Vintage Swarovski. Gold foiled. A faceted, step-cut, long, narrow rectangle. Pointed back. Check out how old the packaging is for these. They were actually padded with cotton - don't see that any more! The orange highlights are a trick of the reflections - they are, in fact, ruby-red coloured. More inline with Swarovski's Light Siam than the colour they now call Ruby.
3mm x 10mm (6)