The scientific definition of a "crystal" is based on the microscopic arrangement of atoms inside it, called the crystal structure. A crystal is a solid where the atoms form a periodic arrangement. (Quasicrystals …

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Read in-depth descriptions, planets, zodiacs, healing properties and more with each crystal. Detailed crystal properties.

Apr 17, 2026 · Crystal, any solid material in which the component atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Crystals are classified in general …

Mar 28, 2020 · A crystal is a solid material in which atoms, ions, or molecules are arranged in a highly ordered and repeating three-dimensional pattern, known as a crystal lattice.

The Crystal Encyclopedia is the definitive guide to crystals, stones, and minerals. Find everything you've ever wanted to know about crystals!

Dec 19, 2024 · What is a Crystal? Learn the scientific definition of crystal used by gemologists and answer some basic questions about what is and is not a crystal.

There are thousands of types of crystals. Below is an alphabetical list of crystals along with pictures and a short description of each crystal type.

Crystals 101: Learn crystals and their meanings in this beginner’s guide. Discover how to choose, cleanse, and use crystals. Shop authentic crystals at Crystals.com.