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By Diamond Specialist, January 26, 2012 6:16 am

Corundum is the form of mineral from which sapphires and rubies are derived. The mineral is naturally clear, but can have different colors when impurities are present. Transparent corundums are used as gems, and if they’re red, then they’re rubies, while all other colors are called sapphire. The word corundum comes from the Tamil kurundam Due to corundum’s hardness (typically 9.0) it is commonly used as an abrasive in machining, from huge machines to sandpaper. Emery is an impure and less abrasive variety, with a Mohs hardness of 8.0. You’ve probably used corundum hundreds of times when you’ve filed your nails with an emery board!

Corundum is actually the second hardest substance on the earth, after the diamond, and as such has many industrial uses. Corundum is crushed, ground and screened to varying grain sizes. The grains are utilized in the manufacture of grinding wheels for flour and rice mills, and workshops. Grinding wheels are manufactured either by a mixture of corundum, clay and feldspar or by using sodium silicate as a bonding agent. Finer grains are utilized for the preparation of grinding-pastes for the automobile industry. Corundum paper and cloth finished to belts, discs, rolls, sheets and other shapes are prepared by giving a suitable coating generally of sodium silicate.

Due to its hardness corundum also finds use in mortars, wire drawing dies, thread guides and gauge blocks. Gem varieties are sometimes used for pivot supporters in delicate scientific instruments, as jewel bearing in watches.

Corundum in small quantities is used in the manufacture of special sparking plugs, mufflers, pyrometer tubes, rods and insulators for vacuum tubes of all kinds. Finely ground corundum, passing through 200 mesh, is used for the manufacture of the above products by giving them a bond of clay.

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By Diamond Specialist, January 23, 2012 6:18 am

In ancient Egypt, glazed quartz served as a substitute when no high quality examples of Turquoise could be found. The Greeks had originally named quartz, krystallos, the word for ice, but this soon came to mean any crystal. In China’s Ming Dynasty, quartz often showed up as stone in jewelry work. In Pre-Columbian America, explorations of Mixtec graves have uncovered quartz use for ear jewelry. In European history, Queen Elizabeth I’s court spiritualist’s crystal ball was Smoky Quartz, which is also the national gem of Scotland, whose national scepter included a large Smoky Quartz on its top. In modern times, it was the first crystal used in radio transmission and reception and was essential in the development of computers.
Clear quartz is of the traditional healing stones believed to draw out pain and amplify healing energy. Crystal Healers use clear quartz in rituals meant to treat convulsions, diarrhea, dizziness, exposure to radiation, general pain, hemorrhages, headaches, hypochondria and kidney diseases.
Rose quartz is used for treating cardiovascular health, fertility, headaches, kidney disease, migraines and sexual dysfunction, as well as those disorders occurring in the throat, ears, nose and sinuses.
Rose quartz is the essential stone for increasing love and for times of extreme emotional turmoil, such as divorce, bereavement or career set backs because it helps to remind the wearer of the importance of self-love. It stimulates the body’s love centers and can result in peace and fidelity in committed relationships. As one of the most important crystals for attracting love it does emotional maintenance clearing out emotional baggage, converting negative emotions, and calms hot tempers, all of which prepare us for love. The stone is also recommended for improving mental discipline and making one more responsible, and for meditation and mental tranquility.

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By Diamond Specialist, January 22, 2012 4:09 pm

There is a whole world of styles in  mens celtic wedding bands out there, and you can be as unique as you want to be.

Wedding rings are a symbol of union. A union between a man and a woman. This tradition of publicising the union between the man and a woman is a tradition that goes way back to the ancient Egyptians.

Then the use of a ring was slightly different then than now. A ring consisted of something that was more commonly available to the Egyptians. Rushes from along the banks of the Nile.

Rushes were used to symbolise the union between male and female by braiding a small piece around the finger. This created a never ending circle that symbolised eternity. A never ending circle of love.

However although this tradition goes back thousands of years the wearing of men’s wedding bands is much newer. It was really only after the second world war that men decided that the wearing of a mens wedding band was an appropriate way to celebrate their new commitment to their bride.

Now that the wearing of a mens wedding band is fashionable men are turning their thoughts to which type of ring to buy. And as it is rare that a man will wear an engagement ring, (although not unheard of), their wedding ring is often the only piece of jewelry that they will wear. So they need to give it some thought.

So in many cases men want something unique. Something that no-one else has. A mens wedding band that stands out and makes a statement about just who they are. Something very different.

