I wore my string theory tonight and noticed that the sparkle really shines in low light. In bright light, it's duller than I think single cut would be. I prefer seeing glittery sparkle in low light so this works for me! I imagine that the single cut would give broad flashes in bright light but would be duller in low light.thanks for the info!! in that case I think full cut is the way to go for me too. please do post if you get more. they are definitely made for stacking! I want to get at least two. heehee. [emoji6] are you thinking to get different colours?