Marquise|Lab Grown|IGI

1.55ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG597371452

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG597371452

Diamond specifications and retailer prices

From £666 GBP
$887 USD
As of October 23, 2026
Save £1,617 GBP (71%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: £3,642 GBP at Do Amore Diamonds · As of October 23, 2026
View at Do Amore Diamonds

About this 1.55ct lab-grown marquise diamond

This 1.55ct 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 LG597371452 or 597371452. Listed at 29 retailers as of October 23, 2026, with a 243% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG597371452
Dimensions11.78 × 6.02 × 3.81 mm
L/W Ratio1.96
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 mm6.02 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG597371452
Side View
Table 59.0%Crown 35.4°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 63.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 23
Current: £3,642 GBP|Low: £411 GBP|High: £3,642 GBP|Avg: £1,299 GBP
Do Amore Diamonds
Retailer 2
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Retailer 24
October 23, 2026
Retailer 10£411 GBP
Retailer 9£509 GBP
Retailer 24£514 GBP
Retailer 18£593 GBP
Retailer 8£666 GBP
Retailer 4£673 GBP
Retailer 2£702 GBP
Retailer 16£794 GBP
Retailer 22£858 GBP
Retailer 13£870 GBP
Retailer 20£957 GBP
Retailer 3£1,313 GBP
Retailer 19£1,316 GBP
Retailer 11£1,332 GBP
Retailer 15£1,637 GBP
Retailer 7£1,639 GBP
Retailer 23£1,690 GBP
Retailer 5£1,715 GBP
Retailer 12£1,879 GBP
Retailer 6£1,905 GBP
Retailer 14£2,022 GBP
Retailer 17£2,283 GBP
Retailer 21£2,453 GBP
Do Amore Diamonds£3,642 GBP

37 data points across 24 retailers

29 retailers£666 GBP to £2,283 GBP

Retailer 1
-
£411 GBP
$547 USD
Price last confirmed 21 days ago
Retailer 2
-
£426 GBP
$567 USD
View
Price last confirmed 30 days ago
Retailer 3
-
£477 GBP
$635 USD
View
Price last confirmed 31 days ago
Retailer 4
-
£509 GBP
$678 USD
View
Price last confirmed 21 days ago
Retailer 5
-
£509 GBP
$678 USD
View
Price last confirmed 19 days ago
Retailer 6
-
£521 GBP
$694 USD
View
Price last confirmed 31 days ago
Retailer 7
-
£593 GBP
$790 USD
View
Price last confirmed 6 days ago
A
Retailer 8
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£666 GBP
$887 USD
View
Retailer 9
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£673 GBP
$896 USD
View
Price last confirmed 8 days ago
A
Retailer 10
-
£702 GBP
HK$7,300 HKD
View
Retailer 11
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£794 GBP
$1,058 USD
View
Price last confirmed 9 days ago
Retailer 12
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£870 GBP
View
Price last confirmed 8 days ago
Retailer 13
-
£957 GBP
ZAR 20,586 ZAR
View
Price last confirmed 11 days ago
Retailer 14
-
£1,313 GBP
$1,749 USD
View
Price last confirmed 8 days ago
Retailer 15
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£1,316 GBP
A$2,697 AUD
View
Price last confirmed 9 days ago
Retailer 16
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£1,332 GBP
$1,773 USD
View
Price last confirmed 8 days ago
Retailer 17
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£1,478 GBP
$1,968 USD
View
Price last confirmed 19 days ago
Retailer 18
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£1,478 GBP
$1,968 USD
View
Price last confirmed 8 days ago
Retailer 19
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£1,532 GBP
$2,040 USD
View
Price last confirmed 29 days ago
Retailer 20
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£1,637 GBP
View
Price last confirmed 22 days ago
Retailer 21
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£1,639 GBP
$2,182 USD
View
Price last confirmed 7 days ago
Retailer 22
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£1,690 GBP
$2,250 USD
View
Price last confirmed 11 days ago
Retailer 23
-
£1,715 GBP
$2,284 USD
View
Price last confirmed 9 days ago
Retailer 24
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£1,879 GBP
A$3,850 AUD
View
Price last confirmed 22 days ago
Retailer 25
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£1,905 GBP
$2,536 USD
View
Price last confirmed 8 days ago
Retailer 26
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£2,022 GBP
SGD 3,639 SGD
View
Price last confirmed 9 days ago
B
Retailer 27
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£2,283 GBP
$3,040 USD
View
Retailer 28
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£2,453 GBP
View
Price last confirmed 8 days ago
Most Expensive
Do Amore Diamonds
27-5BC4DB09B · Oct 23
£3,642 GBP
$4,850 USD
View
Price last confirmed 7 days ago
28 more retailers have this diamond
Prices start from £666 GBPSave up to £1,617 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
1.55ct Marquise
£666 GBP