Tuesday, October 29, 2019
Sunday, October 27, 2019
Friday, October 25, 2019
Thursday, October 17, 2019
Wednesday, October 16, 2019
Tuesday, October 15, 2019
Sunday, October 13, 2019
Saturday, October 12, 2019
Thursday, October 10, 2019
Wednesday, October 9, 2019
Tuesday, October 8, 2019
Monday, October 7, 2019
Sunday, October 6, 2019
Saturday, October 5, 2019
Friday, October 4, 2019
Wednesday, October 2, 2019
Black pearls are formed when that piece of sand gets stuck in the body of a very specific type of oyster, the Tahitian black-lipped Pinctada margaritifera. The interior shell, called the nacre, of most oysters is usually a glossy white or silver but the Tahitian black-lipped oyster features a thick band of black.Nov 15, 2010
Tuesday, October 1, 2019
Indonesia and Australia are the major producers of white 'South Sea pearls' from the silver or gold-lip pearl oyster Pinctada maxima (Southgate et al. 2008a), that are the largest and most valuable of culture pearls. Indonesia currently produces almost 4 t of cultured pearls from P. maxima per annum.Nov 27, 2018
Subscribe to:
Posts (Atom)
-
https://books.google.lk/books?id=IOEDAAAAMBAJ&pg=PA112&lpg=PA112&dq=why%20diamond%20gem%20inclsions%20do%20not%20give%20a%20star...
-
Diamonds in India are found in compact sandstones and conglomerates; either on the surface of these rocks or in the sands and gravels ...
-
Kaizen is a Lean manufacturing tool that improves quality, productivity, safety, and workplace culture. Kaizen focuses on applying small, ...