Glass bangles are mostly produced in only one Indian city called Firozabad in North India. Bangles that were made from plastic started replacing the glass bangles. Glass bangles are usually smooth, with some texture or set with stones.
However, in many cultures, especially in the Arabian Peninsula and in South Asia, bangles have evolved into various types in which different ones are used at different occasions. In India, Hyderabad has a historic market for bangles named the Laad Bazaar. In Pakistan, glass bangles are almost all produced in Hyderabad, Pakistan. Glass bangles are found in many colors.
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.
Engagement rings would be placed on the left ring-finger
An engagement ceremony would be celebrated with an established rite after families reached a marriage agreement for their children. During the ceremony engagement rings would be exchanged between boy and girl. The Romans used an ancient clasped hand design for betrothal rings.
Some antique engagement rings were made with a delicate designs using turquoise. And which is symbolized the forget-me-not flower. This "fede" or "trust" ring remained popular for centuries and is still used in jewellery. Gemstones in antique engagement rings were expensive luxuries as trade with the Middle East and Asia had not yet allowed for the flow of imported stones. In accordance to an Egyptian belief the engagement ring would be placed on the left ring-finger. They believe that very fine vein ran directly to the heart from the left finger.