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Marquise|Lab Grown|IGI

3.77ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG812603492

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812603492

Diamond specifications and retailer prices

From £429 GBP
$576 USD
As of November 1, 2026
Save £1,948 GBP (82%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,377 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

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 LG812603492 or 812603492. Listed at 3 retailers as of October 28, 2026, with prices from £429 to £2,377, a £1,948 spread on the same certified stone. Rare Carat lists it at £2,377. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812603492
Dimensions15.84 × 8.16 × 5.12 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.84 mm8.16 mm3.77 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812603492
Side View
Table 62.0%Crown 37.1°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £2,377 GBP|Low: £425 GBP|High: £2,400 GBP|Avg: £966 GBP|-0.9%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 3£429 GBP
Retailer 4£578 GBP
Retailer 5£718 GBP
Retailer 2£757 GBP
Rare Carat£2,377 GBP

38 data points across 5 retailers

3 retailers£429 GBP to £2,377 GBP

A
Cheapest Retailer
-
£429 GBP
$576 USD
Final sale: no returns
A
Retailer 2
-
£757 GBP
View
Most Expensive
B
Rare Carat
812603492 · Oct 28
£2,377 GBP
$3,190 USD
View
2 more retailers have this diamond
Prices start from £429 GBPSave up to £1,948 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
3.77ct Marquise
£429 GBP