Information about Jewellery
The word Jewellery is derived from the word jewel. The first pieces of jewellery were made from natural material such as shell, wood, animal teeth and carved stone. Jewellery was created for practical uses during earlier times. That uses are for storage, pinning clothes together and for wealth. It has been used exclusively for decoration in recent times.
Jewellery was often made for people of high importance to show their status and, in many cases, they were buried with it. There are many more types of Jewellery, it has been made to adorn nearly every body part from Hairpins to toe rings. Jewellery is made from gemstones and precious metals is high quality jewellery. jewellery where design and creativity is prized above material value is called Art Jewellery, and there is also growing demand for this Jewellery. Costume Jewellery is less costly, made from less valuable materials and mass produced.
Cut of the stone
Firstly we talked about the cut of the stone. Now finding a good quality bright green tourmaline with this cut is not impossible to find but can be tricky so we decided that custom cutting was the way forward. We custom cut the green tourmaline from a larger cushion stone to create the look. We combined the chequer board facetted cut on top but with a more square proportioned shape rather than oval.
The lapidaries squared up the proportions and then facetted the top of the stone. This creating a square cushion shape with a facetted top! Donna felt a straight sided square stone would be a little harsh so decided that she would like to have the stone with softened corners. The initial stone was 1.72cts and ended up at 1.05ct. After being cut gemstone it is difficult. We searched for a green tourmaline of the right colour that could be cut to shape. The twist ring is simple in style holds the tourmaline for a modern design.
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.