Christie's auction shall yellow diamond

Christie's auction shall yellow diamond. While 10.13 kt yellow rectangle fresh color VS1 diamond ring, pure color, cut symmetry. Fresh color yellow diamond due to saturation and high net, so the yellow diamond among the most famous. Color yellow diamonds less than 1 percent of global diamond production, and beautiful color yellow diamonds in the market is its duties precious. 

Since 1994 the first National Peking gemstone identification center was approved, has set up a number of accreditation bodies, which in Beijing tiffany and co Beida, large, CIQ, the first four of the larger national scale national testing center, high level. 

* Natural pearls ... onion-shaped opaque layer (aragonite TLC) and a transparent layer (arc or circle-shaped conchyolin layer staggered) alternating structure, sometimes with a small center can be transparent. 

Jade bracelet watch lock crack lock crack when light observation easier to see, but sometimes in the marbled tiffany uk bracelet, color road can easily be seen as lock crack, buyers need to practice the more distinguished. 

Avoid high temperature, or lost due to evaporation of water, ranging from loss of transparency, heavy burst occurred. In addition, opal is not acid, so wear opal jewelry should avoid high temperatures and acidic substances. When the collection of opal jewelry, should also pay attention to the environment can not be too dry, otherwise cracks will cause dehydration and even rupture. To prevent dehydration, in the dry season, every certain period of tim tiffany and co uk e should be opal jewelry on Soak in water once.