Archive for July, 2009
20
Jul

Grossular or grossularite is a calcium-aluminium mineral species of the garnet group with the formula Ca3Al2(SiO4)3, though the calcium may in part be replaced by ferrous iron and the aluminium by ferric iron. The name grossular is derived from the botanical name for the gooseberry, grossulania, in reference to the green garnet of this composition that is found in Siberia. Other shades include cinnamon brown (cinnamon stone variety), red, and yellow. The more common variety of grossular is called hessonite from the Greek meaning inferior, because of its inferior jardness to zircon, which the yellow crystals resemble. Grossular is found in contact metamorphosed limestones with vesuvianite, diopside, wollastonite and wernerite.

 

necklace-of-grossularite-beads

 

Green is both a color and a call to celebrate the natural world. Tiffany answers with the gemstone grossularite, a green garnet. Twenty-four smooth grossularite beads were carefully selected for this elegant necklace. The polished stones are accented with a shell of hand-carved chrysoprase and pink sapphires that ingeniously hides the clasp and is embraced by a sea creature’s dazzling diamond tentacles. This Grossularite Bead Shell Necklace with Diamonds set in platinum is $35,000 on Tiffany’s offical website. The necklace of grossularite beads with shell of hand-carved chrysoprase, platnium-set diamonds and pink sapphires is very beautiful.

17
Jul

Other specialized applications also exist or are being developed, including use as semicnductor: some blue diamonds are natural semiconductors, in contrast to most other diamonds, which are excellent electrical insulators. The conductivity and blue color originate from the boron impurity. Boron substitutes for carbon atoms in the diamond lattice, donating a hole into the valence band.

Substantial conductivity is commonly observed in nominally undoped diamond grown by chemical vapor deposition. This conductivity is associated with hydrogen-related species adsorbed at the surface, and it can be removed by annealing or other surface treatments.

Toughness relates to a material’s ability to resist breakage from forceful impact. The toughness of natural diamond has been measured as 2.0 MP a.m, and the critical stress intensity factor is 3.4 MN.m. Those values are good compared to other gemstones, but poor compared to most engineering materials. As with any material, the macroscopic geometry of a diamond contributes to its resistance to breakage. Diamond has a cleavage plane and is therefore more fragile in some orientations than others. Diamond cutters use this attribute to cleave some stones, prior to faceting.

 

jean-schlumberger-three-leaves-ear-clips

 

So often Jean Schlumber finds inspiration in nature’s forms. This pair of Three Leaves ear clips in 18k gold with round brilliant diamonds in platinum is also from the nature form-leaves. Carat total weight is 3.50. It is $13,500 in Tiffany’s website.

17
Jul

The hardness of diamonds contributes to its suitability as a gemstone. Because it can only be scratched by other diamonds, it maintains its polish extremely well. Unlike many other gems, it is well-suited to daily wear because of its resistance to scratching—perhaps contributing to its popularity as the preferred gem in engagement or wedding rings, which are often worn every day.

Industrial use of diamonds has historically been associated with their hardness; this property makes diamond the ideal material for cutting and grinding tools. As the hardest known naturally occurring material, diamond can be used to polish, cut, or wear away any material, including other diamonds. Common industrial adaptations of this ability include diamond-tipped drill bits and saws, and the use of diamond powder as an abrasive. Less expensive industrial-grade diamonds, known as bort, with more flaws and poorer color than gems, are used for such purposes.

Diamond is not suitable for machining ferrous alloys at high speeds as carbon is soluble in iron at the high temperatures created by high-speed machining, leading to greatly increased wear on diamond tools when compared to alternatives.

 

jean-schlumberger-apollo-ear-clips2

This is Jean Schlumberger Apollo ear clips inspired by electrons orbiting in the nucleus of an atom. This pair of ear clips is in 18k gold with round brilliant diamonds pave-set in platinum. Carat total weight 5.69. It is $20,000.

