What is fire agate and why it is not or… Fire agate is a rare variety of chalcedony, or microcrystalline silica, but it…
What a stone certificate really is and… In the practice of selling jewelry with natural stones, the question of certifi…
What natural stone really is Natural stone is not a material designed for sale, photography or uniform visua…
Sapphire without legends and simplifica… Sapphire is one of those stones that function in the collective imagination as…
