Silver bar

A Silver bar is a bar of refined silver ore. It can be created through the Smithing skill by using a silver ore on a furnace. A silver bar can be smelted in a furnace into different shapes through the Crafting skill. Some of those shapes are tiaras, unholy symbols, holy symbols, and silver sickles.

Requirements to make the shapes.
You don't need any moulds to make these items, just use the bar on the furnace and it will give you a variety of things to choose from. Silver Sickles can be wielded as weapons, but they are not very effective in combat.
 * Tiara requires 23 Crafting to make and can be used for designing outfits and Runecrafting.
 * Unholy symbol requires 17 Crafting  to make.
 * Holy symbol requires 16 Crafting to make.
 * Silver sickles require 18 Crafting to make.