Iceland Spar $9.99

Iceland Spar is a clear, naturally formed variety of calcite known for its optical clarity and distinctive transparency. Often used in classrooms and collections to demonstrate light refraction and double imaging, this mineral is a favorite among geology students, educators, and anyone curious about the science of crystals. Its crisp, glass‑like appearance makes it an eye‑catching piece for display or hands‑on learning.

Why you'll love this:

• Transparent calcite that clearly demonstrates optical refraction and double refraction
• Smooth, naturally cleaved surfaces highlight calcite’s crystal structure
• Durable mineral piece ideal for study, display, or classroom demonstrations
• A helpful sample for exploring crystal systems, mineral identification, and Earth science
• Great for students, collectors, and anyone building a geology learning collection

A bright, engaging way to explore the science of light and minerals.