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Marquise|Lab Grown|IGI

1.55ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG784639705

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784639705

Diamond specifications and retailer prices

From £706 GBP
CA$1,315 CAD
As of October 30, 2026
Save £228 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £934 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

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 LG784639705 or 784639705. Listed at 2 retailers as of October 30, 2026, with prices from £706 to £934, a £228 spread on the same certified stone. The Diamond Guys lists it at £934. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784639705
Dimensions11.51 × 6.10 × 3.88 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.51 mm6.10 mm1.55 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784639705
Side View
Table 61.0%Crown 37.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: £706 GBP|Low: £143 GBP|High: £1,746 GBP|Avg: £707 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4£324 GBP
Retailer 7£357 GBP
Retailer 10£469 GBP
Retailer 5£496 GBP
Retailer 2£499 GBP
Retailer 8£637 GBP
Retailer 1£706 GBP
Retailer 3£724 GBP
Retailer 9£898 GBP
The Diamond Guys£934 GBP
Retailer 12£969 GBP
Retailer 6£1,051 GBP
Retailer 11£1,687 GBP

35 data points across 13 retailers

2 retailers£706 GBP to £934 GBP

B
Cheapest Retailer
-
£706 GBP
CA$1,315 CAD
Most Expensive
B
The Diamond Guys
1952043952 · Nov 1
£934 GBP
$1,252 USD
View
1 more retailer has this diamond
Prices start from £706 GBPSave up to £228 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.

B
1.55ct Marquise
£706 GBP