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Marquise|Lab Grown|IGI

1.55ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG802628607

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG802628607

Diamond specifications and retailer prices

From £193 GBP
$258 USD
As of November 1, 2026
Save £643 GBP (77%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £836 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG802628607 or 802628607. Listed at 4 retailers as of October 31, 2026, with prices from £193 to £836, a £643 spread on the same certified stone. Brilliant Earth lists it at £836. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG802628607
Dimensions11.84 × 5.90 × 3.82 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.84 mm5.90 mm1.55 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG802628607
Side View
Table 61.0%Crown 36.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 64.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £836 GBP|Low: £193 GBP|High: £1,067 GBP|Avg: £569 GBP|-21.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 4£193 GBP
Retailer 8£357 GBP
Retailer 9£359 GBP
Retailer 7£380 GBP
Retailer 5£399 GBP
Retailer 2£412 GBP
Retailer 11£637 GBP
Retailer 10£689 GBP
Retailer 6£755 GBP
Brilliant Earth£836 GBP
Retailer 3£934 GBP

36 data points across 11 retailers

4 retailers£193 GBP to £836 GBP

A
Cheapest Retailer
-
£193 GBP
$258 USD
Final sale: no returns
A
Retailer 2
-
£412 GBP
View
Retailer 3
-
£689 GBP
$923 USD
View
Price last confirmed 77 days ago
Most Expensive
B+
Brilliant Earth
19921177A · Oct 31
£836 GBP
$1,120 USD
View
3 more retailers have this diamond
Prices start from £193 GBPSave up to £643 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
£193 GBP