The term “Tora silk” seems to refer to a silk‑(or silk‑blend) fabric used in sarees, typically lightweight with a nice drape.
It is often used in fashion/ready‑to‑wear or designer saree markets (rather than pure traditional handloom silks).
“Tora” may not correspond to a GI (Geographical Indication) or a specific weaving tradition; rather, it’s more of a commercial label describing texture, sheen or weight