Size details(approx):(length x width x thickness) 2"x1.2"x0.4"(51x30x10mm)hole diameter is about 9x6mm weight(approx): 11-12 gram/pcchain length:23 inches metal: copperquantity:1pc (comes with 1 free chains as gift). the pendant use the high quality copper and natural stoneall materials are nickle/lead freehypoallergenic. each pendant is handmadeso please allow slight variations from the shape of the branches and placement of the stones as shown. tree of life and copper wire wrapped design make the pendant looks elegant and tastefulgreat for birthdaypartybusiness activities.pendant come with a velvet pouch.best gift for family or friends. the tree of life is a universal symbol found in many spiritual traditions around the worldconnecting to heaven and the underworld and connecting all forms of creation are both forms of the world tree or cosmic tree. it's meaning represents life itself wisdom love strength protection beauty bounty and redemption. the tree is associated with the creator because it provides protection supports abundant fruit production and thereby regeneration. essential oil diffuser necklace: put 1-3 drops of your favorite essential oils onto the lava rock stone the faint scents will emit and last for a very long time make yourself more attractive and fascinating.