The Gemological Institute of America supports the gem and jewelry industry by setting practice standards for its professional members. GIA notes that it sponsors education and research programs that encourage the public's trust in their jewelry and gem purchases. GIA may best be known for its diamond-grading system.Know More
Many consumers use diamond grades determined by GIA's Cut Grading system to compare the qualify of stones they're considering purchasing. Such characteristics as shape, color and clarity factor into a stone's grade.
To further educate the public, GIA maintains a comprehensive online encyclopedia consumers may search by color or nation of origin to learn a stone's characteristics. Buying guides linked to the encyclopedia offer information consumers need to make smart purchase decisions.
GIA offers industry professionals a wide variety of education and certification programs. The organization notes that its programs range from diamond and colored-stone buying and grading to stone identification, equipment and instrumentation, and markets and supply chains. Those who complete education requirements earn certifications such as GIA Graduate Gemologist and Accredited Jewelry Professional, or diplomas such as Jewelry Design & Technology.
GIA's "Gems & Gemology: The Quarterly Journal of the Gemological Institute of America," publishes gem-related research and other articles of interest to industry professionals. It covers the scientific and technological aspects of jewelry and gemology and delves into business topics.Learn more about Geology
The most recognizable purple stone is the amethyst, a clear purple or bluish-violet variety of crystallized quartz commonly used in making jewelry or for decorative display. The name of the amethyst stone is tied to the Ancient Greek language and means "not intoxicated." This refers to the belief by some people that the amethyst protects the wearer from intoxication by alcohol.Full Answer >
Lab-created diamond rings are finger jewelry that use synthetic diamonds as gemstones. Synthetic diamonds are much less expensive than mined diamonds, and they are virtually indistinguishable. Both kinds of diamonds are a special crystalline form of carbon that develops under immense temperature and pressure to create strong bonds.Full Answer >
The most common use of quartzite is for dimensional stones in the construction industry. While construction also uses quartzite as crushed stone, this use accounts for less than 6 percent of the common uses for this type of material in the United States.Full Answer >
Mica is a mineral that is commonly used in the electrical industry, to produce shingles and other building materials, and to prepare samples for microscopy. It has also been used to create window-like panes on stoves and lanterns, and to facilitate pigment suspension in paints and dyes. Its sheet-like cleavage structure and high heat resistance make it an ideal substance for these purposes.Full Answer >