Pendant Size(mm) :49x34mm Cow is a symbol of hard work Obsidian is a nice crystal gemstone,and bring positive energy to you , and benefit for health.obsidian is a lucky stone according to a legend Adjustable Necklace Length: 20''-28'' Natural Obsidian,for both Mens and Women.Give obsidian to the one you like, meaning no more crying, happiness. Perfect for birthdays, Valentine's Day, Mother's Day, Father's Day, Christmas, Thanksgiving or any occasion to gift to men, women, family, dear friends or just for yourself. The picture is only for your reference.Because it's stone, The stripes and colours of each item are different,You will receive the similar item as picture shown. Natural Obsidian Crystal Pendant Bead Necklace with Attractive pattern design,make you look more elegant. Suit for Mens and Womens.