KnowMastery Every iridescent stone in the database, with what it is made of and what it is traditionally used for.
Iridescence is not a colour but an optical effect: light splitting inside the stone's internal structure. Labradorite flashes from layers in the feldspar, moonstone's floating sheen comes from the same cause, opal's fire comes from a lattice of silica spheres, and nacre iridesces from stacked aragonite platelets. Traditionally these are all read as stones of change, because they refuse to look the same twice.
Chrysoberyl
Green in daylight and red under lamplight, which is why it became the stone of the two-sided life.
Worth knowing: Genuine alexandrite is rarer than diamond. Nearly everything sold under the name is lab-grown alexandrite or colour-change synthetic corundum.
Feldspar · Mohs 6–6.5
Grey until the light hits it, then blue and gold. Tied to intuition and to change already underway.
Nacre (organic)
The iridescent lining of a shell, worn as a protective and motherly charm in coastal cultures.
Worth knowing: Mother of pearl is organic, made of aragonite platelets laid down by a mollusc. Acids, perfume and vinegar etch it.
Glass
Milky and blue-glowing against the light, popular for transitions and for how it looks.
Worth knowing: Opalite is man-made opalescent glass. It is not opal, not moonstone and not a mineral, and honest sellers say so.
Feldspar · Mohs 6–6.5
White with a floating sheen, linked to cycles, patience and your own timing.
Silica (hydrated) · Mohs 5.5–6.5
Iridescent and famously changeable, said to amplify whatever mood you already brought.
Worth knowing: Opal is a hydrated silica gel rather than a crystal, and it can craze and crack if it dries out.
Colour is the fastest way into the correspondence system, because the chakra scheme is itself colour-coded, and most traditional associations follow the colour rather than the mineralogy. It is also the least reliable guide to how a stone must be treated: two stones of the same colour can be a hard silicate and a soft copper carbonate, and only one of them survives a rinse. Each card above carries its own verdict, and the safety checker has the full reasoning.
The mineral family, the Mohs hardness and the water verdict on each card are checkable physical fact, drawn from standard mineralogical and gemmological references. The chakra, element and purpose associations are tradition, published across the modern crystal-healing literature and offered here for reflection rather than as fact. Nothing on this page is medical advice. Browse the full database →