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Marquise|Lab Grown|IGI

3.77ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG787659712

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG787659712

Diamond specifications and retailer prices

From £1,573 GBP
CA$2,932 CAD
As of November 2, 2026
Save £697 GBP (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,270 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.77ct lab-grown marquise diamond

This 3.77ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG787659712 or 787659712. Listed at 2 retailers as of November 1, 2026, with prices from £1,573 to £2,270, a £697 spread on the same certified stone. The Diamond Guys lists it at £2,270. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.77
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787659712
Dimensions16.05 × 8.15 × 5.13 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.05 mm8.15 mm3.77 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787659712
Side View
Table 59.0%Crown 37.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: £1,573 GBP|Low: £596 GBP|High: £3,614 GBP|Avg: £1,712 GBP|+3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
The Diamond Guys
August 3, 2026
Retailer 6£604 GBP
Retailer 3£893 GBP
Retailer 5£894 GBP
Retailer 4£1,071 GBP
Retailer 1£1,573 GBP
The Diamond Guys£2,270 GBP
Retailer 2£2,629 GBP
Retailer 8£2,786 GBP
Retailer 7£3,614 GBP

20 data points across 9 retailers

2 retailers£1,573 GBP to £2,270 GBP

B+
Cheapest Retailer
-
£1,573 GBP
CA$2,932 CAD
Most Expensive
B
The Diamond Guys
1955241407 · Nov 1
£2,270 GBP
$3,046 USD
View
1 more retailer has this diamond
Prices start from £1,573 GBPSave up to £697 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+
3.77ct Marquise
£1,573 GBP