the characteristics of black opal Kalimaya good

Kalimaya black stone is a stone that is much-loved people. In Indonesia, black opal is found in Lebak Banten, West Java. This place is rich in silica and quartz.

Structure and texture of rock formed at low temperatures generally have cracks around it. Therefore, this stone entry into the kategorian fairly soft rock with a hardness between 5.5 to 6.5 mohs. Of the overall weight of opals, 6% to 10% is in the form of water. In contrast to the harsher Bacan stone with a hardness of 7 to 7.5 mohs. With a softer texture that is owned by this stone, then how to treat them any differently with agate / Precious in general.

Kalimaya beauty black opal stone is visible when exposed to light. Black opal will emit a colorful glow awesome. This light is commonly called by the name jarong or Flower. Colorful contained in the black opal stone depending on the region or neighborhood in which the rock was formed. The most common color possessed this stone is white, gray, orange, bright yellow, orange, red, blue, brown, purple, magenta, red rose, green and black.

The black opal is the most widely sought after at the moment is a stone Kalimaya derived from Banten which has a black background with color flowers jarong very colorful contrast. Just like rock Bacan which has its own fans overseas, local stone has been sold to various countries in the world and at a price tag of tens to hundreds of millions of dollars.

 In addition jarong flower with red color composition of many other colors are also popular is the opal that emit purple and bright blue. The color of the demand because it is considered beautiful colors but still quite rare found in opals. Currently black opal can be found in various countries in the world that such as India, Egypt, Australia, Mexico and Indonesia.

Black opal Kalimaya quality

• Fiber fine stone and pores are not visible surface section (His perfect stone has pores that if pemolesannya good then these pores will be closed perfectly)
  •  Black opal has two kinds of criteria, there are opaque when illuminated with a flashlight (usually black opal porcelain that is so), and there is also a solid and opaque color flashlight / opaque (generally is still a material).
  When scratched with sandpaper, black opal residues not black.Surface Kalimaya nice opals will look like glazed ceramic when formed.
• As the name implies, stone black opal has a black background with color play a variety of colors. Although the mohs scale of 5.5 to 6.5, but the rock remains solid and not fragile if scratched. In contrast to synthetic stones made of glass / crystal that will easily scratched if exposed to hard objects on the surface.
  • Opal Kalimaya nice to have a complete color and issue a lustrous colors (jarong) like a diamond.  

Opal Stone

Opal has a value of 5.5-6.5 hardware based hard Mohs list, they occupy at number eight. Its composition was rather simple: kiezelzuur and water and a variety of metals that cause opals reflect the wide range of colors. From all sorts of variations in color, opal red and black are the most rare and white and green are the most common. Opal stone which has the basic black background is more valuable than white. But of all of them reflecting the opal stone variegated colors are the most valued. Since one of the composition of opal it is water (3-10% even up to 20%) so be careful not to let this stone to become too dry because it will be easy to crack, also do not hit too hard because of that. Opal stone is also a national of the country of Australia. Opal also much favored by kings and nobles.

The gem opal iridescence is caused by fine silica granules arranged very neatly and bend light and transmit functions, causing popping rainbow colors when viewed from different angles.

There are several types of opal, known as the general public:

Common opal : Opal color that does not show the game at all.

White opal : opal white, gray, milky white, with little or no color game at all.

Black opal : opal color rather dark blackish or brownish color to the game, thus making it more contrast.

Boulder opal: opal that is still attached to the rock.

Matrix opal: opal that is still attached to the rock as lines or patches of color.

Fire opal: opal opaque or slightly translucent red, orange, yellow or brownish color with little or no game at all.

Opal Stone Kalimaya

Opal Stone does have a magical appeal and very strong physically. Although not included precious stones with high levels of violence experienced opal luster can dazzle with twinkling lights of flower jarong her. In Indonesian opal also called the Kalimaya. Banten Kalimaya opal or call it moyo. Opals in Indonesia recently discovered in Banten in the surrounding watershed Mojo. To search for opal miners in this area must dig deep as to make a well. If you do not want to hard-hard enough cruising in the flow

Mojo river, if lucky to find plates of stone or wood and fossil bones with opals Kalimaya stuck in a niche or hole in the objects.Opal Stone Kalimaya of Indonesia is one of the best types of precious stones and the most requested. 

In the market for Kalimaya opal is relatively more expensive than the African opal and Australia.ini possibly due to not terexploitasinya sources Kalimaya deposit precious opal or opal deposits Kalimaya indeed limited.Sebab if the comparison in terms of color and beauty of the opal Kalimaya much prettier and charming.