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Tigereye's qualities, geology, sources, history, and current market conditions are described in a brief Q&A format.

Ten unusual gemstones found at a trade show in Tucson, AZ, included orbicular jasper, hauyne, gem beads, yellow Nevada opal and a large red diamond found in Australia. Other stones are described.

Many gemstones has similar colors and textures, making identification difficult. However, jewelers can accurately identify between gemstones by using refractometers which measure the differences in the refraction of light.

An explanation is presented of the phenomenon of refraction, the refractive index and the causes of multiple refractions within a gemstone.

Almandine garnets as an inclusion in sapphires was discovered in Dry Cottonwood Creek, MT. Marc Bielenberg conducted a study to determine the sapphire potential of the area and found the sample with almandine.