This pretty design by Shaesby is available in a fairly wide choice of stones. Here, it is shown (I think!) with Labradorite and an attached chain, and other elements in 14k yellow gold, accented with a small .02 carat diamond.

It sells for USD$790 but different configurations (including 18k gold and sterling silver, with a choice of different semi-precious stones) are likely priced differently as well.