Onyx and Blue Apatite Sterling Silver Pendant: Unique Handmade Natural Gemstone JewelleryMade with love at Kacha Stones 27mm ~ 1 1 8" (chain sold separately) A truly unique pendant with a bright blue Apatite set in cream Onyx. Blue Apatite is celebrated for its vibrant, electrifying blue colour, which ranges from light pastels to deeper, more saturated shades, like this beautiful gemstone. High quality Blue Apatite like this exhibits excellent transparency and clarity, allowing light to pass through and create a brilliant play of colour.