There are natural, naturally grown and cultured pearls. Grow this gem began a very long time. For shellfish favorable conditions and carefully placed in the sink foreign body. This technology allows us to obtain quality and stunningly beautiful pearls.
The most expensive stones are spherical and pure color. Their price is comparable to the cost of diamonds, emeralds, rubies and sapphires. Quality pearls evaluated in alphabetical classification system from A to D. The stones of the highest value of each class AAA, they occur less frequently.
In the jewelry at a lower price using lower quality pearls. Before purchasing you need to check the stone on some basic characteristics that form the value of the product.
The thicker the layer of nacre around the object, the better iridescence, luster and durability. Excellent quality is characterized by bright luster, low - matte loose surface. Pay attention to uniformity, intensity modulations.
The surface of a good pearl should be smooth, free of defects. The best option - a product without stains, chips and cracks. The shape of the stone can be round, oval, teardrop, flat or pear. Perfectly round pearl - a rarity, it is very expensive.
There are many shades of pearl: white, cream, pink, coffee, blue, gold, purple, gray, anthracite and many other colors. The average size of 6-8 mm stone, sea - there are up to 20 mm. River pearls have irregular shape and cost a lot less.