Historically, the ornamental bindi spangle consists of a small piece of lac over which is smeared vermilion, while above it a piece of mica or thin glass is fixed for ornament. Women wore large spangles set in gold with a border of jewels if they could afford it. The bindi was made and sold by lac workers known as Lakhera. In Hinduism, it's part of the "Suhāg" or "lucky trousseau" at marriages and is affixed to the girl's forehead on her wedding and thereafter always worn. Unmarried girls optionally wore small ornamental spangles on their foreheads. A widow was not allowed to wear bindi or any ornamentation associated with married women. In modern times, self-adhesive bindis are available in various materials, usually made of felt or thin metal and adhesive on the other side. These are simple to apply, disposable substitutes for older lac tikli bindis. Sticker bindis come in many colours, designs, materials, and sizes.