Cold-process Soap Gemstones

I made this soap in February and have been told that it looks like a gemstone, something like malachite.

Since then I knew I had to make cold-process soap that would resemble gemstones. At first I picked onyx and here is my cold-process soap called Onyx:

 

After that I prepared a soap called Fordite and planned to submit it as my entry for the Soap Challenge, because I was using the spinning swirl technique to create it. But I changed my mind and decided to go with another entry. I haven't taken pictures of the fordite soap yet.