Infusers are stainless steel and measure 2" in diameter with a 3.5" chain. Perfect for a single serving of tea (great for a 16 oz mug or pot). Rose Quartz: unconditional love, self love, peace, happiness. Natural Quartz: spirituality, protection, healing, psychic ability, power. Green Aventurine: opportunity, eyesight, general luck, money, healing. Amethyst: meditative, dreams, psychic ability, protection, courage, happiness. Tigereye: grounding, prosperity, energy, luck, divination.