My dad and I always get either other little trinkets for problem-solving gifts so I decided to get this for him for Christmas. He LOVED it! We bring it out every holiday and try to do the puzzles together.
Beautiful, good sparkle in the stones. I bought them as a gift (my daughter-in-law's birthstone) and was tempted to keep them for myself! Shipping from Thailand was very fast, delivered in 7 days.