Mexican Opal 15-23mm faceted beads (ETB00693) Matte Crystal

Mexican Opal 15-23mm faceted beads (ETB00693) Matte CrystalMexican Opal Cantera opal These stones are comparable to Australian boulder opal and its origins are similar. These are found as small pockets or seams veins of opal associated with rhyolite matrix, the host rock, which is softer than the opal. The word cantera refers to the host matrix. Like boulder opal and koroit opal, these stones were not initially as prized as the pure cuts but cutters and buyers of both koroit boulder and cantera opal came to

While pietersite has the lovely chatoyancy of tiger eye

with a solid color or an irregular display of colors caused by various mineral impurities

The hardness is between 5

B : 20 x 40 x 12 mm

Its energies are calming and it is thought to act to reduce stress and quieten the mind

It was first described in 1813 in reference to a sample from Cavnic

Size: 4 - 8 mm

In late medieval and early modern English the citrine colour-name was applied in a wider variety of contexts than it is today and could be "reddish or brownish yellow

these stones were not initially as prized as the pure cuts but cutters and buyers of both koroit/boulder and cantera opal came to appreciate the attractiveness of the matrix cut and polished with the opal

The proper name for this material is agatized coral or agatized fossil coral

Size: 6 x 10 x 2

Dimensions of beads: (measurement is approx) small: 14x18x10/ large:16x21x11mm Length of this strand: 430mm Origins: Australia