The term "cat's eye", when used by itself as the name of a gemstone, refers to a cat's eye chrysoberyl. Glass optical cable can also display chatoyancy if properly cut, and has become a popular decorative material in a variety of vivid colors. aquamarine), charoite, tourmaline, labradorite, selenite, feldspar, apatite, moonstone, thomsonite and scapolite amongst others. Gem species known for this phenomenon include the aforementioned quartz, chrysoberyl, beryl (especially var. Faceted stones do not show the effect well. Chatoyant stones of lesser quality display a banded effect as is typical with cat's-eye varieties of quartz. The best finished specimens show a single sharply defined band of light that moves across the stone when it is rotated. For a gemstone to show this effect best it must be cut en cabochon (rounded with a flat base rather than faceted), with the fibres or fibrous structures parallel to the base of the finished gem. The effect can be likened to the sheen off a spool of silk: The luminous streak of reflected light is always perpendicular to the direction of the fibres. A cabochon yellow-green quartz showing the cat's-eye effect. It is reasoned that the lattice parameter of the rutile matches only one of the three orthorhombic crystal axes of the chrysoberyl, resulting in preferred alignment along that direction. The rutile precipitates all align perpendicularly with respect to cat's eye effect. Examined samples have yielded no evidence of tubes or fibres. The precipitates that cause chatoyance in chrysoberyl are the mineral rutile, composed mostly of titanium dioxide. Coined from the French œil de chat, meaning 'cat's eye', chatoyancy arises either from the fibrous structure of a material, as in tiger's eye quartz, or from fibrous inclusions or cavities within the stone, as in cat's eye chrysoberyl. ə n s i/ shə- TOY-ən-see), or chatoyance or cat's eye effect, is an optical reflectance effect seen in certain gemstones, woods, and carbon fibre. This can propel your own understanding of what you personally want, rather than the ones that society has forced upon you."Cat's eye effect" redirects here. This forges a bond capable of relinquishing inner doubt and fear, while allowing your heart and not your head to lead. Green Tiger Eye does just that, but also connects your will and heart together. As we all know, Tiger Eye not only contributes to your character development, but also accesses and enhances your personal will. One slight difference we’ve picked up from working with Green Tiger Eye has been the slight (and silent) opening of the heart chakra. Meaning & Energyīoth Green Tiger Eye and Tiger Eye have nearly identical energies and chemical bodies (with small mineral inclusions that contribute to the change in color). We suggest looking for irregularities on the surface of the stone, such as spotted asymmetrical Quartz inclusions, an iron banding pattern (usually dark black) or an unnatural color palette. Sadly, this mineral is often faked so be extremely wary when purchasing any form of Green Tiger Eye. We’ve only seen a few pieces extracted from either Brazil or Madagascar on the mineral market. It has only been found crystallized in the form of masses, which led to it being a popular stone for cutting cabochons and other forms of jewelry. Green Tiger Eye is an extremely rare variety of Tiger Eye and member of the Quartz family. View All Products Science & Origin of Green Tiger Eye Zebra Serpentine (Green Tiger Eye) Products $8
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