In Roman times and now also bracelets are so popular
In Roman times and now also bracelets are so popular. Roman bracelets shared many of the design patterns. In the designing of their jewelry The Roman's were very creative. However they still borrowed from Greek motifs. This includes necklaces and earrings from that era.
Bracelets made of twisted coil with lion head ends were common place. As it were the two part bracelets ending with a pair of lion heads. The ever-popular ball earrings from that era were nicely matched with a ball style bracelet. The Heracles knot bracelet is recognized as a Roman era piece. Palmettos, fleeing dogs and acanthus leaves, all of Greek origin, were often seen in the designing of Roman jewelry. During roman times Engraved bangles and snake bracelets were very popular. The idea took favor and the fashion spread far and wide.
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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.