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Marquise|Lab Grown|IGI

1.56ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG744514300

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG744514300

Diamond specifications and retailer prices

From £389 GBP
$521 USD
As of October 30, 2026
Save £3,067 GBP (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,456 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 1.56ct lab-grown marquise diamond

This 1.56ct 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 LG744514300 or 744514300. Listed at 17 retailers as of October 30, 2026, with prices from £389 to £3,456, a £3,067 spread on the same certified stone. Do Amore Diamonds lists it at £3,456. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.56
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744514300
Dimensions11.78 × 11.78 × 6.11 mm
L/W Ratio1.00
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
11.78 mm11.78 mm1.56 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744514300
Side View
Table 58.0%Crown 35.8°Girdle: MED-STKPavilion 39°Culet: NoneDepth 60.7%

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: Oct 30
Current: £3,456 GBP|Low: £389 GBP|High: £3,657 GBP|Avg: £1,388 GBP|-5.5%
Do Amore Diamonds
Retailer 2
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Retailer 12
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Retailer 17
October 30, 2026
Retailer 14£389 GBP
Retailer 5£436 GBP
Retailer 9£479 GBP
Retailer 6£560 GBP
Retailer 8£681 GBP
Retailer 15£748 GBP
Retailer 11£831 GBP
Retailer 13£901 GBP
Retailer 2£1,240 GBP
Retailer 16£1,245 GBP
Retailer 4£1,372 GBP
Retailer 17£1,401 GBP
Retailer 3£1,683 GBP
Retailer 10£1,858 GBP
Retailer 7£1,862 GBP
Retailer 12£2,324 GBP
Do Amore Diamonds£3,456 GBP

32 data points across 17 retailers

17 retailers£389 GBP to £3,456 GBP

A
Cheapest Retailer
-
£389 GBP
$521 USD
A
Retailer 2
-
£436 GBP
$584 USD
View
A
Retailer 3
-
£479 GBP
$642 USD
View
Final sale: no returns
A
Retailer 4
-
£560 GBP
$750 USD
View
A
Retailer 5
-
£681 GBP
$913 USD
View
A
Retailer 6
-
£748 GBP
$1,002 USD
View
A
Retailer 7
-
£831 GBP
€1,060 EUR
View
A
Retailer 8
-
£901 GBP
A$1,858 AUD
View
A
Retailer 9
-
£1,240 GBP
A$2,557 AUD
View
B+
Retailer 10
-
£1,245 GBP
$1,668 USD
View
B+
Retailer 11
-
£1,372 GBP
$1,838 USD
View
B+
Retailer 12
-
£1,401 GBP
$1,877 USD
View
B+
Retailer 13
-
£1,683 GBP
$2,255 USD
View
B+
Retailer 14
-
£1,858 GBP
$2,490 USD
View
Retailer 15
-
£1,862 GBP
A$3,839 AUD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
£2,324 GBP
View
Most Expensive
B
Do Amore Diamonds
27-E9C5220D9 · Oct 30
£3,456 GBP
$4,630 USD
View
16 more retailers have this diamond
Prices start from £389 GBPSave up to £3,067 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
1.56ct Marquise
£389 GBP