This collar fits away from your neck, so is very comfortable to wear despite it being made from larger stones. It becomes weightless while wearing it.
The set (before made into a necklace) is from DakotaStones and here is what they say about it: "Impression Jasper (a composite stone) comes in a variety of colors and possibly more names. The material comes with variety of tan and crimson matrix colors which create a striking contrast to any color it may be enhanced. It is used to find clarity and inner peace. Mined in Hubei China."