Faceted 4 x 2,5 mm green onyx beads thread

A strand of approximately 38 cm of faceted green onyx rondelles, in a dense, even fir green. The facets, crisp and regular, let the light play across a translucent edge, like polished bottle glass. Features: Stone: green onyx (naturally dyed and heated chalcedony) Shape: faceted rondelle Size: approximately 4 mm in diameter Thickness: approximately 2.5 mm Hole: approximately 0.8 mm Strand length: approximately 38 cm Quantity: approximately 166 beads per strand Color: deep green Their size fits anywhere: necklace strand, elastic or strung bracelet, spacers between larger beads, earrings drops. Green pairs especially well with gold and with the warm tones of mother-of-pearl or garnet. For a smaller quantity, these same beads are available in a lot of 20. A bit of gemology: onyx is a variety of chalcedony, a microcrystalline quartz (SiO₂) formed from an interweaving of quartz fibers invisible to the naked eye. Hardness of 6.5 to 7 on the Mohs scale, density of approximately 2.6, conchoidal fracture: it is a hard and tough material, perfectly suited to everyday wear. Its slight porosity allows it to absorb dye deeply, a practice already described by Pliny the Elder in connection with Roman agates. The name comes from the Greek onux, “nail,” in reference to the white-banded chalcedonies whose color it evoked. To know: the green color of these beads is not natural. The chalcedony is dyed, then heated to fix and even out the shade; this is the case for nearly all green onyx on the market. The color is stable in wear; simply avoid prolonged baths, solvents, and alcohol. In lithotherapy: green onyx is associated with the heart chakra; it is attributed virtues of balance, self-control, and calm energy. Natural product: size, shape, shade, and number of beads may vary slightly from one strand to another. Dimensions and quantities are given as an indication.