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Questions and Answers
What is the Italian name for oxblood coral?
What is Abalone Shell also known as?
What is a common artificial imitator of Amber?
What is a common imitation material for Coral?
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What is a type of coral that lacks the wood-grain-like structure lines of natural coral?
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Where is the main source of jet?
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Which country is also a major source of jet besides England?
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What is the closest association with jet in England?
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What is Jet mostly used for in the late Victorian era?
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Which type of obsidian is characterized by a golden or silver sheen?
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What is the primary source of Amber in the world?
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What is Sphene typically cut into to emphasize its fire?
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Where is Golden Coral primarily found?
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What is Jet composed of?
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How is Jet formed?
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What type of coal is Jet?
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What is the process that creates Jet?
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What type of coal is often used as a substitute for jet?
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What is Vulcanite, which is often used to imitate jet?
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What is another material often used to imitate jet?
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What is another type of material used to imitate jet?
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What is obsidian often used to imitate?
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What is the characteristic of Jet in terms of its polish luster?
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What is the typical color range of Tortoise Shell?
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What is the primary color of Apatite?
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What is the typical color range of Kyanite?
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What is the characteristic of Benitoite in terms of its pleochroism?
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What is the typical color range of Moldavite?
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What is the characteristic of Fluorite in terms of its transparency?
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What is the characteristic of Ammonite in terms of its color?
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What is the typical polish luster of Jet?
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What is the characteristic of Benitoite in terms of its zoning?
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What is 'Paris jet' actually made of?
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Which characteristic is unique to Amber?
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Which material is often etched with acid?
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What is a common use for Obsidian in prehistoric times?
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What is the name of the massive crystalline variety of fluorite other then Blue John?
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Study Notes
Trades Names and Synonyms
- Coral: "oxblood" in English, "rosso scuro" or "arciscuro" in Italian, "pelle d'angelo" for pink coral, and "salmon" for vivid pink coral
- Conchiolin coral: also known as "King" or "Akabar coral" or "Horn Coral"
- Abalone Shell: also known as "paua" in Maori
- Ammonite: also marketed as "ammolite" and "korite"
Main Sources and Locations
- Amber: Baltic Sea region of Europe, Dominican Republic, Germany, Lithuania, Poland, Russia, Denmark, Mexico, Alaska, and Myanmar's Kachin State
- Coral: Mediterranean Sea, Japan, Malaysia, Philippines, Taiwan, and Queensland, Australia
- Conchiolin coral: Queensland, Australia, and Hawaii, USA
- Ammonite: Canada, England, Morocco, and the USA
- Tortoise Shell: Atlantic hawksbill sea turtle, found in tropical and subtropical seas worldwide
- Jet: England, Canada, France, Germany, Spain, and the USA
- Apatite: Madagascar, Brazil, Mexico, Myanmar, and the USA
- Benitoite: San Benito County, California, USA
- Fluorite: China, England, Switzerland, and the USA
- Kyanite: Brazil, India, Kenya, Myanmar, Pakistan, Switzerland, the USA, and Russia
- Moldavite: Western Moravia, Germany
- Sphene: Austria, Brazil, Canada, France, Madagascar, Mexico, Myanmar, Sri Lanka, Switzerland, the USA, and Russia
Common Imitations and Treatments
- Amber: Copal, Bakelite, Casein, epoxy, glass, and polyester are common imitations
- Coral: Glass, porcelain, and various plastics are common imitations, Gilson imitation coral, and corozo nuts are stained to mimic Mediterranean coral
- Tortoise Shell: Celluloid, casein, and Bakelite plastics are common imitations
- Ivory: Celluloid, plastics, and fine plaster of Paris are common imitations, bleached and dyed to give an antique appearance
- Shells: Molded glass and plastic are common imitations
- Jet: Cannel and anthracite, Vulcanite, glass, obsidian, and plastics are common imitations
Common Cuts and Jewelry
- Amber: Cabochon, beads, and carvings
- Coral: Beads, cabochons, carvings, and cameos
- Tortoise Shell: Inlaid pieces with gold, silver, or mother-of-pearl in floral and geometric patterns
- Ivory: Carvings, cabochons, beads, and bangle bracelets
- Ammonite: Cabochons, free forms, tablets, ovals, and squares
- Jet: Beads, buttons, carvings, faceted pieces, and cabochons
- Benitoite: Strong but rare, mostly set in high-end jewelry
- Fluorite: Beads and carvings, mounted crystals for "new age" pendants
- Kyanite: Faceted into brilliant and step cuts in a variety of sizes
- Moldavite: Faceted into brilliant and step cuts in a variety of sizes, or set as natural uncut pieces
- Sphene: Cut brilliant-cut and mixed-cut styles to emphasize its fire
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Description
Test your knowledge about various materials used to imitate ivory, including celluloid, bones, deer horn, and vegetable-source ivory. Learn to identify the differences between these materials and the real thing. Discover the unique characteristics of each ivory imitator.
