what are precious stones
Precious stones are defined as visually appealing gemstones created from rocks or minerals. Often used for jewelry and fashion accents, this term was created in the mid-1800âs to refer to four specific stones; diamonds, rubies, emeralds, and sapphires.iamonds, rubies, sapphires, emeralds were classified as precious stones. All other stones are classified as semi-precious stones. The distinction between precious and semi-precious stones are their rarity and their quality.