How do you know if a button is vegetable ivory?

To determine if a button is made of vegetable ivory, also known as tagua, you can look for a few key characteristics. Vegetable ivory is typically lighter than genuine ivory and has a smooth, glossy finish with a natural grain pattern. It can be identified by its slightly translucent appearance and a softer feel compared to animal ivory. Additionally, if the button is marked or labeled, it may specifically state that it's made from tagua or vegetable ivory.