Garnets differ extensively in chemical composition from each other. Rhodolite garnet is a combination of pyrope and almandine minerals, also know as pyrope-almandine garnet. The Almandite garnet is the most widely known. This beautiful green color ranges from light to very dark in appearance. Worn as a single large stone or a smaller one accented by diamonds or pearls, this rich green is very stunning in appearance.
Tourmaline comes in every color and is known for their hardness and durability.
Opal and Tourmaline are the birthstones for the month of October. Also, the United States national gemstone is tourmaline. Tourmaline is one of the most chemically complex gem materials. It is a very wearable stone that is brilliant and durable. Opal Most opals are found in Australia and are very soft by comparison.