Sterling Silver .925 Moonstone Large Pendant Slide

Sterling Silver .925 Moonstone Large Pendant Older pendant approx 20 years. I believe it to be moonstone but could light labradorite(both are in the same family). Sterling silver setting. The edge of the half moon bottom is bent and has always been. If troublesome a jeweler maybe able to minimize it. Bail is large enough to fit most large chains and medium size collars. Stone has beautiful blue flash shining through the milky whips inclusions. What looks like a stone break is not and is an internal inclusion. Top of stone is smooth with a high polish.