My raw black tourmaline crystal nugget bracelet has been carefully handcrafted in sterling silver.About black tourmaline: - Tourmaline is a multicoloured gemstone. - Is it thought to have gained all its colours from traveling along a rainbow. - t is used as a talisman to protect against all types of dangers. - It is thought to strengthen the body and spirit. - It is the birthstone of October and Zodiac Stone of Leo (23rd July- 23-August).Crystals have inclusions, which appear naturally in gemstones. Sometimes they can be accidentally mistaken as cracks, but they're actually minerals that have been trapped within the crystal as it has grown. Inclusions are perfectly natural and make each individual crystal unique. They're part of the crystal's natural beauty and history. It features a fairly small raw crystal, approximately 1/4 to 3/8 (6-10mm), that has been securely wire-wrapped to the chain. Tourmaline is a multicoloured gemstone, is the birthstone of October Fastens with a lobster clasp & has an extender chain giving it an adjustable fit between 6-8 inches wide Designed & handmade with love using genuine gemstones & crystals Packaged in a beautiful jewelry gift box along with a fact card telling you all about the crystal & its meaning ASIN B07P9LP1S7 Size 8 inches Color black Style Chain Gem Type Tourmaline Material Crystal Brand Name Luna Tide Chain Type Cable Chain Clasp Type Spring Ring Metal Type Sterling Silver Unit Count 1 Count Metal Stamp 925