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Marquise|Lab Grown|IGI

1.51ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG629494686

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG629494686

Diamond specifications and retailer prices

From £548 GBP
$734 USD
As of November 1, 2026
Save £1,829 GBP (77%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: £2,377 GBP at MOH London · As of October 29, 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 LG629494686 or 629494686. Listed at 31 retailers as of October 29, 2026, with prices from £548 to £2,377, a £1,829 spread on the same certified stone. MOH London lists it at £2,377. 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 angle34.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629494686
Dimensions11.96 × 5.99 × 3.65 mm
L/W Ratio2.00
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
11.96 mm5.99 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629494686
Side View
Table 60.0%Crown 34.9°Girdle: STK-THKPavilion 39.1°Culet: NoneDepth 60.9%

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: Nov 1
Current: £2,377 GBP|Low: £440 GBP|High: £2,393 GBP|Avg: £1,245 GBP|-0.4%
MOH London
Retailer 2
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Retailer 24
November 1, 2026
Retailer 12£440 GBP
Retailer 11£545 GBP
Retailer 2£548 GBP
Retailer 5£630 GBP
Retailer 3£642 GBP
Retailer 6£702 GBP
Retailer 17£770 GBP
Retailer 10£833 GBP
Retailer 21£836 GBP
Retailer 13£845 GBP
Retailer 23£936 GBP
Retailer 22£955 GBP
Retailer 19£1,269 GBP
Retailer 14£1,289 GBP
Retailer 4£1,352 GBP
Retailer 9£1,739 GBP
Retailer 8£1,763 GBP
Retailer 24£1,780 GBP
Retailer 18£1,798 GBP
Retailer 15£1,814 GBP
Retailer 7£1,816 GBP
Retailer 20£1,881 GBP
Retailer 16£1,904 GBP
MOH London£2,377 GBP

31 data points across 24 retailers

31 retailers£548 GBP to £2,377 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
Retailer 3
-
£510 GBP
$683 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£545 GBP
$730 USD
View
Price last confirmed 24 days ago
Retailer 5
-
£545 GBP
$730 USD
View
Price last confirmed 22 days ago
A
Retailer 6
-
£548 GBP
$734 USD
View
Final sale: no returns
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
A
Retailer 16
-
£955 GBP
A$1,968 AUD
View
B+
Retailer 17
-
£1,269 GBP
A$2,616 AUD
View
Retailer 18
-
£1,289 GBP
$1,727 USD
View
Price last confirmed 9 days ago
B+
Retailer 19
-
£1,352 GBP
$1,811 USD
View
Retailer 20
-
£1,433 GBP
$1,920 USD
View
Price last confirmed 22 days ago
B+
Retailer 21
-
£1,433 GBP
$1,920 USD
View
Retailer 22
-
£1,485 GBP
$1,990 USD
View
Price last confirmed 32 days ago
B+
Retailer 23
-
£1,739 GBP
$2,330 USD
View
B+
Retailer 24
-
£1,763 GBP
$2,362 USD
View
B+
Retailer 25
-
£1,780 GBP
$2,385 USD
View
B+
Retailer 26
-
£1,798 GBP
A$3,707 AUD
View
B+
Retailer 27
-
£1,814 GBP
SGD 3,285 SGD
View
B+
Retailer 28
-
£1,816 GBP
$2,434 USD
View
B+
Retailer 29
-
£1,881 GBP
$2,520 USD
View
B
Retailer 30
-
£1,904 GBP
$2,551 USD
View
Most Expensive
B
MOH London
LG629494686 · Oct 29
£2,377 GBP
View
30 more retailers have this diamond
Prices start from £548 GBPSave up to £1,829 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
£548 GBP