and Glendora Booqua, Zuni - Sterling Silver
and Glendora Booqua, Zuni
Paula says - "The imitation opal in this beautiful Charoite and Opal bracelet shows brilliant flashes of pink, green and gold depending on how light strikes it."
100% solid silver won't tarnish but it is too soft to use for making jewelry - it could easily be scratched, dented and bent. Sterling silver has a small amount of one or more other metals usually copper, added to the silver. To be called sterling silver, the alloy must contain at least 92.5% pure silver. Sterling silver alloy is harder than pure silver but the added metals also can cause discoloration or tarnish. Read more about silver.
Opal is a naturally blue stone with interior fracturing of light which results in a play of color. Opal is October's birthstone and is believed to make the wearer less self-conscious, thereby encouraging spontaneous action and awakening one's psyche.
(also known as precious opal) contains between 3-10% water but can be as high as 20% and this can make the stones less stable.
is considered a true synthetic or created opal – produced in controlled laboratory conditions and with the same chemical composition as natural opal but with a very low moisture content making it more durable. Lab opal has much fracturing of light and brilliant colors including blue, pink, purple, red and green.
(artificial or simulated opal) is different chemically from natural and lab opal. It is made up of 80% silica and 20% resin and is an economical option to both precious and lab opal.