Retailer 7
-
£668 GBP
$895 USD
View
A
Retailer 8
-
£784 GBP
$1,050 USD
View
A
Retailer 9
-
£805 GBP
$1,078 USD
View
A
Retailer 10
-
£876 GBP
$1,174 USD
View
A
Retailer 11
-
£878 GBP
€1,120 EUR
View
A
Retailer 12
-
£896 GBP
View
A
Retailer 13
-
£983 GBP
ZAR 21,272 ZAR
View
Retailer 14
-
£1,332 GBP
A$2,746 AUD
View
B+
Retailer 15
-
£1,365 GBP
$1,829 USD
View
B+
Retailer 16
-
£1,380 GBP
$1,849 USD
View
Retailer 17
-
£1,519 GBP
$2,035 USD
View
Price last confirmed 30 days ago
Retailer 18
-
£1,683 GBP
View
Price last confirmed 19 days ago
B+
Retailer 19
-
£1,723 GBP
$2,308 USD
View
B+
Retailer 20
-
£1,806 GBP
$2,420 USD
View
B+
Retailer 21
-
£1,843 GBP
$2,469 USD
View
B+
Retailer 22
-
£1,847 GBP
$2,475 USD
View
B+
Retailer 23
-
£1,886 GBP
$2,527 USD
View
B+
Retailer 24
-
£2,090 GBP
$2,800 USD
View
Most Expensive
B
MOH London
LG812621506 · Oct 29
£2,496 GBP
View
24 more retailers have this diamond
Prices start from £516 GBPSave up to £1,979 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
£516 GBP