Opal is a suitable material for making various types of gemstones and jewelry due to its unique colors and patterns. Opal jewelry comes in many designs for people of all ages and genders to enjoy. While opal is a beautiful birthstone for October, it also makes a lovely gift for anyone due to its enchanting appearance in jewelry. However, opal is a fragile stone that can be scratched or cracked, so care must be taken when wearing opal jewelry.