Brown Beaded Bracelets a lovely selection
Brown Beaded Bracelets a lovely selection of different brown bracelets on elastic strings that is sure to please. Red Coral Colour Bracelet Update an outfit in an instant by slipping on this red coral colored handmade bracelet. Crystal and Silver Heart Bracelet nothing else but glamour comes to mind when wearing this delicate Sterling Silver piece totally inspired by the famous Tiffany collection.
The bracelet is adjustable and also available in black or turquoise, to recreate this season's hottest look. This 12 in 1 package is fun, funky and elegant to wear. Orange and Brown Pearls Bracelet is cute seed beads bracelet is just the thing to add a quirky, whimsical feel, to a simple casual outfit. Hand crafted, it fit any wrist size. Made by hand you will not find others like these.
How Durable is My Gemstone Jewellery?
First of all a note about the hardness and therefore relative durability of gemstones. To measure hardness, the jewellery industry uses the Mohs scale. This gem-trade standard, conceived by Friedrich Mohs in 1812, measures the ability of a gem or mineral to resist abrasion damage.
Diamond at 10 is the hardest whereas talc at 1 is the softest. Popular gemstones like amethyst and citrine register 7 whereas rubies and sapphires register 9. Most of us come off the beach on the first day with the 3 sís all achieved - rings caked in sand, sea-salt and suntan lotion. Nude sunbathing, as far as silver and gold jewellery is concerned, is a must! Remember also that sand will scratch the surface of precious metals.
Gemstones are identified by gemologists
Gemstones are identified by gemologists. The first characteristic a gemologist uses to identify a gemstone is its chemical composition. Gems are characterized in terms of refractive index, dispersion, specific gravity, hardness, cleavage, fracture, and luster. They may exhibit pleochroism or double refraction. Who describe gems and their characteristics using technical terminology specific to the field of gemology.
Next, many gems are crystals which are classified by their crystal system such as cubic or trigonal or monoclinic. They may have luminescence and a distinctive absorption spectrum. For example, diamonds are made of carbon (C) and rubies of aluminium oxide (Al2O3). Another term used is habit, the form the gem is usually found in. For example diamonds, which have a cubic crystal system, are often found as octahedrons.