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Marquise|Lab Grown|IGI

1.51ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG800679051

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800679051

Diamond specifications and retailer prices

From £650 GBP
HK$6,800 HKD
As of November 1, 2026
Save £1,802 GBP (73%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,451 GBP at MOH London · As of November 1, 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 LG800679051 or 800679051. Listed at 12 retailers as of November 1, 2026, with prices from £650 to £2,451, a £1,802 spread on the same certified stone. MOH London lists it at £2,451. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800679051
Dimensions11.89 × 5.99 × 3.77 mm
L/W Ratio1.98
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
11.89 mm5.99 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800679051
Side View
Table 58.0%Crown 34.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
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 1
Current: £2,451 GBP|Low: £646 GBP|High: £2,484 GBP|Avg: £1,444 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7£650 GBP
Retailer 9£799 GBP
Retailer 11£838 GBP
Retailer 6£867 GBP
Retailer 2£877 GBP
Retailer 10£955 GBP
Retailer 12£1,339 GBP
Retailer 4£1,825 GBP
Retailer 8£1,830 GBP
Retailer 3£1,937 GBP
Retailer 5£1,963 GBP
MOH London£2,451 GBP

41 data points across 12 retailers

12 retailers£650 GBP to £2,451 GBP

A
Cheapest Retailer
-
£650 GBP
HK$6,800 HKD
A
Retailer 2
-
£799 GBP
$1,070 USD
View
A
Retailer 3
-
£838 GBP
$1,123 USD
View
A
Retailer 4
-
£867 GBP
€1,106 EUR
View
A
Retailer 5
-
£877 GBP
View
A
Retailer 6
-
£955 GBP
A$1,968 AUD
View
Retailer 7
-
£1,339 GBP
$1,794 USD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£1,825 GBP
$2,446 USD
View
Retailer 9
-
£1,830 GBP
A$3,773 AUD
View
Price last confirmed 24 days ago
B+
Retailer 10
-
£1,963 GBP
$2,630 USD
View
B
Retailer 11
-
£1,977 GBP
$2,649 USD
View
Most Expensive
B
MOH London
LG800679051 · Nov 1
£2,451 GBP
View
11 more retailers have this diamond
Prices start from £650 GBPSave up to £1,802 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
£650 GBP