23 ct. Mystery Lot of Gemstones!

This is a lot of 5 untested gemstones, some of which are natural, earth mined stones. The following is what I can tell you about these stones: 1.) 3 ct. natural 9 x 12mm pale yellow, transparent, VS1, oval gemstone. This is a natural stone, but I'm uncertain as to it's actual identity. Some likely possibilities are imperial topaz, pale yellow sapphire, pale yellow zircon, pale yellow tourmaline, pale yellow scapolite, pale yellow kunzite, lemon quartz. 2.) 7.5 ct. natural 10 x 12mm, pinkish red, oval; semi transparent (heavily included); SI2. It is quite possibly a ruby, rubellite tourmaline, spinel, or a sapphire, but there are also, several, other possibilities. 3.) 1 ct. 6 x 8 oval cut, opaque purple cabochon. It appears to be a natural stone since it does have a few inclusions. It's most likely purple chalcedony. 4.) 7 ct., 11 x 13mm opalite, which is synthetic opalescent glass. 5.) 4ct. flawless, colorless, 10mm princess cut; most likely a cz or glass. Please feel free to ask questions.