The four families
Glass finials, the tiered spires of the European tradition, are the collector's topper: blown like ornaments, silvered like ornaments, and fragile like ornaments.
Stars are the American default, from tin and cardboard antiques to lit modern pieces.
Angels carry the oldest iconography, in everything from wax and spun glass to modern fabric.
Modern and smart toppers add motors and light shows; they are decorations first and collectibles rarely.

A cobalt spire from our shelves
A tiered blue glass finial, silvered inside, glitter at the base. Photographed as found, records still open on its origin.
Fitting a topper safely
The leader (the top vertical branch) does the work. Match the topper's socket depth to the leader's thickness, seat it straight down without forcing thin glass, and steady a heavy topper with florist wire to the branch below rather than trusting the socket alone. Artificial-tree leaders are stiffer than live ones and hold weight better; a live tree's leader tapers thin fast.
Vintage finials need ornament care
A vintage glass finial is structurally the most vulnerable piece in a collection: a long thin spire, a stressed socket, and yearly handling. Everything in our care guides applies double: dry dusting only (cleaning), a fitted padded box of its own (storage), and honest retirement to a display stand the year the socket starts to worry you.