Costa Rica Turquoise Bridal Fashion Necklace Bracelet Gold Jewellery 79

Costa Rica Turquoise Bridal Fashion Necklace Bracelet Gold Jewellery. 

By Aamir Mannan.

Material treated with plastic or water glass is termed "bonded" or "stabilized" turquoise. This process consists of pressure impregnation of otherwise unsaleable chalky American material by epoxy and plastics (such as polystyrene) and water glass (sodium silicate) to produce a wetting effect and improve durability. Plastic and water glass treatments are far more permanent and stable than waxing and oiling, and can be applied to material too chemically or physically unstable for oil or wax to provide sufficient improvement. Conversely, stabilization and bonding are rejected by some as too radical an alteration