Archive For The “Top Posts” Category

Diamonds & Colored Stones Grading

By |

Diamonds & Colored Stones Grading

Diamond has remarkable optical characteristics. Because of its rigid lattice, it can be contaminated by very few types of impurities, such as boron and nitrogen. Combined with wide transparency, this results in the clear, colorless appearance of most natural diamonds. Small amounts of defects or impurities color diamond blue (boron), yellow (nitrogen), brown (lattice defects),…

Read more »

Jewellery

By |

Jewellery

Jewellery or jewelry is a form of personal adornment, such as brooches, rings, necklaces, earrings, and bracelets. With some exceptions, such as medical alert bracelets or military dog tags, jewellery normally differs from other items of personal adornment in that it has no other purpose than to look appealing, but humans have been producing and…

Read more »