14 Days Free Returns
 Free US$15 shipping coupon for first time order code FS1
Total SKU's 17,211
Vendors 144
Registered Members 3,137
 Gem Guide
- Birthstones
- Gold and Other Precious Metals
- Gemstones By Color
- Gemstone Sizes and Weights
- The Nine Sacred Navaratnas
- Ruby Buying Guide
- Physical Properties of Gemstones
- Sapphire Buying Guide
- Anniversary Gemstones
- Gemstone Attribute Table
- AIGS Master Color Chart
- Gemstone Color and Clarity Guide
- Gemstone Cut and Appraisal Guide
- The Mohs Hardness Scale
Gems Directory
  JTC Standing Showcase for Rent
  JTC Office Space for Rent
  JTC Jewelry Booth for Rent
  JTC Retail Showroom for Rent
Search Result > Total (6) Items Found. Sort By :  Price  |  Price Per Carat  |  Weight  |  Shape 

Opal is an amorphous silica mineraloid, which may also contain up to twenty percent water by weight. Material is usually sub-classified as either “common” or “precious”, with the latter displaying the play-of-color phenomenon with which the species is most associated. This effect is observed as a multi-colored iridescence that is seen to shift in form as the stone, viewer and/or light source is moved. As “hot” hues are less commonly encountered within these patterns than greens and blues, their presence will significantly increase a stone’s value.

While most precious opals are whitish, some rare and highly-valuable specimens from Lighting Ridge, New South Wales provide a darker background against which the above-described effect is especially prominent. However, the neighboring state of South Australia is responsible for around eighty percent of the world’s precious opal production as a whole, with recently-discovered deposits in northern Ethiopia providing much of the remainder.

<<   Previous
Next  >>   [ Page 1 of 1  ]
Ethiopian Opal Cabochon
$ 65.00
1 pcs 7.20cts

Ethiopian Opal Cabochon
$ 400.00
1 pcs 10.38cts

Ethiopian Opal Cabochon
$ 280.00
1 pcs 7.15cts

Black Opal
$ 148.00
1 pcs 25.77cts

Black Opal
$ 500.00
1 pcs 10.47cts

<<  Previous
Next  >>   [  Page 1 of 1 ]

Learn more about Gemstones
  Our Policy
Price Index
Gemstone Enhancement Codes
  Customer Services
Contact Us
  About Gemwow.com
AIGS Thailand
Jewelry Trade Center