Silver and Black-Jet Earrings 007 to 009

50.00€ – 65.00€

Handmade earrings with 930 sterling silver and Jurassic Asturian black-jet.
It is available in three models: with hook closure, with butterfly closure with jet front, or with butterfly closure with silver front. Each piece is unique, handcrafted in our workshop so it may present slight variations.
Approximate weight: between 7 and 8 grams per pair; Approximate dimensions: 6 cm high by 1.3 cm maximum width.

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Additional information

Top - Closure

Hook, Black-Jet Butterfly back, Silver Butterfly back

Black-Jet

Natural Black Jet

HARDNESS: 3 – 4
DENSITY: 1,2 – 1,3 g/cm3
SCRATCH: Dark brown
COLOR: Bright black
BRIGHTNESS: Vitreous
EXFOLIATION- FRACTURE: Concoidea
CRYSTALLIZATION: Orthorhombic system
TRANSPARENCY: Opaque
LUMINESCENCE: Yellowish green

Black-Jet has a compact conformation, is soft to the touch, light and quite hard. In Asturias it is called Acebache or Azebache. The best jet in the world, along with Whithby, is in Asturias in the Jurassic Coast, between Gijón and Ribadasella, with a texture, an intense color and incomparable hardness. Recent studies carried out by a research team of the University of Oviedo, show that the Asturian black-jet comes from a family of Jurassic trees, extinct 65 million years ago.