I have been looking for awhile for a really good fake Malachite Stalactite specimen on eBay to show you, however, I haven’t seen any on eBay in a long time. A good thing too!
But Mike from Geological Desires showed me a fantastic fake specimen…
What they do is take some powdered Malachite and spray it onto some plasterized Malachite Stalactite base. When you hit it with the UV light you can see all the glue glowing bright yellow/orange in the background.
So, when you see a Malachite Stalactite specimen, check it out for the powdered Malachite surface and check it out with a UV light first to see if the glue stands out!