Quartz

What causes some quartz crystals to have rainbow reflections inside?

Rainbow inclusions, also known as rainbows or iris phenomena, are caused by tiny internal fractures within the crystal that reflect light in spectacular ways. These natural features occur during the crystal's formation and are highly prized by collectors. Not all quartz crystals will display rainbows, and their appearance can vary depending on the lighting conditions and viewing angle. These internal rainbows are completely natural and serve as an indicator of the crystal's authenticity.

How do I clean and clear my quartz crystal?

Quartz is quite durable (7 on the Mohs scale) and can be safely cleaned in several ways. For physical cleaning, use warm water and mild soap, scrubbing gently with a soft brush to remove any debris, then rinse thoroughly and dry with a soft cloth. For energetic clearing, many practitioners use methods such as moonlight exposure, smudging with sage, burying in the earth, or sound healing. Sunlight can also be used for brief periods, though prolonged exposure to direct sunlight may create unwanted rainbows or fractures within the crystal.

Why do some quartz crystals appear cloudy while others are clear?

The clarity variation in quartz crystals results from different formation conditions and internal structures. Perfectly clear quartz forms under specific conditions with minimal inclusions or disruptions during growth. Cloudy or milky quartz contains tiny fluid inclusions or mineral particles trapped during formation. Both varieties are equally genuine – clarity is not an indicator of quality but rather a natural variation. Some practitioners actually prefer cloudy quartz for certain purposes, while others seek the clearest specimens. The choice often comes down to personal preference and intended use.