I purchased these three stones with plans to return two of them and am having the hardest time deciding between them and would love your advice. I really like the round because it sparkles most but my jeweler friend said it was the most likely to show dirt and had the most uneven color (I personally cannot tell). My second favorite is the elongated cushion but it just isn't as sparkly as the round. Which would you go with? These are all taken indoors near a window but more shaded light. The video is taken in my bathroom