Category Phosphates (minerals) Name in English. Turquoise Formula CuAl6(PO4)4(OH)8 4H2O Group Turquoise group Color Blue,
1. Yellow stones - transparent and opaque - names, properties, photos 2. Varieties of gems
Organic pearls "Mallorca" - know-how of the 20th century. These are natural pearls, consisting of mother-of-pearl, but
Category Oxides (minerals) Name in English. Magnetite Formula FeFe2O4 Group Spinel Group Color Black Color
When choosing a gift for a female relative or friend, or buying jewelry for yourself, you need to take into account the sign
If you have a great love for jewelry, but modest financial resources, a worthy alternative is products
When creating jewelry, craftsmen use a large number of different techniques and techniques: thanks to
In sunlight, the stone takes on a greenish tint; in artificial light, it becomes reddish or purple. Reference
The essence of the refining procedure To obtain pure silver, they are used to clean it from various impurities
Chrysocolla stone, which has many synonymous names (it is called copper malachite, gold glue, green spar and
