Bangles in Different States of India
Married woman wears white conch bangles and red lac bangles. Married woman wears iron kada (bangle). Brides in Punjab are wear choodas-ivory bangles in red and white in multiples of four. She generally wears them from a period of 3-6 months after her marriage. These bangles are wearing in groups in both hands. And combination of white and red look gorgeous. Gujarati woman wears gold bangles, glass bangles or combination of both.
They are also interested to wear plastic, metal bangles. Generally they match the color of bangles with their saree though they are from any material. Gujarati woman conceives her sister-in-law presents her a silver chain bangle bracelet. In the seventh month she is also asked to wear a bracelet made of black thread and five kowdis (a kind of shell). It is believed that this bracelet helps in an easy delivery. Green bangles are worn by women of Maharashtra on all auspicious occasions.
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.
Gemstones are so durable
A few are mineraloids not true minerals and are including here: opal, amber, and moldavite. Foremost is durability - it must not easily corrode away, nor can it be brittle. It is so durable that nearly all of the gold ever mined is still in circulation or storage. In some cases, the names are true misnomers, such as Green Amethyst for prasiolite-a transparent green variety of quartz.
In most cases, these variety names are historical, as the gemstones were not recognized as being varieties of other minerals until well after the name was in common use such as aquamarine, emerald, and heliodor as varieties of beryl. And that is related to the third characteristic, ductility. You can see the options are endless and when you are commissioning a piece, why compromise a thing when you can choose!