So what alternatives are there for the man who just wants to be different?

Gold, Silver or Diamonds are usually first associated with wedding rings. However for the modern man there are many more choices.

Mens Platinum wedding bands and mens Titanium wedding bands are newer but no less stunning. Both are much more recent for the crafting of rings but both make for magnificent rings.

Platinum is exceptionally strong and durable. However it’s appeal is its unique patina or sheen which it develops over time. And it can be crafted into a fascinating range of unusual mens wedding bands. The options are endless.

Similarly Titanium is exceptionally strong and also very light, a third of the weight of gold. This is a bonus for anyone worried about whether a ring on the finger may feel heavy.

Titanium rings are fashioned out of a single block of Titanium and so need to be made to the exact size. The range of Titanium mens rings is, like Platinum, extensive, and there are rings to suit any taste.

However for the man looking for something really unique there are many other options. The internet has opened up a whole new world for the man looking for unique mens wedding bands.

There are now online jewellers who allow you to design your own ring. For example it is possible to design your own Titanium mens wedding band using a whole variety of Titanium colors. You choose your own ring shape, size and color or mix of colors and add any one of a variety of gemstones to it as you wish. These can be placed exactly as you desire to create a really unique men wedding band unlike anything anyone else has anywhere in the world.

For the really adventurous there’s more. Why not carbon fibre? How about stainless steel, or two tone bands? Or celtic mens wedding bands?

And why not get REALLY adventurous if you wish. For those who want something right out of the ordinary there are many options.

Zodiac mens wedding rings are stunning. Available in all the zodiac signs a zodiac ring will turn the head. Large and very visible a zodiac ring is not for the faint hearted but for the man who wants to be noticed it is a ring that must be considered. And two tone zodiac rings are even better!

Not suitable for a wedding ring? Who says! For the man who wants to be unique it doesn’t matter. If he, and she, both like it then it works for them. That all that matters.

How about mens gambling rings. For the gamblers amongst us there are rings featuring all manner of gambling symbols. How about a gold and diamond roulette ring? It really does have a tiny roulette wheel, with numbers.

Or a gold and diamond spinning dice ring that really does have 2 tiny dice? Or a gold spinning black jack ring.

Even unusual gemstones can be made into the most unique mens wedding bands. Two tone rings with Tanzanite anyone?  Gold with Blue Topaz?  Gold, Diamond and Garnet?

So although the wearing of mens wedding bands is relatively new, it doesn’t have to be boring. These types of rings are not for everyone, but for the man who wants a really unique mens wedding band there are lots of choices.

It’t just a case of how unique do you want to be!!!

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By Diamond Specialist,

Gems come in every color of the spectrum. While sapphires, rubies and emeralds are what come to mind first when one thinks of a colored gem, there are so many other beautiful colored gemstones to consider. Even among gems normally associated with one color, there are gradations and variations to them. A sapphire, for example, comes in many different hues of blue, depending on where it’s from. But sapphires can also come in pink, yellow and green.

The most highly prized colored gems are in the very deepest, richest hues of the color. While sapphires can range from pale blue to near-black, the most valuable are a rich, deep blue. The same holds true for rubies. While they too can range in color from pale to very dark and murky, the most highly-valued color is what’s called pigeon’s blood, a deep blood-red ruby that is mined in what was once known as Burma.

The most expensive emeralds are a deep green, although emeralds themselves come in a broad spectrum of hues, from yellow-green to blue-green. All colored gems, and clear gems, depend on expert cutting and polishing to showcase the colors in all their subtleties and brilliance.

Generally the deeper and richer the color, the more valuable the stone. The best amethysts will be a dark, royal purple. A lighter-colored amethyst simply isn’t as valuable.

But many people prefer these lighter or darker gradations in color. And, they tend to be more affordable. A slightly lighter-colored amethyst is much easier to obtain than the “ideal” color, but is still a beautiful gemstone.

Oddly enough, diamonds are rated by how colorless they are. The less color, the higher the grade of diamond. Unless of course it’s a defined color such as a pink diamond or a canary diamond. These are almost as highly prized as a near-colorless diamond.

