The Wilde AltarA developing queer pagan library
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Gay-led and LGBTQ+ affirming. Lesbian, gay, bisexual, transgender, nonbinary, intersex, asexual, questioning people, and respectful allies are welcome. No role here is assigned by anatomy or orientation.

Crystal cabinet

Moonstone

A feldspar, usually orthoclase or a sodium-rich plagioclase, showing adularescence.

A classic piece is colorless, white, or pale peach and looks almost milky until you tilt it and a blue or silvery glow moves under the surface. The glow is the point, not a painted stripe. A glitter-coated white bead with no inner light is a different object, whatever the tag says.

What it actually is

Material identity
Name used hereMoonstone
Mineral or materialA feldspar, usually orthoclase or a sodium-rich plagioclase, showing adularescence.
HardnessAbout Mohs 6 to 6.5.
How it formsIt forms in feldspar-rich igneous and metamorphic rocks, and the sheen comes from light scattering between very thin layers inside the crystal. The layers are geology, not a stored phase of the Moon.

Trade names and mix-ups

True moonstone is that feldspar sheen, a billowy light that seems to float inside the stone. Rainbow moonstone in most shops is white labradorite from Madagascar, a related feldspar with a brighter flash, and sellers often do not distinguish them. Neither one is selenite, which is gypsum, and neither one is opal, though all three get called moon-something when the light cooperates.

Care

Feldspar is softer than quartz and cleaves, so a ring will scratch and a drop can split a thin cabochon. Avoid ultrasonic cleaners, steam, harsh sun on a hot sill, and any salt soak; salt is abrasive here and can haze a polish. Dust with a barely damp cloth and dry immediately. Keep it off the kitchen counter where it will meet knives and granite.

Provenance

Commercial moonstone and the white labradorite sold under its name come largely from India, Sri Lanka, and Madagascar, through cutting towns that the shop label rarely mentions. Ask for the feldspar you are actually buying, and be wary of a mystic markup on a stone the seller cannot distinguish from labradorite.

Symbolism

  • reflected light
  • a private face in public
  • rest on a cycle
  • changing without explanation

Folklore, only where it exists

The European name adularia remembers Mount Adular in the Swiss Alps, and gem writing has compared the sheen to moonlight for a long time; South Asian jewelers have cut feldspar moonstone for generations and have their own lore of the Moon tied to it. Those are real strands, and they are not a single ancient ritual you can buy back in a tumbled stone. The modern divine-feminine packaging is newer still, and it often smuggles in the idea that a sheen belongs to cis women only. The Wilde Altar declines that gendering. Any person may keep a moonstone, including someone whose appearance changes because they are tired, because they are dressing for a dinner, or because they are mid-transition and do not owe the room a diagram. The stone marks reflected light. It does not rule a body, a month, or a marriage.

Cautions

An original practice

The Closed Night Book

  • A moonstone
  • The journal you actually write in
  • A ribbon or a rubber band
  • A lamp you can turn off from the door
  1. 1Write what you need to write while the lamp is on. Stop at a page end rather than at exhaustion if you can.
  2. 2Close the book, lay the ribbon in as a bookmark, and set the moonstone on the cover as a weight, not as a lock with magical force.
  3. 3Tell yourself the time you are allowed to open it again. Morning is a good time. One in the morning is not.
  4. 4Turn the lamp off and leave the book on a table, not in the bed.
  5. 5If you wake and want the pages, get a glass of water for yourself instead, leave the stone where it is, and go back to bed.
The page can wait for daylight. I do not owe the dark a second reading. The sheen is only light, and so is morning.

In the morning, move the moonstone to the windowsill for a minute if you want to see it, then put it back in its dish and open the book only if you still mean to.

A practical action. Keep a pen on the table so a real morning note is easy, and charge the phone outside the bedroom.

Substitutions

  • A smooth white button or a pearl-like glass bead as the weight
  • A folded piece of plain paper on the cover, if you have no pale stone

Beginner questions

  • Is rainbow moonstone the same mineral as classic moonstone? Often no. Shop rainbow moonstone is usually white labradorite. Both are feldspars; they are not the same look or always the same species.
  • Can it regulate my cycle or my hormones? No. That claim is merchandise. Medical questions belong with a clinician.
  • Is it too soft for a ring? It is softer than quartz and it cleaves, so a daily ring takes scratches. A pocket or a dish is kinder.
CitrineQuartz, silicon dioxide, ranging from pale yellow to brownish orange; natural citrine is colored by trace iron, while much market citrine is heat-treated amethyst.Black tourmalineSchorl, the black, iron-rich species of the tourmaline group, a complex boron silicate.CarnelianChalcedony, a microcrystalline quartz, colored orange to red-brown by iron oxide.