Herderite Crystal Value Guide

Herderite is a rare phosphate mineral first discovered in 1828 and named after Baron Sigmund von Herder. This specific Brazilian specimen is highly collectible due to its unique brown coloration and its notable ability to fluoresce under UV light.

What Is Herderite Crystal Worth?

The typical price range for Herderite Crystal is $70 - $100 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• Intensity and color of fluorescence under UV light significantly impact the $70-$100 price range.
• Crystal clarity and the presence of well-defined termination points increase market value.
• The rarity of the brown coloration compared to other mineral variants.
• Overall specimen size and the lack of structural damage or internal fractures.

How to Identify Herderite Crystal?

• Verify the chemical composition as a calcium beryllium phosphate fluoride hydroxide mineral.
• Test for notable fluorescence when exposed to ultraviolet light, a signature trait of high-quality specimens.
• Examine the crystal habit for the distinct structures typical of Brazilian deposits.
• Check for the characteristic brown hue which distinguishes this variety from the more common colorless or green types.

History of Herderite Crystal

Herderite is a rare phosphate mineral first discovered in the Ehrenfriedersdorf district of Saxony, Germany, in 1828. It is named after Baron Sigmund von Herder, a prominent mining official. This mineral is prized by collectors for its unusual crystal habits and, particularly, for its fluorescent properties, making it a captivating specimen in mineral collections worldwide. While initially found in Germany, significant deposits have since been discovered in various locations including Brazil, which is known for producing high-quality specimens.