Diamonds are a NATURAL mineral composed essentially of carbon crystallized at extremely high temperatures and pressures; in nature, diamonds form 150 to 200 kilometers or more below the earth’s surface
(see Image 1 & 2).
Diamonds are the hardest of all known natural substances (10 on the Mohs scale); its refractive index is 2.417,
Diamonds form in the cubic, or isometric, crystal system (see Image 3), has four directions of perfect octahedral cleavage, and shows a step-like fracture surface.
Its color ranges from colorless to yellow, brown, gray, orange, green, blue, white, black, purple, pink, and, extremely rarely, red (see Image 4).
Transparent and near-colorless in a desirable color (see Image Five), diamond is a highly valued gemstone; poorly colored or heavily included single crystals are used for a wide variety of industrial purposes; poly-crystalline material is crushed and used as an abrasive powder.
Transparent and near-colorless in a desirable color (see Image 5), diamond is a highly valued gemstone; poorly colored or heavily included single crystals are used for a wide variety of industrial purposes; polycrystalline material is crushed and used as an abrasive powder.
For more on diamond cutting and polishing training
Gain the skills to grade the color, clarity, and cut of diamonds.
Using authoritative texts and magnified photos, learn to determine proportions and estimate weight.
Study diamond treatments, synthetics, and simulants, and understand the effect of fluorescence on diamond body color.
Analyze the role cut plays in the marketplace, and acquire the technical knowledge needed to make profitable buying and selling decisions.
This course will also cover how to describe diamond jewelry accurately for effective and ethical sales conversations with customers.
Key topics examined include the internationally accepted GIA ( Gemological Institute of America) clarity grading system, how diamonds are graded for color, and how color affects value.
Coursework includes how modern technology is changing the way diamonds are cut, the relationship between size and weight, and how retail jewelry stores operate.
Final written exam for issue of an internationally recognized certificate after the course.