Hard stones have always offered chromatic effects of incomparable splendor—not only in jewelry such as necklaces or hard stone earrings, but also in monumental decorations that have shaped the history of art. From floors and façades to intricate inlays, these materials have adorned churches and noble palaces across Europe since the Renaissance. Thanks to Italian […]
Tag Archives: semiprecious stones
Turquoise is a hydrated phosphate of aluminum and copper, it is an opaque mineral that has colors ranging from uniform blue to green or with brown or black veins. As it is a very porous mineral, its original color can change easily. And this is why, to protect its surface, treatments are carried out during […]
The difference between precious stones and semi-precious stones essentially lies in their rarity. Stones like diamond, ruby, or emerald are rare and, consequently, have a high market value. For this reason, semi-precious stones, which are more abundant in nature, have a lower value despite their characteristics. In fact, a semi-precious stone, both physically and aesthetically, […]
Many semi-precious stones are defined, in gemology, as semi-precious stones referring to some specific categories of stones. Some others, rarer to find, such as diamonds, emeralds, rubies and sapphires are defined as precious stones. However, this categorization is a practice that has become current even though it does not have an effective scientific motivation. For […]

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