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Marquise|Lab Grown|IGI

1.51ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG815626977

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG815626977

Diamond specifications and retailer prices

From £319 GBP
$428 USD
As of October 27, 2026
Save £2,517 GBP (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,836 GBP at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

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 LG815626977 or 815626977. Listed at 15 retailers as of October 27, 2026, with prices from £319 to £2,836, a £2,517 spread on the same certified stone. Do Amore Diamonds lists it at £2,836. 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 angle34.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815626977
Dimensions12.16 × 5.88 × 3.65 mm
L/W Ratio2.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.16 mm5.88 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815626977
Side View
Table 62.0%Crown 34.5°Girdle: Slightly ThickPavilion 39.8°Culet: NoneDepth 62.1%

Caratlytics Score

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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 27
Current: £2,836 GBP|Low: £319 GBP|High: £4,381 GBP|Avg: £1,429 GBP|-35.3%
Do Amore Diamonds
Retailer 2
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Retailer 7
Retailer 8
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Retailer 11
Retailer 12
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Retailer 16
October 29, 2026
Retailer 16£319 GBP
Retailer 11£357 GBP
Retailer 15£374 GBP
Retailer 9£474 GBP
Retailer 5£514 GBP
Retailer 4£533 GBP
Retailer 2£649 GBP
Retailer 14£1,014 GBP
Retailer 12£1,026 GBP
Retailer 7£1,172 GBP
Retailer 13£1,405 GBP
Retailer 6£1,528 GBP
Retailer 10£1,608 GBP
Retailer 3£1,668 GBP
Retailer 8£2,217 GBP
Do Amore Diamonds£2,836 GBP

32 data points across 16 retailers

15 retailers£319 GBP to £2,836 GBP

A
Cheapest Retailer
-
£319 GBP
$428 USD
Retailer 2
-
£357 GBP
$479 USD
View
Price last confirmed 8 days ago
Retailer 3
-
£474 GBP
$635 USD
View
Price last confirmed 5 days ago
A
Retailer 4
-
£514 GBP
$689 USD
View
A
Retailer 5
-
£533 GBP
$714 USD
View
A
Retailer 6
-
£649 GBP
€828 EUR
View
A
Retailer 7
-
£1,014 GBP
$1,359 USD
View
Retailer 8
-
£1,026 GBP
A$2,115 AUD
View
Price last confirmed 13 days ago
A
Retailer 9
-
£1,172 GBP
$1,571 USD
View
Retailer 10
-
£1,405 GBP
$1,883 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
£1,528 GBP
$2,047 USD
View
B+
Retailer 12
-
£1,608 GBP
View
B+
Retailer 13
-
£1,668 GBP
$2,235 USD
View
B
Retailer 14
-
£2,217 GBP
$2,970 USD
View
Most Expensive
B
Do Amore Diamonds
27-C656D2C57 · Oct 28
£2,836 GBP
$3,800 USD
View
14 more retailers have this diamond
Prices start from £319 GBPSave up to £2,517 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
£319 GBP