From the short-lived Studio Range, this charger recalls a typical Muranese style. It came out very shortly after the Alchemy range, and just before the swirled stuff which was the last thing Dartington Studio did.
It went out of business because they were using old-fashioned, time-consuming methods and expensive colours - ie, using real gold to obtain ruby coloured glass.
I had one of these red-with-gold-foil inclusions chargers made for me, ordered via the Stuart Crystal Factory shop in Crieff circa '02. It cost £42.