Some minerals are very rare and pretty — we call these gemstones and they are used to make jewellery Can you name any gemstones The most famous gemstone is the diamond which is the hardest mineral in the world
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This diagram shows the main groups of igneous rocks their main mineral constituents and their intrusive cooling in the crust and extrusive cooling as lava flow equivalents
Stoneridge Quarries are Perth s leaders in the provision of high quality natural reconstituted limestone blocks Call us on 08 9437 9120 or click here for more
This section does not cite any sources Please help improve this section by adding citations to reliable material may be challenged and removed December 2024 Learn how and when to remove this template message This tree lists various manufacturing processes arranged by similarity of