A gemstone is a rock, stone or mineral that after being treated, cut and polished can be used in jewelry. Some gems are organic in nature, such as amber, which is nothing more than resin from trees that existed more than 25 million years ago and underwent a process of fossilization forming masses of amorphous structure.

A gem when it is going to be used as a gem is primarily evaluated by her beauty and purity. When a gem is damaged because it spider, breaks or undergoes a micro break, immediately loses much of its monetary value. The characteristics that make a precious stone has value are the coloration, which have a peculiar marquetry (e.g. fossil), producing an unusual visual phenomenon, its scarcity and, sometimes, have a unique and different look.

The gems are divided into two broad categories, the precious and the semi-precious. In this article I will only discuss the four types of gems are precious stones:

1) Diamond: The most valuable are colorless and adamantine brightness. One of the most appreciated qualities of diamonds is his quality of disperse light generating beautiful sparkles. It has a hardness of 10 on the Mohs scale.

(2) Ruby: The rubís are red with glassy shine. They can produce the optical effect known as asterism consisting of the precious gem is needle-shaped inclusions which are oriented in such a way that they form a star (Star rubís). Its hardness is 9 on the Mohs scale.

(3) Sapphire: The sapphires are dark blue. The rubís can go star sapphires (optical effect of asterism). Its hardness is 9 on the Mohs scale.

(4) Emerald: Emeralds are green grass, with glassy shine as the rubís. Its hardness is between 7.5 and 8 on the Mohs scale.

Amethyst, which historically was valued as a precious stone, he lost that category to appear important deposits of this quartz purple and cease to be a scarce commodity.

The use of the silver was given in antiquity manufacturing silver and vessels. The bactericidal power of silver, it was discovered without knowing its causes.
There is the custom of giving a glass of silver to the newborns, allowing mother to give to their drink pure water (photo on the left, Greek vase of silver). The bactericidal action of silver is made thanks to the salts of silver or silver in suspension oxides that break the pathogenic cells membrane, unless these can survive.
To this day the silver oxide is a basic component of antibacterial cream and allows to treat, among other ailments, burns more severe.
There is no irrigation with ingestion of silver, except for an azuleado tone of the skin in cases more severe (the miners that breathe dust of silver in the mines for the example)

To this day, 30% of the silver is intended to process photography. Mainly in medicables x-rays.

It is widely used with other applications: is the metal that better conducts electricity, even taking the silver as a reference to define the conductivity of materials. On a scale of 0 a100, silver has el100, 97 copper and gold 76.
Rechargeable batteries for longer duration and quality lead oxide of silver as a main component. It is the portable type of used batteries in devices of high price, such as spatial instruments, or medical devices.
Silver is the element that best reflects the light. A silver mirror reflect 95% of received light, and part of the use domestically in a mirror, silver is a principal element in the telescopes, and solar panels.

Because it reflects so well light shines, besides being a malleable metal is becoming silver jewellery since thousands of years. Its low price, with gold, explains why it is the preferred metal of many jewelry brands.
Famous brands like Thomas Sabo used exclusively the silver in the realization of their jewels, while for others the silver becomes favorite metal to gold, as the pandora bracelets.
How to clean Silver: silver is oxidized with the contact of air, this article “Clean Silver”, we explain some of the techniques more effective to clean silver. For jewelry in general, this article: clean jewelry of gold and silver.

Initially, Platinum was considered a parasitic metal, this was present the American South gold mines, and it was difficult to separate it from the gold.
Impossible to merge with the techniques of the time, Platinum had no value or use until 1751, when it was recognized as a new element of incredible property: more heavy than gold, impossible to oxidize, and 30 times more scarce than gold.

Such chemical resistance spurred its use in the manufacture of scientific equipment throughout the 18th century.

Tiffany platinum wedding ring
Gradually, the Platinum became interested jewelers, as Marc Janety, Royal Jeweler of Louis XVI, and Pierre Chabaneu, supplier of jewelry for the Spanish Court. Started to use Platinum in the manufacture of buttons, chains of watches and other accessories.

Since the second half of the 19th century, the use of Platinum as a noble metal for jewelry became more common.
It is now the favorite metal for mounting diamonds, being their widespread use in rings of commitments.

Platinum should cost much more than gold (is 30 times more low), but gold and Platinum prices are not so far. The reason is that Platinum has so much industrial uses than gold, which main use is still the jewelry and the minting of coins, which does not cause excessive shortage in the market.

Yellow Gold with stones in Pink Hearts ring or
black. A piece of exclusive design symbolizing love
the more United souls. Elegance and good taste for 735€
the piece.

Miuccia Prada, the same designer earrings I make as a banana or electric guitars during the last spring/summer 2011 collection, has made a curious collection of earrings, leather and strass, clearly influenced by the aesthetics of the House Prada summer Collections.

