These natural Silver White Pearls originate from China and their total weight is about 6 carats. The measurements are 6.1mm x 0mm (diameter x depth). The shape/cut-style of these Pearls is Drilled Sphere. These 5.53ctw Pearl gems are available to order and can be shipped anywhere in the world.
Cultured freshwater pearls are produced by mollusks, but the process is started by human intervention. Cultured reshwater pearls are less expensive because they are faster to produce with higher yields per mollusk. More about treatments
Pearls are products of bivalve mollusks (mainly oysters and mussels). They are built up of nacre (mother-of-pearl), which is mainly calcium carbonate in the form of aragonite crystals, and an organic horn substance known as conchiolin that binds the microcrystals concentrically around an irritant. Although pearls are not especially hard, only about 2.5 to 4.5 on the Mohs scale, they are extraordinarily compact and very difficult to crush.
The typical pearly luster is produced by the overlapping platelets of aragonite and film of conchiolin nearest to the pearl surface. The color of pearl varies with the type of mollusk and the water, and is dependent on the color of the upper conchiolin layer. Pearls may be natural (occuring without human intervention) or cultured; and they may occur in the ocean or in freshwater.
I have purchased many gems from this company and am always very pleased with the quality of gems and their cuts. Each time I am pleasantly surprised by how quickly I receive them! I will order again and again. Always very happy with them!!
I have just started setting my own stones and have found that buying stones that do not have the size or are advertised as "mm varies" are very difficult when finding correct setting and I end up with extra settings and no stone for them. I am grateful that this site has such clear/concise information for their stones.