Thread:Lockhqu/@comment-1398428-20170830221914/@comment-1398428-20170830235601

Myself 123 wrote: The shape on Infinite's chest has three triangle faces that join together to make a point. The Phantom Ruby is a icosahedron, which has points made from five triangle faces. Unless the Phantom Ruby changes shape, it cannot be what's on Infinite's chest, even if it's embedded into him.

Indeed, and they're all "silver" plated triangle, which is hardly any connected to Phantom Ruby, which is, well, "ruby" or hot lavender color. The picture I posted above was a reflect from his "Mysterious Cube Power" when he positioned like that.

And you perhaps forgot about size as well - Knuckles can shrink Master Emerald as seen in Sonic Adventure 2.