Spiral Crystal Cage

I have been looking for these everywhere and for years. It works well to insert your very own small gemstone or natural crystals. This particular product is strong and secure, so the stone doesn't ever fall out, but it's hard to see the actual stone from inside the cage, whilst wearing...I wonder what other contraptions like this you may have available to hold your very own crystal as a necklace. It is wonderful and it will suffice. In the future, i may be interested in purchasing a larger size cage for bigger stones. Thank you kindly & Bwell.