Porphyry

The name porphyry comes from the Greek porphyrites = the pupur-like. It refers to all magmatites. In the case of volcanic rocks, one speaks of "porphyrites". Synonyms for volcanic popphyrite are chinstone, chrysanthemum stone or Tibet stone.

Porphyrites occur all over the world. Chrysanthemum stone is found in Greece, Dalmatian stone in Mexico.

In the case of chrysanthemum stone, green to colourless crystals stand out from the dark grey to black matrix, whereas in the case of Dalmatian stone, black crystals stand out as dot-like blasts from the light matrix.

Porphyrites consist mainly of silicates.

Mohs hardness: Chrysanthemum stone: 5 - 6                                  Dalmatian stone: 6 - 7
Density: Chrysanthemum stone: 3.0 - 3.3                                         Dalmatian stone: 2.7 - 2.9
Cleavage: Chrysanthemum stone: none, granular fracture              Dalmatian stone: none, uneven fracture
Stroke colour: Chrysanthemum stone: grey                                     Dalmatian stone: white to blue-grey
Transparency: Chrysanthemum stone: opaque                               Dalmatian stone: opaque to translucent

Healing properties
Consideration, encourages to play it safe, helps with restlessness due to overstimulation, cautiousness.