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Diamond-
April's Gemstone
April's birthstone is the
diamond. Diamonds are a wonder of nature. Their cold sparkling fire has
held us spell-bound for centuries with myths of romance, power, greed,
and magic. Ancient Hindus, finding diamonds washed out of the ground
after thunderstorms, believed they were created by lightning bolts.
Today, the diamond is a symbol of enduring love.
Diamonds are the rich cousins of graphite, both crystalline forms of
pure carbon. The enormous difference in their properties is a result of
the way that carbon atoms are bonded together. In graphite, carbon atoms
are arranged in sheets that easily slide past each other, making them
ideal as lubricants. Diamond crystals, are a tight-fisted network of
carbon atoms securely held in four directions, making it the hardest
naturally-occurring substance.
Man-made Diamonds
Up until a few years ago De
Beers controlled all the worlds diamonds - by stockpiling tons at a
time, they greatly increased the value of a relatively-common
crystallized rock.
However, it is now possible to
artificially grow diamonds, the same way they are formed over millions
of years. Using high-pressure and high-temperature in crystal growth
chambers, the size of a washing machine. Within each chamber, a tiny
sliver of natural diamond is bathed in a molten solution of graphite and
a metal-based catalyst at approximately 1,500 C. Slowly, carbon
precipitates onto the diamond seed crystal. A gem-quality, 2.8-carat
rough yellow diamond grows in just under three-and-a-half days. This can
then be cut and polished to give a gem larger than 1.5 carats. (One-half
carat is equal to 100 mg of diamond about the size of a kernel of
corn.).
To say these cultured stones are not real diamond is false. Chemically
they are identical to mined diamonds, but they do have different growth
patterns and a lack of inclusions that would draw suspicions to a
qualified a jeweler. However, those bits of minerals that are enclosed
in a natural diamond as its forms are regarded as flaws; a lack of
inclusions is actually a good thing. For a jeweler to tell for sure, De
Beers has designed a machine for around $10,000.
Cubic
Zirconia
A much cheaper
way of making a stone that looks like diamond was created by Russian
scientists. Cubic Zirconia is a dense clear material through which laser
light can be reflected. When melted at high-temperature and an
incredibly-high electrical current sent through it, the compound
crystallizes, forming chunks similar to rough diamonds, which are then
be cut and polished to exact specifications.
Using
the naked eye, even a trained jeweler cant detect the difference between
good cubic zirconia, genuine or cultured diamonds. And even diamond
experts have been fooled between cubic zirconia and a
five-million-dollar diamond - concluding that both were fakes! All are
fully faceted, cut and polished the same.
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Quartz Crystal
-
April's Alternate Gemstone
Diamonds
are too expensive for most to make jewellery, but a gemstone with
similar charectristics for April is quartz crystal.
The Mayans, Druid priests, and Tibetan monks all knew
the spiritual power of crystal. The ancients used it to strengthen the
sun’s rays to bring heat, and the Chinese science of feng-shui teaches
that arranging crystals around the home retains positive energy.
Crystals
became important to these people because of the belief in their capacity
to store and amplify any power source fed into them - physical, mental,
emotional, or spiritual. Today’s crystal therapists say that the stones'
ability to work as a conductor allows energy to be focused via a
person's thoughts to stimulate healing. And many people use crystal to
focus attention on what they want. With a little imagination, you too
can use crystal's energy to access a higher level of consciousness and
turn a desire into reality.
All
types of crystal have this magical power, but individual colour crystal
is believed to have other uses too. Rose quartz, the stone of
unconditional love, is great for emotional healing. Red, yellow, and
orange stones are said to produce energy; clear and aquamarine stones
are healers; and lavender and blue-violet are calming stones.
Pure
rock crystal is clear, but usually quart comes in a variety of opacity.
Milky quartz is cloudy because of microscopic inclusions of fluid
embodied in the crystal at the start of its life - creating an
attractive effect of a crystal within a crystal, giving the interior a
ghostly appearance. Smoky Quartz is caused by natural radiation from
nearby granite rocks which have a small amount of radioactivity.
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