This is lithium-included rose quartz, rare and from a long-closed California mine. How it sits up unaided in the first photo must simply be its' special brand of yin/yang, but it will do it at your place, too.
2-1/2" thick x5" x6-1/2", its' coloring ranges from the palest lilac to deep, gemmy lavender from which many jewelry quality stones might be cut. Large rainbows, light iron oxide surface graphics, lovely translucence. Not quite as dimpled as the top photo, the lower photo is on our computer what you'll see in person.
Each One The Only One.tm