The main three tests to find the genuineness of the stone1. Perform a rub test. 2. Weight and price test. 3. Compare the color and shine of your ruby. Nowadays the market is full of fake loose gemstones including rubies made of different types of materials. Hence, you need to be cautious while planning to shop for wholesale ruby gemstones.
Source: https://rashiratanbhagya.com/blog/post/how-to-know-ruby-real-or-fake/