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Marquise|Lab Grown|IGI

1.86ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG842613609

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG842613609

Diamond specifications and retailer prices

From £206 GBP
$276 USD
As of November 1, 2026
Save £927 GBP (82%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,133 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG842613609 or 842613609. Listed at 4 retailers as of November 1, 2026, with prices from £206 to £1,133, a £927 spread on the same certified stone. Brilliant Earth lists it at £1,133. 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842613609
Dimensions12.62 × 6.35 × 4.05 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.62 mm6.35 mm1.86 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842613609
Side View
Table 56.0%Crown 35.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £1,133 GBP|Low: £206 GBP|High: £1,192 GBP|Avg: £726 GBP|-5.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4£206 GBP
Retailer 2£446 GBP
Retailer 3£1,002 GBP
Brilliant Earth£1,133 GBP

25 data points across 4 retailers

4 retailers£206 GBP to £1,133 GBP

A
Cheapest Retailer
-
£206 GBP
$276 USD
Final sale: no returns
A
Retailer 2
-
£446 GBP
View
Retailer 3
-
£1,002 GBP
$1,345 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
21704357A · Nov 2
£1,133 GBP
$1,520 USD
View
3 more retailers have this diamond
Prices start from £206 GBPSave up to £927 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
£206 GBP