Gold nugget is a mineral because of the characteristics it possesses. One it is a naturally occurring substance found in gold ore and has a specific gravity of around 15.5-19.3. Gold nugget has a specific color, which is yellow in color (Marshall, 50). Quartz is a mineral because it is naturally occurring in sedimentary rocks. Quartz has different colors but is mostly range from clear to it translucent color. Its luster is vitreous. Amber be classified a minerals because they a combination of tree resin and other natural occurring things such as plant and animal materials. It has a color range from yellow to orange and a specific gravity of 1.1.
Glacial ice forms due to a lot of icefall and slow melting during the summer hence it solidifies to a glacier. So a glacier can be categorized as a mineral formed by only one mineral and because of its defined formula and structure (Marshall, 60) Ruby is a mineral that is naturally occurring and is mined. Obsidian is a volcanic glass where it is pushed up as an extrusive igneous rock, so cannot be described as a mineral. Cubic zirconia is a mineral. It is synthetic in nature and was discovered in monoclinic