Kalimaya / Indonesian Opal

1. Kalimaya is kind of gemstones (precious stones) from the group opal, the mineral silica with SiO2.nH2O formula. Not shaped crystals such as quartz (amorphous), has a hardness level of 5.5 up to 6.5 on the Mohs scale.
2. Kalimaya name comes from Banten. Appears and popular since the beginning of this stone quarrying activities in the area Maja, Lebak, Banten. Someone mentioned that Kalimaya derived from the name of the river which time the initial activity Majatempat where rock excavation is done.
3. Kalimaya deployment occurrences are in the District of Maja, Sajira and Cimarga, are in a tile-old rock formations of Pliocene
4. Kalimaya classified into several types such as Kalimaya milk, crystal, tea, chameleon to jarong. In the classification of Australia consists of some kind of basic color, ie ranging from light to black opal opal. But there is also a type of opal, especially those from South America or Africa called fire opal, Kalimaya types of offerings for the fire opal can be synchronized with Kalimaya tea, light opal as Kalimaya milk, while the black opal as jarong.
5. Kalimaya highly appreciated among businessmen gemstones that are more expensive than Australian opal, opal and opal America Africa
6. Among gemstones, opals occupied the place as his Queen of Gems "The Queen of Gems" (Shakespeare) due within one opals can be seen gleaming beauty of other gemstones such as ruby, emerald, topaz, amethyst to sapphire through the colors opal
7. Allegedly mentioned that Mark Antony of Rome, opal ring presented to Queen Cleopatra loves. The price of the ring when disebandingkan, is worth two thousand horses were good at the time. Opal is also an important piece of jewelry worn by Queen Elizabeth I (1533-1603). Similarly, Queen Victoria (1837-1901).

1. Batusempur is fossilized wood terkersikkan with silica composition berformulaSiO2.nH2O;
2. Batusempur name known at first in the eastern part of the district of Lebak and around Jasinga-Leuwiliang, Bogor Regency, West Java;
3. Sempur is the name of a type of wood that is known in the community of West Java and Banten in ancient times. His perfect tree at this time that the Latin name Dillenia suffructicosa a tree species that is very rare;
4. Batusempur in Banten mainly distributed in the district of Lebak. However, also present in Pandeglang, Serang and Tangerang district in the southern part;
5. Rock formations Pliocene to Miocene age (2 to 26 million years) as Bojongmanik formations, formations and tuff tiles Cibaliung is a batusempur or wood fossil occurrences in the province of Banten and West Java;
6. Wood fossil longest ever encountered measuring more than 40 meters from the location Sajira Subdistrict, Lebak. Ciberang watershed is where the presence of wood fossils length
7. In Indonesia, fossil wood is not only known in Banten and West Java, but also in Sumatra and Kalimantan. In Sumatra, mainly in Jambi wood fossil known as the Stone Sungkai taken from the name of the wood. While in Kalimantan, South Kalimantan especially Ulin also named Stone was taken from a timber;
8. Utilization batusempur initially among farmers to hone perlalatan work like hoes, machetes etc .;
9. Batusempur among employers classified into types; beledug, porcelain, semi agate and carnelian. The best quality is the type of agate;
10. Batusempur has a high economic value because it can be used a variety of products ranging from ornaments, souvenirs to household appliances