Question

what are crystals ?
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Answer 1

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. ... Examples of large crystals include snowflakes, diamonds, and table salt.

Answer 2

• Atoms form crystals. Protons, neutrons, and electrons are the primary building components for atoms.
• The periodic table lists and arranges atoms by the number of protons they contain (increasing left to right across the rows).
• The names and symbols for the elements that make up the main jewels and give them colour should be familiar to you.
• Gemstones include elements that are quite prevalent in the earth's crust.