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By Diamond Specialist, January 17, 2012 6:22 am

Diamond certification is essential when you’re buying a diamond and is different from a jeweler’s appraisal, although the certification is part of any appraisal. Many diamonds look the same, but not all of them are going to be of the quality you might like. Diamond certification is the written proof of a diamond’s attributes. Without it, you have no assurance that the diamond you are buying is of the quality you’re paying for. With it, you know the precise grading for each of the 4Cs – color, cut, clarity and carat weight, and, therefore, the diamond value.
Certification gives you the information you need to assess a diamond’s value compared to other diamonds. It also allows you to make an intelligent comparison with other diamonds either in the same jewelry store or in another.
Diamond certificates are issued by independent gemological laboratories, not your jeweler. There are several grading laboratories, the most prominent being: the International Gemological Institute (IGI); the Gemological Institute of America (GIA); the American Gem Society (AGS); the European Gemological Laboratories (EGL) and GemEx Systems.
When you buy a diamond, be sure to question the sales associate first about the characteristics or attributes of the stone. Ask to see the diamond certification that will accompany the diamond when you purchase it. If you do some comparison shopping, you will note that the quality of the diamonds each jeweler carries varies depending on the store.
A diamond certification will also give you indicators about other diamond qualities, such as fire, brilliance and scintillation, also called Return of Light. These qualities refer to how light is refracted back to the viewer when held stationary or when in motion. The certification will also give you a measure of the stones fluorescence. These factors also impact the beauty and brilliance of your diamond.

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By Diamond Specialist, January 14, 2012 6:21 am

Diamonds are one of the few products that
simply cannot be ‘branded.?Even though
there are different cuts, different grades, and
different values placed on each and every
diamond in existence, no diamond is any
specific brand ?just as gold is not a specific
brand.

Branding is actually based on who owns the
diamond. For instance, if DeBeers owns the
diamond, it is a DeBeers Diamond ?but it is
still just a diamond. If the diamond was cut by
a specific well known cutter, then it might be
branded in that way as well ?but it usually
isn’t. It is still branded based on who owns it
at the time. So basically, when it comes down
to it ?diamond brands mean absolutely
nothing at all.

Do not allow a jeweler to try to talk you into
paying an exorbitant price on a diamond
because it is a specific brand. This is a bit
of trickery used by unscrupulous jewelers
when they know that they are dealing with
people who don’t know much about
diamonds. Remember that diamonds are
not actually branded ?unless mother nature
has her own brand!

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By Diamond Specialist, January 11, 2012 6:37 am

The first synthetic diamonds were produced
by General Electric in 1954. A synthetic
diamond is basically a rock that has the
durability, refractive index and hardness of
a natural diamond ?but it is made by man.
A synthetic diamond should not be
confused with stimulant diamonds, such as
glass, cubic zirconia, or moissanite.

Although the technology for synthetic
diamonds came into play in 1954, no
synthetic diamonds were ever seen on the
market until the 1990′s. This was due to the
fact that it took many years for General
Electric to produce a synthetic diamond that
could compare with the quality of a natural
diamond ?and when they figured out how to
do it, they found that it cost more to produce
a synthetic diamond than it did to mine and
cut natural diamonds.

Finally, a small company by the name of
Gemesis Corporation figured out a way to
produce synthetic diamonds that were of the
same quality as natural diamonds, at a
cheaper price. Today, Gemesis produces
synthetic white diamonds, and colored
diamonds as well. These diamonds sell for
about 1/3 of the cost of a natural diamond,
but there is a shortage of them, and they are
hard to find. In fact, it seems that synthetic
diamonds are rarer than natural diamonds!

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By Diamond Specialist, January 8, 2012 6:18 am

There are many reasons why you may want
to sell a diamond that you own. Perhaps
you’ve gotten divorced, or you are strapped
for cash. The reasons why don’t really matter
?getting the best possible price is what
counts! The way to obtain the best price
for the diamond is to not be in a rush. Slow
down, and carefully consider all of your
options ?there are many.

First, have the diamond appraised. In fact,
have it appraised by two or three jewelers to
get an accurate idea of the diamonds value.
Tell the appraiser that you want the Rapaport
Value. This is the wholesale value of the
diamond, and it basically tells you the highest
price that you can sell your diamond for. If your
diamond has no certificate, you should
consider getting a certificate from GIA. This
may help you get a better price for the
diamond as well.

First, try to sell the diamond yourself, to
people you know. Friends and family
members may be interested. If you don’t have
any luck with friends or family members, you
should turn to outside sources. Absolutely
avoid pawn shops! A pawn shop will only offer
you about 10% of what the diamond is worth!
Also avoid offers of selling the ring on
consignment. There are many things that
can go wrong, and there is no shortage of
diamond scams ?even in well known
jewelry stores.