16
Jul

Diamond is the hardest natural material known, where hardness is defined as resistance to scratching. Diamond has a hardness of 10 (hardest) on Mohs scale of mineral hardness. Diamond’s hardness has been known since antiquity, and is the source of its name. The hardest natural diamonds in the world are from the Copeton and Bingara fields located in the New England area in New South Wales, Australia. These diamonds are generally small, perfect to semiperfect octahedra, and are used to polish other diamonds. Their hardness is associated with the crystal growth form, which is single-stage crystal growth. Most other diamonds show more evidence of multiple growth stages, which produce inclusions, flaws, and defect planes in the crystal lattice, all of which affect their hardness. It is possible to treat regular diamonds under a combination of high pressure and high temperature to produce diamonds that are harder than the diamonds used in hardness gauges.

 

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This is Jean Schlumberger Dahlia Clip which comes from Schlumberger’s garden of spectacular diamond flowers. This clip is in 18k gold with an emerald and round brilliant diamonds in platinum. The emerald, carat total weight 5.38; round brilliant diamonds, carat total weight 13.27. It is $275,000.

15
Jul

From at least the fourth century BC, India traded in wholesale diamonds, taxed them and exported them. There had long been trade in diamonds between India and Babylon, Mesopotamia, Syria, Israel, Egypt, Ceylon, and Arabian countries. Diamonds that reached the western part of the Roman Empire were prized for their magical powers, but Rome also re-exported the diamonds to China as tool bits set in iron holders for cutting jade and drilling pearls during the first five centuries AD. There were no superstitions about diamonds in China to deny this use and, even as tools, they were still regarded as presents fit for kings, according to the Chinese philosopher Lao-tse in the first century AD.

jean-schlumberger-diamond-two-fish-broochThe Arabs and Persians monopolized trade between the Roman Empire and East Asia and, during the middle ages, between Europe and East Asia until the sea route to India was discovered. It appears that they retained for themselves many of the finest diamonds from India and sold the poorer and smaller ones. The Arab, Teifaschius, issued the earliest diamond price list ever discovered in the twelfth century.

The art of paillonné enameling, laying enamel over gold leaves, was revived and perfected on the graceful curves of this whimsical design. Brooch with round brilliant diamonds, cabochon pink sapphires and blue enamel in 18k gold and platinum. $105,000

14
Jul

Diamond’s effect on history has been mainly because they are possibly the greatest concentrated form wealth which is negotiable and redeemable almost anywhere. Diamonds have played a part in many upheavals and, during recent world wars, paid the way for the escape of refugees from totalitarian tyrannies.

The Koh-i-Nur Diamond, or Mountain of Light, has longest history of all famous diamonds, as it was known to be in the possession of the Rajahs of Malwa as long ago as 1304. The 410-carat Regent Diamond played a part in the French Revolution. It was one of the last big diamonds to be found in India, in 1701. The Hope Diamond, to which stories of tragedy has become attached, is supposed to have been part of the famous Blue Tavernier diamond brought to Europe by the French traveler Jean Baptiste Tavernier.

 

jean-schlumberger-flower-top-ear-clips2

Tiffany’s Jean Schlumberger loved to design whimsical settings for fabulous stones. Flower Top ear clips in 18k gold with pink spinels and diamonds set in platinum.

Pear-shaped pink spinels, carat total weight 27.80; round brilliant diamonds, carat total weight 1.01. $145,000

13
Jul

The history of wearing diamond jewelry is as ancient a custom as any on record. Diamonds appeared in early history to be of primary importance, after the seeking of food and shelter, within societies. It has been assumed that the wearing of diamonds was originally motivated by a desire to remember the spring with its promise of food and warmth, and later in history, the diamond became a personal adornment, a symbol of rank and wealth.

Throughout history, rulers wore large diamonds as badges of rank. Diamonds were also convenient “portable” wealth in the early days of India. Most of the historical diamonds that still exist are Indian, and all have eventful and sometimes bloody histories. The French traveler Jean Baptiste Tavernier brought a number of them to Europe.

