Sapphire a precious stone

Sapphire is one of the four precious stones. The first color that comes to mind when we refer to it is blue and it owes it to the small amounts of titanium and iron in the mineral corundum. However, in addition to blue, sapphire can have other colors such as...

Emeralds and their value

Emerald is one of the four precious stones. It has a special green color which results from the impurities of chromium in the mineral beryllium. Due to it's color, it create jewelry of exceptional shine and beauty. It is a stone known since antiquity. The first mines where it was...

Pearls, their value and how they are created

Pearls from ancient times are associated with beauty, elegance and purity. In ancient times they were used in medicine believing that they have healing properties and in some cultures that they can lead them to immortality. In ancient Greece, pearls symbolized the tears of the gods. How pearls are created...