So You Want To Collect Loose Gemstones
Hints On loose black diamonds
The Reward of Faith Sapphire. This stone was was found in 1975 at the Reward
gemfield near Rubyvale in Queensland, Australia. In 1983 it was cut into the
52.36-carat round you see here, measuring 22.35 mm across and 13.49 mm deep. It
is still owned by its original owner. The stone's color in the photograph is
close to the true color but this does change considerably, to a deeper red,
depending on the nature of the light, although perhaps not strongly enough to be
called a color change sapphire.
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An opal is actually what is known as a mineraloid, a shapeless gel with silicium
dioxide that was deposited at a low temperature in crevices and fissures of all
different types of rock. The most common types of rock where they were deposited
are limonite, sandstone, rhyolite and basalt. It can also form original fossils
or replace fossils that have already been formed, and collectors find this
phenomenon very interesting. Opals are relatively young gems, and they are so
fragile they could never have survived early geological upheavals that produced
other types of stones. Opals did occur in volcanic masses of calcite that filled
the veins in lava rock. Hot, briny gel like mixtures would rise up to the
surface from the volcano which decomposed the calcite. What was left behind was
colloidal silica, and this along with water later produced opals.
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There are many other common types of treatment to enhance the beauty of colored gemstones. Emeralds are often oiled and waxed to protect them and to hide fine lines that naturally occur in the stone. Some sapphires have their blue color enhanced using diffusion, a chemical process. Certain stones are treated with radiation, again mimicking the processes of nature. All these practices are standard in the jewelry industry; in fact, enhancement is so common that good quality unenhanced stones often come with a certificate stating that fact.
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More loose black diamonds Info
Heavy Oval Earring: Oval/ms (e-ho1o-ms)
Tue, 16 Dec 2008 07:26:14 -0800
Brushed silver heavy oval with small vermeil oval accent. Sterling silver earwires. Also available in large vermeil oval with silver accent.
Riveted DIsc Earring w/Star -ms (e-rd1s-ms)
Tue, 16 Dec 2008 07:26:14 -0800
Brushed sterling silver disc, measuring approximately 1 1/8'', with riveted vermeil star accent. Sterling silver earwires.
Kate Winslet wows at 'Revolutionary Road' LA premiere - South Asian Women's Forum
Tue, 16 Dec 2008 11:15:22 GMT
![]() South Asian Women's Forum | Kate Winslet wows at 'Revolutionary Road' LA premiere South Asian Women's Forum, India - She accessorized with black Christian Louboutin peep toe heels with layered uppers, and diamond bangles in her right hand. Kate Winslet at the Los Angeles ... |
I like playing cards and hot air ballooning.