 

jean-schlumberger-plumes-necklace

Truly a Schlumberger design masterpiece, inspired by the plumage of an exotic creature. Necklace of rubies, sapphires and round brilliant diamonds in platinum with 18k gold. 16″ long. Rubies, carat total weight 37.47; sapphires, carat total weight 15.93; round brilliant diamonds, carat total weight 19.50; square diamonds, carat total weight 3.25. $450,000

13
Jul

tiffanys-show

 

TIFFANY’S SHOW is the First ever truly transvestite cabaret show in South East Asia. With over 28 years of stage experiences, the fame of TIFFANY’S SHOW is undeniable and become a recommended tourist destination of the successful growth of Thailand’s most popular resort city , Pattaya City. Millions of international visitors from every part of the world had experienced our spectacular performances and enjoyed our marvelous, talented and beautiful TIFFANY’S performers.

Back in 1974, TIFFANY’S SHOW has started the performance in a small stage at the south-end of the Pattaya coast with only 3 performers who loved to perform their talents as many famous pop-divas of New-York Broadway like Barbara Strisand or Donna Summer, etc. Growing popularity among tourists enormously, TIFFANY’S SHOW moved to the unique and elegant-style theater (1,000- seat capacity) fully equipped with modern light & sound stage equipment. Over 100 professional performers in dazzling costumes have astonished audience with a memorable life-time experience that you won’t believe that the spectacular show like Paris shows is in Thailand. It is the indeed show for the entire family!

Nowadays, TIFFANY’S SHOW is a palace of decadence, spectacular elegance, and enjoyment not to be missed if you come to Pattaya City.

10
Jul

During the French Revolution, the Blue Tavernier diamond was stolen and in 1830, Henry Thomas Hope bought a slightly smaller stone of the same color and beauty. It is suspected that the gem known as the Hope Diamond was cut from the Blue Tavernier sometime after the revolution. After Hope died, the diamond passed through a few other hands and each person who owned it lost his or her fortune, including the stone itself. As a result, no one would touch it by the time it went on sale in New York City. It now resides in the Smithsonian Institute in Washington, D.C.

Diamonds come in a variety of colors, from the transparent diamonds that we think of as engagement rings to startling blues to luminescent pinks. They are treasured stones in industry and in jewelry. Fortunately, modern technology can now manufacture sufficient quality diamonds for most necessary industrial uses, but it remains to be seen if it will ever catch up in making gem quality stones. If it does, it’s anyone’s guess whether the diamonds will lose value just as they become widely available.

 

jean-delicate-butterfly-clip

Delicate butterflies designed with Schlumberger’s signature attention to detail. Clip with oval pink tourmalines, pear-shaped amethysts and round brilliant diamonds in platinum with 18k gold. Oval pink tourmalines, carat total weight 6.30; pear-shaped amethysts, carat total weight 6.74; round brilliant diamonds, carat total weight 1.53. $30,000

09
Jul

For centuries, people thought that only India was home to diamonds, but when they were found in Brazil around 1726, the industry moved to South America. It was a short-lived dominance, however, as the discovery of (relatively) immense supplies of diamond were found in South Africa in 1867. Since that discovery, the African continent has been the primary supplier of the world’s diamonds. It was also that discovery, which led to the European conquest of the continent during the nineteenth and twentieth centuries.

While almost every cut diamond is a coveted item, some diamonds are of such magnitude or beauty that they have captured the hearts and imaginations of countless people. Among these is the Star of Africa (also known as Cullinan I), which at 530.2 carats is the largest cut diamond. It was cut from a 3106-carat stone and is now on the Royal Scepter of Great Britain. A great deal of mystery surrounds the Great Mogul, which is the third largest gem quality diamond known, but which’s whereabouts are currently unknown. Named for Shah Jehan (who built the Taj Mahal), it disappeared in the twentieth century. The inaptly named Hope Diamond is also the subject of much controversy.

 

jean-green-tourmaline-diamonds-ring

An exquisite green tourmaline is enveloped in an embrace of brilliant diamonds. Ring with an oval green tourmaline and round brilliant diamonds in platinum. Oval green tourmaline, carat total weight 4.32; round brilliant diamonds, carat total weight .80. $22,500

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