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Marquise|Lab Grown|IGI

1.51ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG644456133

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG644456133

Diamond specifications and retailer prices

From £491 GBP
$658 USD
As of October 30, 2026
Save £1,877 GBP (79%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: £2,368 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct lab-grown marquise diamond

This 1.51ct 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 LG644456133 or 644456133. Listed at 30 retailers as of October 26, 2026, with prices from £491 to £2,368, a £1,877 spread on the same certified stone. MOH London lists it at £2,368. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644456133
Dimensions11.68 × 5.92 × 3.77 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizePointed
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
11.68 mm5.92 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644456133
Side View
Table 62.0%Crown 37.1°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.7%

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: £2,368 GBP|Low: £440 GBP|High: £2,481 GBP|Avg: £1,281 GBP|-4.6%
MOH London
Retailer 2
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Retailer 24
November 1, 2026
Retailer 11£440 GBP
Retailer 22£491 GBP
Retailer 10£545 GBP
Retailer 4£630 GBP
Retailer 24£642 GBP
Retailer 5£702 GBP
Retailer 16£770 GBP
Retailer 9£833 GBP
Retailer 20£836 GBP
Retailer 2£845 GBP
Retailer 21£936 GBP
Retailer 18£1,269 GBP
Retailer 12£1,289 GBP
Retailer 3£1,352 GBP
Retailer 17£1,638 GBP
Retailer 8£1,739 GBP
Retailer 7£1,763 GBP
Retailer 23£1,780 GBP
Retailer 13£1,798 GBP
Retailer 14£1,814 GBP
Retailer 6£1,816 GBP
Retailer 19£1,843 GBP
Retailer 15£1,904 GBP
MOH London£2,368 GBP

35 data points across 24 retailers

30 retailers£491 GBP to £2,368 GBP

Retailer 1
-
£440 GBP
$589 USD
Price last confirmed 24 days ago
Retailer 2
-
£455 GBP
$610 USD
View
Price last confirmed 33 days ago
A
Retailer 3
-
£491 GBP
$658 USD
View
Final sale: no returns
Retailer 4
-
£510 GBP
$683 USD
View
Price last confirmed 34 days ago
Retailer 5
-
£545 GBP
$730 USD
View
Price last confirmed 24 days ago
Retailer 6
-
£545 GBP
$730 USD
View
Price last confirmed 22 days ago
Retailer 7
-
£558 GBP
$747 USD
View
Price last confirmed 34 days ago
A
Retailer 8
-
£630 GBP
HK$6,600 HKD
View
A
Retailer 9
-
£642 GBP
$860 USD
View
A
Retailer 10
-
£702 GBP
$941 USD
View
A
Retailer 11
-
£770 GBP
$1,032 USD
View
A
Retailer 12
-
£833 GBP
$1,116 USD
View
A
Retailer 13
-
£836 GBP
€1,067 EUR
View
A
Retailer 14
-
£845 GBP
View
A
Retailer 15
-
£936 GBP
ZAR 20,264 ZAR
View
B+
Retailer 16
-
£1,269 GBP
A$2,616 AUD
View
Retailer 17
-
£1,289 GBP
$1,727 USD
View
Price last confirmed 9 days ago
B+
Retailer 18
-
£1,352 GBP
$1,811 USD
View
Retailer 19
-
£1,433 GBP
$1,920 USD
View
Price last confirmed 22 days ago
B+
Retailer 20
-
£1,433 GBP
$1,920 USD
View
Retailer 21
-
£1,485 GBP
$1,990 USD
View
Price last confirmed 32 days ago
B+
Retailer 22
-
£1,739 GBP
$2,330 USD
View
B+
Retailer 23
-
£1,763 GBP
$2,362 USD
View
B+
Retailer 24
-
£1,780 GBP
$2,385 USD
View
B+
Retailer 25
-
£1,798 GBP
A$3,707 AUD
View
B+
Retailer 26
-
£1,814 GBP
SGD 3,285 SGD
View
B+
Retailer 27
-
£1,816 GBP
$2,434 USD
View
B+
Retailer 28
-
£1,843 GBP
$2,470 USD
View
B
Retailer 29
-
£1,904 GBP
$2,551 USD
View
Most Expensive
B
MOH London
LG644456133 · Oct 26
£2,368 GBP
View
29 more retailers have this diamond
Prices start from £491 GBPSave up to £1,877 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
1.51ct Marquise
£491 GBP