VENICE

The process of cutting and polishing gems is called gem cutting or lapidary, while a person who cuts and polishes gems is called a gem cutter or a lapidary (sometimes lapidarist). Lapidary is the art of working in stone. It is required both art and science to understand the gemology. Gemstone material that has not been extensively cut and polished is referred to generally as rough. Below are high level steps to do gem cutting. 1. Starting from analysis of the gem before pre-s

When a gemstone is desired to be used in jewelry, it is cut depending on the size and shape of the rough stone, as well as the desired piece of jewelry to be made. As a rule of thumb, a cut gemstone will reduce the mass (described in the carat) by about 50 percent. There are several techniques available to work with gemstones; among them are sawing, grinding, sanding, lapping, polishing, grilling, and tumbling. Very often, the location of the inclusions in a rough stone will

The color grading system of the GIA seperate "color" into 3 components which will be discussed in full below. Hue Tone Saturation When we judge colored gemstones we judge them "face up" (table up) while balancing the stone between our fingers in the palm of our hand. This lets the light be reflected in and out of the stone through the crown. When we judge reflected light, it is termed "key color" opposed to transmitted light which is named "body color" (viewed through the pav

Similar to diamonds, there are the 4C + 1 to determine your gemstones value. 1. Color 2. Cut 3. Clarity 4. Carat Weight 5. Rarity Color Color is one of the prime aspects what determines the beauty of a gemstone. In the case of most stones, it is not diagnostic in identification, because many have the same color and numerous stones occur in many colors. All gems have a preferred color or a relatively small range of preferred colors. The more the color varies from this range --

There is no generally accepted definition for the term gem or gemstones, but they all have something special, something beautiful about them. As a rule, they are beautiful, rare, and durable. Most are minerals: natural, inorganic materials with a fixed chemical composition and regular internal structure. Most gemstones are minerals (e.g. diamond), mineral aggregates, or rock. Some are organic formations such as amber pearl, etc. For some gemstones the sources of specialness a

Gemstones that have a mineral origin are doing in rocks or in gem gravels derived from these rocks. There are five requirement to become gemstones. Ingredient Temperature Pressure Time Space The right combination of ingredients, heat, and pressure must last long enough for the minerals to crystallize. Traditionally, we were taught that There are three kinds of rock formation: Igneous – Igneous minerals are created with heat. They are minerals that are created deep within the