Flower Vase Large Size11.8 inch Phoenix Tail Shape Thickened Crystal Glass for Home Decor, Wedding or Gift

Is this genuine crystal?

When washing this vase, the color doesnt come off, does it?

Can someone tell me if this is stzble standing upside down? I want to use as a pedestal to display some murano glass?

The colors in the picture look kind of light. Are they strong enough in the vase to be readily visible and make an impression?