Excel Clear Quartz Reiki Healing Crystal Angel - 4 Inch Quartz Crystal Angel : Size 4 and Weight : up to 200 Grams. Approx. Inch approx.from Excel International. Angels, Crystals and Reiki are a perfect combination, enhancing the natural healing properties of each. Stone Name : Natural Clear Crystal Stone. crystal properties are listed for information purposes. Crystal and Reiki healing can be used safely with other treatments, including orthodox medicine. They are considered complementary to, but do not replace, the diagnosis and medical care given by your doctor. These crystal angels originate from natural raw crystal, and therefore may have some small imperfections.