What ethical considerations should be taken into account when sourcing and purchasing jewelry, particularly in regard to conflict-free and sustainable practices?
What are the most important factors to consider when purchasing a diamond, and how do the "Four Cs" (cut, color, clarity, and carat) influence its value?
How do the physical and chemical properties of gemstones influence their use in jewelry and industrial applications, and what advancements have been made to enhance or modify these properties?
In terms of historical and cultural significance, how have gemstones been used in different civilizations, and what myths or beliefs are associated with specific types of gemstones?
What methods and technologies are currently used to authenticate and certify the quality and origin of gemstones, and how do they address issues of synthetic and treated stones?
