Marquise|Lab Grown|IGI

1.55ct G VS2 Marquise Lab Grown Diamond

EX • G/VS2 • IGI LG843670563

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843670563

Diamond specifications and retailer prices

From £179 GBP
$240 USD
As of November 1, 2026
Save £540 GBP (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,291 GBP at Brilliant Earth · As of October 12, 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 VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843670563 or 843670563. Listed at 4 retailers as of November 1, 2026, with a 301% 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
G
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843670563
Dimensions11.69 × 5.96 × 3.86 mm
L/W Ratio1.96
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.69 mm5.96 mm1.55 ctG / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843670563
Side View
Table 58.0%Crown 36.6°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £1,291 GBP|Low: £179 GBP|High: £1,291 GBP|Avg: £719 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 2£179 GBP
Retailer 4£271 GBP
Retailer 5£427 GBP
Retailer 3£719 GBP
Brilliant Earth£1,291 GBP

8 data points across 5 retailers

4 retailers£179 GBP to £719 GBP

A
Cheapest Retailer
-
£179 GBP
$240 USD
Final sale: no returns
B+
Retailer 2
-
£271 GBP
$363 USD
View
B+
Retailer 3
-
£719 GBP
$963 USD
View
Most Expensive
Brilliant Earth
21760005A · Oct 12
£1,291 GBP
$1,730 USD
View
Price last confirmed 20 days ago
3 more retailers have this diamond
Prices start from £179 GBPSave up to £540 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
£179 GBP