Other articles where Siam zircon is discussed: variety is called starlite or Siam zircon, while the third type is called Ceylon or Matara diamond. So for the record, zircon (zirconium silicate, ZrSiO4) is NOT the same material as the As a mineral specimen, zircon is uncommon in most rock shops because. Comments: Cathodoluminescence image of earth's oldest-known mineral (zircon grain - W74/) with inset concordia plot showing the 4, billion year old.


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Zircon Mineral Data

Connected to internal radiation damage, these processes partially disrupt the crystal structure and partly explain the highly variable properties of zircon. Zircon mineral zircon becomes more and more modified by internal radiation damage, the density decreases, the crystal structure is compromised, and the color changes.

zircon mineral

zircon mineral Zircon occurs in many colors, including reddish brown, yellow, green, blue, gray and colorless. Zircon can make a very attractive and affordable gemstone.

Classroom Resources

It is found in browns and greens but can be heat treated to beautiful blue and golden colors. Colorless material is produced in this way as well. Zircon is a popular gem because it is available in a variety of pleasing colors. Most natural zircons zircon mineral yellow, red, or brown. Heating and irradiation can be used to produce colorless, blue, green, and many other zircon colors.

  • Zircon Mineral Data
  • ZIRCON (Zirconium Silicate)
  • Zircon | mineral |
  • Geologic Occurrence Of Zircon

Blue is the most popular zircon color. Although it is not as durable as diamond, zircon has good physical durability as a gem. It zircon mineral a hardness of 7.

Siam zircon | mineral |

That combination makes it suitable for most gemstone uses that include rings, earrings, pendants, brooches and other jewelry.

Some zircon, especially gems that have been heat treated, can be brittle. The facet edges of these gems are susceptible to nicks and chipping.

Zircon mineral Damage in Tanning and Nail Salons Most blue zircon sold in jewelry today is produced by heat treating brown zircon in a reducing atmosphere to to degrees Celsius.

Some people have damaged these blue zircons by exposing them to ultraviolet radiation in tanning beds or under zircon mineral lamps used to cure acrylic fingernail adhesives. The blue color can degrade to brown with just minutes of exposure.

The color of some of these gems have been restored by exposure to low wattage incandescent light. To avoid ruining a nice gem, zircon mineral jewelry at tanning and nail salons.


Zircon mineral concentrates are produced by mining heavy mineral sands from land- and marine-based deposits. The Australian Coast - Teacher notes and student activities Australia's coastline is zircon mineral of the longest national coastlines in the world. Zircon is widespread as an accessory mineral in felsic igneous zircon mineral.

It also occurs in metamorphic rocks and, fairly often, in detrital deposits.