Proposals in jewels are marked by using bright colors, such as red and green, yel use of rhinestones that adds light to the pieces, which are sized generous, as dictates it the current trend in the fashion world to have recourse to the aesthetics of the 1950s / 60.
The recurrent use of rose jewelry, like earrings already games the gargantilla, brings glamour with a touch of extravagance, with an own house Prada, always away from the conventions of Baroque touch.

Tiffany & Co has launched a new collection that pays homage to the most desirable of diamonds: The Yellow Diamond.

They are extremely rare, only one over 10,000 has a yellow hue, and within this share, very few have the level of quality required for high Tiffany jewelry.

The relationship of the yellow diamond and fine jewelry prestigious firm has its North American Tiffany diamond Tiffany antecedent with a spectacular 128.54-carat yellow diamond, one of the largest ever discovered.

Tiffany designer Elsa Peretti, was famous 30 years ago to launch a yellow diamond jewelry is now a listed piece of jewelry, besides having a timeless style that makes the yellow diamond jewelry contemporary gem.

Bezeta collection presents a round-cut diamonds, oval, bright with pavé white gold or yellow. Each of the jewelry can be worn alone, or form sets dazzling.

The lucky women who can acquire these Tiffany jewelry have secured exclusivity. The Australian mine from which the best diamonds has signed an exclusive agreement with Tiffany for these yellow diamonds.

For the second consecutive year, Lacoste has released a collection of jewelry for men and women. Presentation of some representative pieces of Fall Winter Collection 2012.

Designed by Christophe Pillet, who gave a boost to the brand through its concept stores and fashion accessories like handbags, watches, sunglasses, jewelry collection of Lacoste is to be faithful to the crocodile’s best known brand in the world.

The jewelry line 2012 of  Lacoste winter has the elegant style of the creations in ready-to-wear brand, with a flash of bright colors which is also a hallmark of Lacoste.
And of course the crocodile is omnipresent in the collection!
The collection will be available starting this month, the prices are not reported.

Strong but serene character, with an innovative octagonal box, so is the new Bvlgari Octo Quadri-Retro Chronograph Watch Collection Gérald Genta, new know-how perfect expression that characterizes the world of Bulgari watches and jewelry.

A proposed sports and contemporary complement to the Bulgari watch Octo Bi-Retro, chronograph introduced in 2010, this latest creation perpetuates the style of this great brand of watches in the world deal very exclusive fine jewelry and watches. Made of steel and ceramics.

A large half-arch in the center shows the minutes, with the minute hand that travels along an arc of 210 °. The date is displayed in an arc of 180 degrees at the bottom of the box, surrounded by the counters that indicate minutes and hours. Materials from steel and ceramic.

In jewelry, jewelry for men are appearing sophisticated and elegant. I speak not of the usual lead a discreet gold chain, a brand watch or a gold chain, but a piece of jewelry, silver jewelry often.
From 5 years years and is common to see young man, urban aesthetics and take care of a silver bracelet.
There are several brands that offer jewelry, these are the most beautiful.

It is a thick silver bracelet Miomioparami signature, The bracelet is made of 18k gold, sterling silver and leather high quality beef.

The peculiarity of this brand: her jewelry is not available in jewelry, but directly online. The savings are passed on to the customer, this bracelet is worth € 49 …. bargain …. and I have one on your wrist;)).
For those unfamiliar with the artist, I tell you that is a true expert in the use of silver, and is not an understatement. Silver jewelry works like gold.

What I find striking is how to combine silver with semiprecious stones colorful, especially gold combined law in an enlightened proposal …

This is another British firm Tateossian, another designer that I particularly like, they were the pioneers in the men jewelry. Sold through shops propriety in England and countries such as Japan, and also on line. This particular silver bracelet is made with leather and python very attractive silver closure, € 124.50.

This could define the jewels of French Hervé van der Straeten (1965). Trained at the Ecole des Beaux Arts in Paris, is a designer known for his jewelry collections as well as the creation of gilded bronze ornaments or furniture which he published himself in his own gallery. It is a craftsman with an inexhaustible imagination.

It was opened as a jewelry designer hole in the vicinity of Parisian haute couture for his work in Yves Saint Laurent, Givenchy, Thierry Mugler and Christian Lacroix. In the 90′s gave way to the interior architecture and devised, for example, the shoe boutique in Paris Roger Vivier. And ten years ago opened his gallery in the neighborhood of Le Marais. They sell their pieces, sometimes unique, sometimes limited editions. There are plenty of mirrors, tables and lamps hanging from the ceiling, all exposed as if it were the latest pieces of art. The creations can be seen from the Art Deco overtones, but in others, air baroque or oriental inspiration. The forms: geometric, asymmetric, plants, animals … It’s in Herve.

Its architectural lines and materials processing, as if sculpted, made ​​from pieces of French modern icons. With the style of jewelry that I have found in Van der Straeten, I like the gold again.