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Marquise|Lab Grown|IGI

1.50ct G IF Marquise Lab Grown Diamond

EX • G/IF • IGI LG655444949

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG655444949

Diamond specifications and retailer prices

From £311 GBP
As of November 4, 2026
Save £1,352 GBP (81%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £1,663 GBP at With Clarity · As of November 5, 2026
View at With Clarity

About this 1.5ct lab-grown marquise diamond

This 1.5ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG655444949 or 655444949. Listed at 25 retailers as of November 4, 2026, with prices from £311 to £1,663, a £1,352 spread on the same certified stone. With Clarity lists it at £1,663. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
G
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655444949
Dimensions11.74 × 6.15 × 3.68 mm
L/W Ratio1.91
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
11.74 mm6.15 mm1.50 ctG / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655444949
Side View
Table 63.0%Crown 31.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.8%

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 4
Current: £628 GBP|Low: £298 GBP|High: £1,902 GBP|Avg: £885 GBP|-4.3%
Retailer 1
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With Clarity
November 5, 2026
Retailer 5£311 GBP
Retailer 4£348 GBP
Retailer 13£348 GBP
Retailer 8£385 GBP
Retailer 16£385 GBP
Retailer 22£418 GBP
Retailer 23£494 GBP
Retailer 20£526 GBP
Retailer 9£564 GBP
Retailer 2£612 GBP
Retailer 1£628 GBP
Retailer 18£663 GBP
Retailer 11£707 GBP
Retailer 3£889 GBP
Retailer 12£898 GBP
Retailer 15£1,222 GBP
Retailer 6£1,238 GBP
Retailer 10£1,262 GBP
Retailer 17£1,271 GBP
Retailer 14£1,404 GBP
Retailer 19£1,414 GBP
Retailer 7£1,441 GBP
Retailer 21£1,597 GBP
With Clarity£1,663 GBP

38 data points across 24 retailers

25 retailers£311 GBP to £1,663 GBP

A
Cheapest Retailer
-
£311 GBP
A
Retailer 2
-
£348 GBP
View
Final sale: no returns
A
Retailer 3
-
£348 GBP
View
Retailer 4
-
£385 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£385 GBP
View
A
Retailer 6
-
£418 GBP
View
A
Retailer 7
-
£494 GBP
View
A
Retailer 8
-
£526 GBP
View
A
Retailer 9
-
£564 GBP
View
Retailer 10
-
£612 GBP
View
Price last confirmed 11 days ago
A
Retailer 11
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£628 GBP
View
A
Retailer 12
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£663 GBP
View
A
Retailer 13
-
£707 GBP
View
A
Retailer 14
-
£889 GBP
View
A
Retailer 15
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£898 GBP
View
B+
Retailer 16
-
£1,222 GBP
View
B+
Retailer 17
-
£1,238 GBP
View
B+
Retailer 18
-
£1,262 GBP
View
B+
Retailer 19
-
£1,271 GBP
View
B+
Retailer 20
-
£1,343 GBP
View
B+
Retailer 21
-
£1,404 GBP
View
B+
Retailer 22
-
£1,414 GBP
View
B+
Retailer 23
-
£1,441 GBP
View
B+
Retailer 24
-
£1,597 GBP
View
Most Expensive
B
With Clarity
655444949 · Nov 5
£1,663 GBP
$2,238 USD
View
24 more retailers have this diamond
Prices start from £311 GBPSave up to £1,352 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
1.50ct Marquise
£311 GBP