Talk:The Great Diamond Authority/@comment-32314328-20180207172057/@comment-32314328-20180207205135

It's a different thing. Quartz is like gropup, family or category and amethyst, rose quartz are types (also there are agates and jaspers which are more different, they have patterns and often are multicoloured) When they fuse, they make another type, smoky quartz. The same is with ruby and sapphire. But diamonds are just diamonds they are all allotrope of carbon. There aren't any types of diamonds, just colours.