Quality factors and levels of marine cultured pearls: color,Pearls the color of marine cultured pearls is divided into the following five series, including a variety of body colors. White series: pure white,Pearls milk white, silver white, porcelain white, etc.
Red series: pink, light rose, mauve, etc.Pearls yellow series: light yellow, beige, golden yellow, orange yellow, etc. Marine cultured pearls may have accompanying colors,Pearls such as white, pink, rose, silver white Or green color.
The surface of seawater cultured pearls may have halo. The halo is divided into strong halo, obvious halo and halo. Description of colors: mainly based on the description of body color,Pearls supplemented by the description of accompanying colors and halo The round, round and nearly round seawater cultured pearls are represented by the smallest diameter,Pearls other shapes of seawater cultured pearls are represented by the maximum size multiplied by the minimum size,Pearls and the bulk beads can be expressed by the pore size range of the pearl sieve.
Shape level, seawater cultured pearl shape level,Pearls shape regular quality requirements (diameter difference %) Remarks: perfect circle A1 ≤1; circle A2 ≤5; near circle A3 ≤10; ellipse B >10 can have drop shape,Pearls pear shape, Flat C has symmetry, one or both sides are almost flat