If the diamond is important, you should
strongly consider auctioning it off through
one of the famous auction houses, such as
Christie’s or Sotheby’s. If it isn’t what is
considered an ‘important?diamond or a
high-end diamond, you should try to sell it
to an individual using classified ads, or even
eBay. However, selling to an individual that
you do not know could put you in danger ?
especially if the diamond is worth a lot of
money.

Your final option should be a jewelry store. It
is vital that you not let your diamond out of
your sight while in the jewelry store ?you
might find that the diamond you walked in
with is not the same diamond that you walk
out with! The jeweler will try to tell you that
your diamond is of poor quality or low
weight. Inevitably, there will be some
problem with the diamond. This is where
your appraisal and/or certificate will come
in handy.

If the jeweler is fair, they will offer you
between 60% and 80% of the value of the
Rapaport Value. Do not accept anything less
than this. Again, do not let the diamond out of
your sight until you have been paid for it.

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By Diamond Specialist, January 5, 2012 6:16 am

Insuring a diamond takes a bit of thought,
planning, and shopping around. Diamond
insurance isn’t like purchasing car insurance.
It is quite different. Depending on the state
that you live in, there are basically three
different types of policies that will cover
diamonds, and all insurance policies that
cover diamonds are considered Marine
type policies.

The first type of insurance policies for
diamonds is an Actual Cash Value policy.
If the diamond is lost or damaged beyond
repair, the insurance company will replace
the diamond at today’s market value, no
matter how much you paid for the diamond
to begin with. This type of insurance policy
for diamonds actually is not that common.

The most common type of insurance for
diamonds is Replacement Value insurance.
The insurance company will only pay up to a
fixed amount to replace the diamond that was
lost or damaged beyond repair. This does not
mean that they will pay that amount ?it means
that they will pay up to that amount. In most
cases, the diamond can be replaced at a
lower cost.

The third type of coverage offered for
diamonds is Agreed Value. This is
sometimes called ‘Valued At.?This type of
coverage is very rare. In the event that the
diamond is lost or damaged beyond repair,
the insurance company simply pays you the
amount that you and the company agreed
upon. This is the best type of insurance to
have, but it is rarely offered. If you can’t get
Agreed Value coverage, Actual Cash Value
coverage should be your next choice.

Your rates will be determined by the value of
the diamond, the type of coverage that you
select, and the area that you live in. If you live
in an area with a high crime rate, you can
expect to pay more for your diamond
insurance coverage. It is important to
remember that insurance agents are not
qualified jewelers, and jewelers are not
qualified insurance agents. It is best to get
a certificate for your diamond, and to
provide the insurance company with a copy
of that certificate. This leaves the insurance
company less room for arguments over the
actual value of the diamond.

Don’t rely on separate coverage to cover
your diamond. For instance, if you diamond
is stolen from your home, it is probably
covered on your home owner’s insurance
policy ?but the diamond probably won’t
always be in your home, and once it leaves
your home, there is no coverage.

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By Diamond Specialist, January 2, 2012 6:18 am

Except for most blue diamonds, which are semiconductors, diamonds are good electrical insulators, meaning they reduce the flow of electricity. Blue diamonds owe their semi-conductive property to boron impurities, which act as a doping agent and cause p-type semiconductor behavior. Diamonds appear cold and hard, but they’re good conductors of heat because of the strong chemical bonds within the crystal.

Most natural blue diamonds contain boron atoms which replace carbon atoms in the crystal matrix, and also have high thermal conductivity. Heat is a property contained in most materials, and has the tendency to flow to areas of lesser heat. A substance that is a thermal insulator reduced the flow of heat.

Diamonds are actually excellent conductors of heat, better than more well-known heat conductors like copper or silver. Diamonds will warm-up. It’s as if when we talk about a diamond’s “fire,” it can refer to it figuratively as well as literally!

As much as we associate diamonds for their beauty and use as jewelry, only about 20% of all diamonds mined are gem-quality. The rest are good only for industrial uses. Because it’s the hardest substance, it’s used to cut other materials such as stone, metal and concrete. It’s also used to grind eyeglasses and computer chips.

Most industrial diamonds are mined, but scientists have successfully engineered synthetic industrial diamonds that have more versatile uses than mined diamonds. Now major companies like GE and even DeBeers make synthetic diamonds. The primary use for these synthetic industrial diamonds is to conduct heat away from devices that require a constant temperature for safe and proper operation.