Base de connaissances sur les cristaux : Minéraux, collection et signification

Explore by Tag

Select a topic... ▼
Angelite bracelet with polished round beads

Bracelet Bead Sizes: 4mm, 6mm, 8mm and 10mm Com...

Bracelet bead sizes explained in mm: how 4mm, 6mm, 8mm and 10mm beads look and feel, how many fit a wrist, and how to choose a size.

Bracelet Bead Sizes: 4mm, 6mm, 8mm and 10mm Com...

Bracelet bead sizes explained in mm: how 4mm, 6mm, 8mm and 10mm beads look and feel, how many fit a wrist, and how to choose a size.

Rare mineral specimens in a collector cabinet

Rarest Minerals List: 12 Rare Specimens and Why...

A list of the rarest minerals in the world, from kyawthuite to fingerite, with how rarity is measured and what collectors should check in a rare specimen.

Rarest Minerals List: 12 Rare Specimens and Why...

A list of the rarest minerals in the world, from kyawthuite to fingerite, with how rarity is measured and what collectors should check in a rare specimen.

Raw black obsidian on a mineral shelf

Black Obsidian Meaning: Protection, Grounding a...

What black obsidian means in crystal traditions, how it forms, what the evidence says, and how to choose, handle and care for a piece safely.

Black Obsidian Meaning: Protection, Grounding a...

What black obsidian means in crystal traditions, how it forms, what the evidence says, and how to choose, handle and care for a piece safely.

Tanzanite bead bracelet on a gem counter

Tanzanite Meaning: Name, Symbolism and Properties

What tanzanite means: where the name comes from, the symbolism linked to it, its December birthstone status, price factors and how to tell real traits.

Tanzanite Meaning: Name, Symbolism and Properties

What tanzanite means: where the name comes from, the symbolism linked to it, its December birthstone status, price factors and how to tell real traits.

Calcite rhombohedron beside aragonite crystal needles

Calcite vs Aragonite: How the Two Minerals Differ

Calcite and aragonite share one formula but differ in structure, hardness, cleavage and stability. Learn to tell them apart, and how quartz compares.

Calcite vs Aragonite: How the Two Minerals Differ

Calcite and aragonite share one formula but differ in structure, hardness, cleavage and stability. Learn to tell them apart, and how quartz compares.

Golden tiger's eye stone with chatoyant band

Tiger's Eye Meaning: Symbolism, Properties and ...

What tiger's eye means in crystal traditions, what gives it the golden band, how to tell good pieces apart and how to choose between gold and blue.

Tiger's Eye Meaning: Symbolism, Properties and ...

What tiger's eye means in crystal traditions, what gives it the golden band, how to tell good pieces apart and how to choose between gold and blue.