Victorian pendant by Gebruder Feix of Albrechtice ?

This necklace was a part of the lot I bought online from Czech republic. The stones are black glass (cold to touch) - soldered onto a wirework frame, painted black (there are some chips). The pendant is approximately 6 cm long, the chain approximately 51 cm long.

Possibly, this could be a Czech work of Gebruder Feix of Albrechtice company from Gablonz ( todays Jablonec nad Nisou), as the pendant resembles these pieces, made by Gebruder Feix company:

https://www.worthpoint.com/worthopedia/victorian-antique-vtg-czech-jet-black-1754172669

https://www.ebay.com/itm/Victorian-Antique-Austrian-jet-black-glass-wirework-cameo-pendant-Gebruder-Feix-/163075685093

From internet:
This style of jewelry originated in the 1860's but had a resurgent period in 1901 after the death of Queen Victoria and had all but finished by 1903. The principal maker of this style of jewelry was Gebruder Feix of Albrechtice in the Jizera mountains.
Pendants made by Gebruder Feix can be found in The museum of glass and jewelry in Jablonec nad Nisou where there is a black costume jewelry exhibition.
Production of glass "jet" began in the Jablonec area in the 1860's. Originally, the pressed glass was bonded with resin on to a solid metal base. After 1877, Gebruder Feix patented the riveting of glass stones onto metal bases. However, the real revolution came in the 1880's when production began by tin-soldering glass stones with sealed metal tubes on to a wire base. The boom in black costume jewelry making in Czech continued until the turn of the century and by the 1920's had virtually gone out of fashion.

I would like to hear your opinion on this, as always :)