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Marquise|Lab Grown|IGI

1.86ct G VVS1 Marquise Lab Grown Diamond

EX • G/VVS1 • IGI LG850691819

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG850691819

Diamond specifications and retailer prices

From £470 GBP
As of November 2, 2026
Save £968 GBP (67%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,438 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 1.86ct lab-grown marquise diamond

This 1.86ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG850691819 or 850691819. Listed at 2 retailers as of November 1, 2026, with prices from £470 to £1,438, a £968 spread on the same certified stone. Rare Carat lists it at £1,438. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
G
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850691819
Dimensions12.34 × 6.57 × 4.11 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.34 mm6.57 mm1.86 ctG / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850691819
Side View
Table 59.0%Crown 34.7°Girdle: THN-MEDPavilion 41.1°Culet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: £1,438 GBP|Low: £470 GBP|High: £1,438 GBP|Avg: £955 GBP
Rare Carat
Retailer 2
November 2, 2026
Retailer 2£470 GBP
Rare Carat£1,438 GBP

2 data points across 2 retailers

2 retailers£470 GBP to £1,438 GBP

A
Cheapest Retailer
-
£470 GBP
Most Expensive
B
Rare Carat
850691819 · Nov 1
£1,438 GBP
$1,930 USD
View
1 more retailer has this diamond
Prices start from £470 GBPSave up to £968 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
1.86ct Marquise
£470 GBP