A gemstone or gem (also called a fine gem, jewel, or a precious or semi-precious stone) is a piece of mineral crystal, which, in cut and polished form, is used to make jewelry or other adornments.ven the same gemstone can occur in many different colors: sapphires show different shades of blue and pink and fancy sapphires exhibit a whole range of other colors from yellow to orange-pink, the latter called  padparadscha sapphire .
The definition of tarry is of, looking like or covering in tar. An example of something tarry is a creature that has just crawled out of a tar-filled pit. Tarry is defined as to delay, be late or wait. An example of to tarry is to be 20 minutes late to a wedding ceremony.
The definition of leery is  someone or something expressing caution and suspicion. When someone has lied to you before and you are cautious and unsure of whether you can trust him again, this is an example of a situation where you are leery. YourDictionary definition and usage example.