Rainbow Fluorite Slab Value Guide

This triangular Rainbow Fluorite slab from China is a striking example of calcium fluoride, prized for its distinct purple and green color banding. Its popularity as a collectible grew during the 20th century, serving as both a decorative display specimen and high-quality material for lapidary work.

What Is Rainbow Fluorite Slab Worth?

The typical price range for Rainbow Fluorite Slab is $25 - $45 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• Vibrancy and saturation of the purple and green color bands.
• The quality of the polish and the overall transparency of the slab.
• Size and weight of the specimen, with larger slabs commanding the $45 price point.
• The presence of unique internal patterns or minimal surface damage.

How to Identify Rainbow Fluorite Slab?

• Look for the characteristic triangular shape with a mix of polished and partially polished surfaces.
• Identify the distinct 'rainbow' effect created by alternating bands of translucent purple and green.
• Verify the material hardness; fluorite is a 4 on the Mohs scale and can be scratched by a steel knife.
• Check for natural internal fractures or 'cleavage' planes typical of authentic calcium fluoride.

History of Rainbow Fluorite Slab

Fluorite has been prized since antiquity for its vivid colors and crystal forms. Used historically as a decorative stone and for carving, its name comes from the Latin fluere because it was used as a flux in metal smelting. Rainbow fluorite specimens became popular with collectors in the 19th and 20th centuries as lapidary techniques and mineral collecting grew; today they are commonly sold as display specimens, cabochon material, and decorative slices.