Sunday, September 19, 2010

Ssapphire





Sapphire is the official birthstone for the month of September as adopted by the American National Association of Jewelers in 1912. It is also one of the birth stones for the Zodiac signs of Pisces, Taurus, Virgo and Sagittarius. Sapphire is given as a gem for the 5th, 23rd and 45th wedding anniversaries while a star sapphire is given on the 65th wedding anniversary.
Sapphire is the non-red variety of corundum (the red variety of corundum is ruby). 
9.0 on the Mohs scale of hardness, sapphire is the second hardest natural mineral.
      Blue is by far the most popular color for sapphires, but they can be almost any color, including yellow, green, white, colorless, pink, orange, brown, and purple. Padparadscha is the name for a rare orange-pink variety of sapphire and has a higher value than blue sapphires.
Sapphires with inclusions of tiny, rutile needles exhibit an optical property called asterism. This is the star shaped effect seen in star sapphires and is usually only seen in cabochon cuts.
Star sapphires usually have six ray stars, but twelve ray stars are also known. Rarely, when sapphires are cut en cabochon, they can demonstrate a cat's eye effect. This effect displays a thin band of light down the center of the stone and is known as chatoyancy.
      Heating colorless and very pale blue sapphires to high temperatures is done to give them an intense blue color This treatment can also improve the clarity of the stones by removing tiny inclusions.
                  A rare variety of sapphire, known as color changing sapphire, exhibits different colors in different light. A color change sapphire is blue in natural light, and violet in artificial light. A similar effect is also seen in alexandrite.Sapphire was first created synthetically in 1902 and is hard to distinguish from natural sapphires except by gemologists. Lab grown sapphires range in price and smaller stones are frequently used in less expensive jewelry.

Rubys

Emerals

sky blue topaz

Yellow Topaz

Topaz is the birthstone of November (yellow topaz) and December (blue topaz), it is a talisman for the sign of Sagittarius and the suggested anniversary gemstone for the 4th, 19th or 23rd year of marriage. The name topaz comes from the Sanskrit and means fire.
Topaz occurs in a wide range of colors including red, orange, peach, pink, gold, yellow, brown and clear and is found in Brazil, Sri Lanka, Pakistan and Russia. Naturally pale to medium blue topaz is enhanced by irradiation to produce a more intense blue color.
Red and pink topaz gems were used in the jewelry of the 18th and 19th Century Russian Czarinas and is why topaz is sometimes called "Imperial Topaz".
The most famous topaz is actually a colorless topaz that was originally thought to be a diamond. It is a 1680 carat stone known as the "Braganza Diamond" set in the Portuguese Crown Jewels. Another beautiful topaz is in the Green Vault in Dresden which has one of the world's most important gem collections. Although topaz is a very hard gemstone, at an 8 on the Mohs scale of hardness, it can be split with a single blow and should be protected from hard knocks!.

Amethyst


Amethyst is the official birthstone for February as adopted by the American National Association of Jewelers in 1912. It is also the birth stone for the Zodiac sign of Pisces.Amethyst is suggested as a gem to give on the 4th, 6th and 17th wedding anniversaries. Amethyst is the purple variety of quartz and the most valued member of the quartz family. It must be purple to be amethyst, but it can display a range of shades including deep purple, light lilac, lavender and mauve. Top quality amethyst is a deep medium purple with rose-colored flashes. Its purple color made it a stone of royalty for many thousands of years. Amethyst can occur as crystals that are six sided on either end. It also forms as drusy which are crystalline crusts covering the host rock. It is found inside geodes and in alluvial deposits all around the world and occurs in both crystalline or massive forms. When manganese is present in clear quartz amethyst is produced, while the amount of iron contained in the specimen accounts for the depth of purple.
mohs scale of hardness is 7.
Most amethyst gemstones on the market today are heat-treated to produce a deeper color. Heat treating is permanent and these stones will not fade over time. Unless otherwise stated, assume that any amethyst you purchase today has been heat treated to increase the depth of color. Also, note that most citrine available on the market today is actually heat treated amethyst.

 Amethyst folklore:
Throughout history amethyst has been used to guard against drunkenness and is thought to be helpful in overcoming addiction. It has been used for hearing disorders, insomnia, headaches and other pain. Some sources suggest it is used to stabilize mental disorders.
Worn to make the wearer gentle and amiable. Amethyst powers include: dreams, healing, peace, love, spiritual upliftment, courage,  psychism, protection against thieves, and happiness.

Amatreen

 i will enter more info when i get back on going to bed for a few hrs

Saturday, September 18, 2010

Pyrope Garnets

  okay i have 43 pyropes! I will not be posting pic's of them all however, will post a pic to show  you what they should look like   my largest is a 1.10ct  pear its a 8.01x6.06. the rest are smaller and mixed shapes  here is a key to my shapes  P= pear, T= trillion,O=oval, RD= round, Sq= square, C= cushion, F= fancy cut, E= emerald cut,

Rhodolite Garnets

 these are my Rodolites,  the Trillions are both  3x3x3 mm, .45ct each the round is 2mmm, .40ct, and the pear shape is  a 4x2mm and .45 ct