Three words do most of the work on a statue listing — polystone, resin and PVC — and they are used loosely enough that collectors often cannot say what the difference is. It matters, because the material decides the weight, the detail, how the piece survives a fall, what it costs and how it should be cleaned. This is what each one actually is, in the studios' own words.
What is polystone?
Polystone is a composite: liquid polyurethane resin with powdered stone mixed in before it is poured into the mould. Sideshow's materials guide describes it as "a mixture of liquid plastic resin and powdered stone additive" that "retains a majority of original sculpt detail", and Prime 1 Studio calls it their primary material, chosen "for its weight and presence". The stone content is the point. It gives a cold, porcelain-like surface and a density that a hollow plastic cannot match, which is why a 1/4 Prime 1 piece — their Chainsaw Man "Power" at 66 cm, for example — is listed at 16.6 kg.
Polystone is also brittle. It does not bend, it chips, and a fall from a shelf is usually the end of a limb. That is the trade for the weight and the detail, and it is why studios ship large pieces in multiple boxes with the fragile elements packed separately.
What is resin, and how is it different?
In statue listings, "resin" nearly always means polyurethane resin without the stone filler. Sideshow's definition is that liquid urethane "slowly fills every crevice resulting in a near perfect replication of an original sculpt" — which is why resin is the material of kit-makers and garage sculptors, where fidelity to the master matters most. It is lighter than polystone, takes paint well, and is somewhat less brittle. Some studios use the words interchangeably; Iron Studios lists its Art Scale pieces as "made in polystone, hand painted" with automotive paint, while some European retailers describe the same pieces as resin. Neither is wrong, and the practical differences between the two are smaller than the differences between either and PVC.
What is PVC, and why is it cheaper?
PVC — polyvinyl chloride — is a thermoplastic, which means it is moulded hot under pressure rather than poured cold, and the moulds are steel rather than silicone. Sideshow's guide notes its hardness "can be adjusted" and calls it resilient "due to its elastic nature". That elasticity is the whole story: a PVC figure bends where a polystone one breaks, weighs a fraction as much, and can be produced in the thousands from one tool, which is where the price comes from. What it gives up is the crisp edge of a poured sculpt and the heft. PureArts' 1/8 Animus figures, in PVC, are listed at 0.8 kg for 28 cm; a 1/4 polystone piece from PCS is listed with a shipping weight of 15 kg. They are not the same kind of object, and they are not priced as the same kind of object.
What does "mixed media" mean on a listing?
Anything the studio has added to the base material. Sideshow's Premium Format line puts real fabric costumes on polystone bodies; Hot Toys' Movie Masterpiece Diecast figures add die-cast metal parts to an articulated plastic body; Prime 1 uses silicone for hair on some pieces, translucent resin for effects, and fabric capes on the larger Batmen. Cold-cast bronze, which you will see on some busts, is resin with bronze powder mixed in and polished — the look of a foundry casting without the foundry. Mixed media raises the realism and, usually, the care burden: fabric fades before paint, and silicone attracts dust.
How do you care for each material?
The studios agree on the basics. Sideshow's care page says to keep pieces out of direct sunlight and away from fireplaces, radiators and vents, in a temperature-controlled room, and to dust with a soft brush or microfibre cloth — a slightly damp cloth at most, never solvents, never submerged. Polystone in particular reacts badly to humidity swings and UV; the paint, not the stone, is what goes first. PVC tolerates more handling but softens in heat, so a PVC figure on a sunny windowsill will lean before a polystone one fades.
Why it matters if you are holding a reservation
When you reserve a piece months ahead, the material is one of the few things you can plan around before it arrives. A polystone centrepiece needs a shelf rated for its weight — our scale guide lists which IKEA cabinets can take one — a route from the front door, and a second pair of hands on delivery day. A PVC line can go on any shelf. If a listing says polystone and the price looks like PVC, ask the question before you reserve; we would rather answer it now than after the box arrives.
Sources
- A list of materials used in Sideshow items — Sideshow Collectibles — the studio's own definitions of polystone, resin and PVC.
- Prime 1 Statue — Prime 1 Studio — polystone as the primary material; the 16.6 kg weight is from the studio's Power listing.
- Care tips for your collectible — Sideshow Collectibles — sunlight, heat, humidity and cleaning.
- What is bronze resin? — Artifex — cold-cast bronze, from a UK sculpture supplier.
Every piece in Halidom's open editions shows its studio, scale and height on the card, and the material where the studio states it.