help pass the statue in the crimson forest (Battle Chasers: Nightwar)

m.a.r.r.a.d.e.r.
sapphire Topaz ruby emerald

Where to find gems?I only have the option show stones(without specifics, are not listed as in the screenshot) and statue care about looks(just under the number 4 when option to show the stone is shiny greedy eyes) as a response to actions.

Maarginal
In the same room, on the walls, statues (gargoyles) hang. Stones at them. I also for the first time a stone could not be found. They are all there, look carefully.