Apatite is a gorgeous stone and with this Sterling Silver setting, it's gorgeous. The chain with the big circles...well, to show you how expensive Sterling Silver is now, one foot of that chain costs $100.00. The cost of Sterling is so high right now.   But, I thought I would add that chain into the mix anyway. It's gorgeous. Blue Agate stones are wire-wrapped throughout the chain with Sterling Silver bead caps and Swarovski Crystals, too. You can adjust the length also. It's 21 inches in length, but make it shorter if you wish. It's soooo pretty. You can find this stone in Brazil, Mexico and Madagascar.