Search:

It's impossible to tell based on a description and photo, as there are all kinds of green stones with all kinds of properties that look like a lot like that - try asking someone who's been sold...

Just names for sure - people don't make hones out of actual ruby.

Update: The "Onyx" and "Ruby" look synthetic to me and just coloured that way, but the "Agate" and "Green stone" look natural.