"A Black Onyx necklace is a true embodiment of sophistication and elegance. This gem necklace is handcrafted in 14k gold and features a rectangular Black Onyx gemstone in prongs. Everything about this yellow gold necklace is to love - it is versatile and totally wearable from day until evening. ♥ Gemstone Type - Black Onyx ♥ Gemstone Size - 13x18mm ♥ Gemstone Cut - Rectangle - More options available in the drop down menu ♥ Metal Type (Main Photo) - 14k Gold Filled - More options available in the Gold Jewelry With Rectangular Stone For Formal Occasions, Gold Jewelry With Rectangular Stone For Formal Events, Formal Gold Jewelry With Rectangular Stone, Luxury Gold Necklace With Rectangular Stone, Minimalist Formal Jewelry With Rectangular Pendant, Formal Minimalist Jewelry With Rectangular Pendant, Minimalist Rectangular Pendant Jewelry For Formal Occasions, Formal Necklace With Rectangular Gemstone Pendant, Formal Gemstone Necklace With Rectangular Pendant