Gemmology
Biogenic Gem Materials & CITES
Until very recently the gem materials formed in living organisms used in jewellery and objects d’art were collectively known as "organic gems". Since 2017 CIBJO, the World Jewellery Confederation, recognizes...
Biogenic Gem Materials & CITES
Until very recently the gem materials formed in living organisms used in jewellery and objects d’art were collectively known as "organic gems". Since 2017 CIBJO, the World Jewellery Confederation, recognizes...
Precious Corals an Overview
Along with other biogenic substances, precious corals are among the oldest gem materials used by humankind since the Iron Age. The material corresponds to the bio-mineralized exoskeleton of limited numbers...
Precious Corals an Overview
Along with other biogenic substances, precious corals are among the oldest gem materials used by humankind since the Iron Age. The material corresponds to the bio-mineralized exoskeleton of limited numbers...
Missing Gaps in Gemmological Terminology?
There are a few trade names and expressions that are not exactly accurate if we look at them in a very strict way. However, written or verbal tradition have given...
Missing Gaps in Gemmological Terminology?
There are a few trade names and expressions that are not exactly accurate if we look at them in a very strict way. However, written or verbal tradition have given...
The Colourful World of Gem Garnets
In the gemological world, there are minerals that offer a vast number of differently colored gem varieties. Garnets are a rather interesting and fascinating case. Gem- stones belonging to this...
The Colourful World of Gem Garnets
In the gemological world, there are minerals that offer a vast number of differently colored gem varieties. Garnets are a rather interesting and fascinating case. Gem- stones belonging to this...
Gemmological Nomenclature vs Scientific Nomencl...
Gemmology studies the materials that are set in jewellery (with the exception of metals) which are also study subjects of other disciplines, like mineralogy, geology or biology, where there are...
Gemmological Nomenclature vs Scientific Nomencl...
Gemmology studies the materials that are set in jewellery (with the exception of metals) which are also study subjects of other disciplines, like mineralogy, geology or biology, where there are...