| London Blue Topaz Gemstone Information Information * Loose gemstones * Jewelry links Topaz is the gemstone representing the 4th and 19th wedding anniversaries. The name topaz comes from Topazios; an island in the Red Sea. In 15th century Rome, topaz was used to detect poisons, calm anger, and break spells. Christian's believed topaz stood for uprightness; and to Hindu's, topaz worn above the heart prevented thirst and assured long life, beauty, and intelligence. The Greek's felt topaz gave them strength and was used as an amulet against harm. |
|||
ENHANCEMENT CODE R Click to view AGTA code. PROPERTIES Refractive Index 1.619-1.627 Hardness = 8 (Moh's Scale). Specific Gravity =3.53 Species - Topaz. Optic Character - Double Refraction. Phenomena - Chatoyancy. WARNINGS FOR CARE Ultrasonic: Never use. Steamer: Never use. Heat: Poor; color change may occur with heat. Chemicals that harm: affected very slightly. |
Crystal Structure  Crystal system: Orthorhombic, prisms with multi faceted ends. MAJOR SOURCES Brazil, Nigeria, Australia, Myanmar, Mexico, Namibia, Pakistan, Sri Lanka |
Birthstones | |
| January | Garnet | ||
| February | Amethyst | ||
| March | Aquamarine | ||
| April | Diamond | ||
| May | Emerald | ||
| June | Pearl/Alexandrite | ||
| July | Ruby | ||
| August | Peridot | ||
| September | Sapphire | ||
| October | Opal/Tourmaline | ||
| November | Topaz or Citrine | ||
| December | Blue Topaz or Zircon | ||
| Common Cut Examples. |
