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Mineral Identifier

Identify minerals by physical properties

Identify mineral species by selecting physical properties like hardness, color, luster, streak, and cleavage. Narrow down possibilities from thousands of minerals to find your specimen.

Hardness Comparison

Compare Mohs hardness between minerals

Compare the Mohs hardness of any two minerals side by side. Understand relative scratch resistance, practical hardness tests, and where minerals fall on the Mohs …

Crystal System Explorer

Interactive crystal system geometry viewer

Explore the 7 crystal systems with interactive 3D-style visualizations. Learn about symmetry elements, axes, angles, and which minerals crystallize in each system.

Mineral Checklist

Collector's checklist by mineral class

Generate a collector's checklist of minerals organized by Strunz mineral class. Track your collection, set goals, and discover new minerals to add to your cabinet.

Streak Test Guide

Determine mineral identity through streak color

Interactive guide to using streak plates for mineral identification. Shows expected streak colors for common minerals and helps narrow down possibilities.

Specific Gravity Calculator

Calculate mineral density from weight measurements

Input dry weight and submerged weight to compute specific gravity. Compares results against known mineral densities to suggest possible identifications.

Mineral Value Estimator

Estimate specimen value based on key factors

Interactive tool that considers mineral species, specimen size, crystal quality, locality, and aesthetic appeal to provide a rough market value range.

UV Fluorescence Guide

Explore minerals that glow under ultraviolet light

Browse minerals by their fluorescent properties under shortwave and longwave UV. Learn which minerals fluoresce, what colors to expect, and the science behind fluorescence.

Chemical Formula Decoder

Break down mineral formulas into elements and structures

Enter any mineral chemical formula to see its constituent elements, their proportions, crystal chemistry, and related mineral species in the same chemical group.