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| Faceted Stones A-E, F-R, S-Z |
| Stone Name | Color | Treatment | Mohs Hardness | Stone Cut Available | |
| Green Fluorite | Pale green | None | 5.5-6 | Faceted | |
| Mixed Fluorite | Pale green and lavender. some stones are more lavender than green | None | 5.5-6 | Faceted | |
| Fluorite: This is one of the most colorful minerals in the world. In a single stone you may see numerous glowing colors; blue, green, yellow, purple, white and even reddish Care: Because fluorite is a soft gemstone, it should not be used in rings. Avoid harsh detergents. Never clean ultrasonically. Never steam clean. |
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| Back to Top | Stone Name | Color | Treatment | Mohs Hardness | Stone Cut Available |
| Almandine Garnet | Medium to brownish red | None | 7-7.5 | Cabochon Faceted |
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| Almandine-Pyrope Garnet | Dark red | None | 7-7.5 | Cabochon Faceted |
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| Rhodolite Garnet | Rose to lavender | None | 7-7.5 | Cabochon Faceted |
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| Hessonite Garnet | Yellow-orange to reddish orange | None | 7-7.5 | Faceted | |
| Tsavorite Garnet | Intense green | None | 7-7.5 | Faceted | |
| Green Garnet (synthetic) |
Medium green | Laboratory-grown | 8.25 | Faceted | |
| Garnet (simulated) |
Deep red | Laboratory-grown corundum | 7-7.5 | Faceted | |
Garnet: |
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| Back to Top | Stone Name | Color | Treatment | Mohs Hardness | Stone Cut Available |
| Iolite | Violet-blue | None | 7-7.5 | Cabochon Faceted |
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| Iolite: Derived from the Greek ios (violet) and lithos (stone), iolite is the gem name for cordierite, a silicate of aluminum and magnesium. Sometimes called dichroite, alluding to its dichroic properties, it shows two or more colors according to the direction in which it is viewed through transmitted light. Most iolite is found in gravel beds in the form of water-worn pebbles and is sometimes called “water sapphire” because of its color. Care: Avoid harsh detergents. Never clean ultrasonically or steam clean. |
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| Back to Top | Stone Name | Color | Treatment | Mohs Hardness | Stone Cut Available |
| Mexican Fire Opal | Reddish orange; color varies slightly | None | 5-6.5 | Faceted | |
Mexican Fire Opal: |
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| Back to Top | Stone Name | Color | Treatment | Mohs Hardness | Stone Cut Available |
| Peridot | Medium green | None | 6.5-7 | Cabochon Faceted |
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| Peridot (simulated) |
Light green to olive green | Assembled Lab-grown spinel doublet |
8 | Faceted | |
| Peridot: Sometimes called chrysolite, peridot is a gem from the mineral olivine. Its yellowish to vibrant green color is caused by iron. Before the advent of modern chemistry, stones were classified by color only: all red stones were rubies and all green stones were emeralds. The “emeralds” which we now know to be peridot were mined on St. John's Island (also called Zebirget) in the Red Sea as long ago as 1300 B.C. At that time the island was known as Topazios and the green gems were called topaz. Peridot is an August birthstone. Lore: In ancient Hebrew writings this stone is linked with the Tribe of Simeon. Peridot was believed to cure liver disease and dropsy, to free the mind from envious thoughts, and to dispel terrors of the night. For full magical power it is said that peridot should be set in gold. Care: Avoid harsh detergents. Never clean ultrasonically or steam clean either peridot shown here. |
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| Back to Top | Stone Name | Color | Treatment | Mohs Hardness | Stone Cut Available |
| Lemon Quartz | Soft yellow | Irradiated and heat-treated | 7 | Faceted | |
| Smoky Quartz | Medium smoky brown | Irradiated | 7 | Faceted | |
Quartz: |
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| Back to Top | Stone Name | Color | Treatment | Mohs Hardness | Stone Cut Available |
| Ruby, AAA grade | Medium red | Heat-treated | 9 | Faceted | |
| Ruby, AA grade | Dark red | Heat-treated | 9 | Faceted | |
| Ruby, A grade | Medium to light red | Heat-treated | 9 | Cabochon Faceted |
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| Ruby (synthetic) |
Dark to medium rose-pink, usually with creme-white banding | Laboratory-grown corundum | 9 | Cabochon Faceted |
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| Ruby: A corundum that occurs as a deep red transparent stone and as an opaque reddish-gray material. Ruby owes its red color to traces of chromium; the depth of color is determined by the amount of chromium. When flawless, a ruby is more valuable than a diamond. Synthetic Ruby is laboratory grown corundum that has the same optical, physical and chemical properties as their natural counterpart and are produced for jewelry, watch bearings and laser equipment. Historically, ruby is associated with royalty and the power of life and death. Ruby is a July birthstone in the modern tradition, a July and December birthstone in the ancient tradition, and associated with the astrological signs Capricorn and Leo. Lore: It's been said that rubies ensure a peaceful, harmonious, healthy life as well as to control ones passions and thoughts. To many ruby's color represents heat, life and power. Rubies were attributed the power to prevent loss of blood and strengthen the heart. Care: Avoid harsh detergents. Ultrasonic and steam cleaning are usually safe for natural and synthetic ruby. |
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Sources for the above information:
Gem supply catalogue.
McCreight, Tim. The
Complete Metalsmith: An Illustrated Handbook. Worcester, Massachusetts,
U.S.A.: Davis Publications, INC, 1991.
Douglas Harper. “Online Etymology Dictionary.” November 2001. http://www.etymonline.com
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