What is this Gemstone please?

Hi friends, I have found a new gem . Although it looks deep dark red externally, but when focusing light source in to the gem,wonderful nice deep red color in the gem. deep blood red. Is it Ruby gem, Please help me to recognize this gemstone.20 Carats in weight.

The photo provided is not clear please upload clear picture so that I can help you to tell you what stone is that.

Will you upload the clear pictures of this stone.