Our Brazilian Virgin Hair is naturally compatible with most hair types including African-American and Caucasian. Crystal and Diamond Collections are both 100% virgin human hair and has not been processed in any way, free of any hair color. The only difference is the donors for the Daimond hair never use hair products with chemicals like gel or shampoos with sulfur. Both are great quality but the diamond hair is the best hair on the market. Diamond hair can last up to a year with proper care and the Crystal hair can last up to 6 months with proper care. Real Human Hair. Brazilian Hair!