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Lapislazuli Earrings 003

70.00

Lapislazuli and Silver Earrings 003 (925 & 999 silver)

1 in stock

SKU: lzamp003pen Categories: , Tag:

LAPISLAZULI

Natural Lapis Lazuli

HARDNESS: 5,5
SCRATCH: White, light blue.
BRIGHTNESS: Vitreous, smeary in fractures
EXFOLIATION- FRACTURE: Perfect to uneven fracture. Conchoid.
CRYSTALLIZATION: Well-formed crystals, arranged in fracture planes.

Semiprecious stone composed of minerals lazurite, calcium silicate (provides the blue color), wollastonite and calcite (gray and whitish veining) and pyrite (golden reflections). It comes from Afghanistan and northern Chile. Much appreciated since Antiquity, in the Middle Ages it was worth more than gold. Unlike similar stones such as azurite, it does not effervesce in contact with hydrochloric acid.

AMBER

Raw Imperial Amber

HARDNESS: 2 - 2.5
DENSITY: 1.10 g / cm3
SCRATCH: White
COLOR: Yellow to red
BRIGHTNESS: Vitreous
EXFOLIATION- FRACTURE: Conchoidal
INDEX OF REFRACTION: 1.54
TRANSPARENCY: Transparent to translucent

Fossilised resin from conifers, yellow, brown and red. It has occasionally insects, plant debris and bubbles icluded. It can be treated with oil to remove bubbles. It is electrified when rubbed with a cloth. In contact with chemicals may deteriorate.