5%of the wildlife of the island is totally unique to the island. Madagascar is a heaven for those who love the great outdoors. It is a land of diversity and contrast. It is like a kaleidoscope of nature-an eye candy for the nature lovers and...英国华人论坛
© 2004 gggems.com All rights reserved. (Na, Li,Ca) (Fe2, Mg, Mn, Al)3 Al6 I(OH)4 I (BO3)3ISi6O18I · Crystallographic properties: Trigonal. Hardness 7 - 7.5 Density 3.02 to 3.26 Refractive index: 1.62 - 1.64 · Chemical Properties: Alumina...英国华人论坛
© 2004 gggems.com All rights reserved. AL2O3 Sapphire found in a metamorphized limestone. · Crystallographic properties of corundum: Trigonal.c = 1,3630 pp 0 86°4' ; pa1 = 122°26' Macle according to p (1011), often polysynthetic, accompa...英国华人论坛
© 2004 gggems.com All rights reserved. Crystalline System: cubic. Red - violetish: Hardness Density Ref.Index Pyrope Mg3Al2Si3O12 7,25 3,58 g / cm3 1,714 Almandine Fe3Al2Si3O12 7,50 4,32 1,830 Rhodolite Mg,Fe3Al2SiO12 7,25 3,78 - 3,90 1,74-...英国华人论坛
© 2004 gggems.com All rights reserved. MADAGASCAR GEM SAFARI 2 Sapphire from Maromby in a metamorphic limestone. ( Andranondambo area.) Looking for sapphire on the ground in 1992. Sapphires from Andranondambo, discovered in 1991. ( South-Ea...英国华人论坛
© 2004 gggems.com All rights reserved. ILAKAKA · The plateau of Ilakaka in 1992. Ilakaka is located on the road to Tulear, south-west of Madagascar. The discovery of sapphire in the current of 1998 transformed the area. · Ilakaka in 1999....英国华人论坛
( SiO2 ) © 2004 gggems.com All rights reserved. (Variety of Quartz) · Crystallographic properties: Trigonal System (Subdivision of the hexagonal system) Quartz forms hexagonal prisms at the blunted ends and the head finishing in hexagonal...英国华人论坛
Madagascar, a tear-drop shaped nation off the eastern coast of Africa boasts of its rich wildlife and natural resources. From baobab trees to lemurs, this place is home to almost 5 percent of all animal and plants. Because of its being separ...英国华人论坛
Madagascar, the world's fourth largest island is home to many diverse species of plants and animals, which have evolved in isolation since a very long time. Its volcanoes, green natural surroundings and natural reserves make the visit to thi...英国华人论坛