- Clarity refers to internal inclusions of a diamond, such as black carbon spots and small cracks.
- Inclusions like air bubbles and mineral deposits also affect the value of a diamond.
- Laser drilling is a technique used to remove black carbon inclusions.
- Laser drilling involves using an infrared laser to create a route of access to the inclusion.
- Sulfuric acid is used to dissolve the black carbon crystal after laser drilling.
- Fractures are common inside diamonds and can affect their beauty.
- Fracture filling makes these fractures less visible to the naked eye.
- The process involves using specially-formulated fillers with a refractive index similar to diamond.
- The Yehuda process, pioneered by Zvi Yehuda, is a popular method of fracture filling.
- The filler used in fracture-filled diamonds can usually be detected by a trained gemologist under a microscope.
Color irradiation and annealing treatments
- Color irradiation and annealing treatments are used to enhance the color of diamonds.
- These treatments can transform yellow and brown diamonds into vibrant fancy colors.
- The CIBJO and government agencies require the disclosure of all diamond treatments at the time of sale.
- Enhanced diamonds are priced lower than untreated diamonds due to their lower quality before enhancement.
- After enhancement, the visual appearance of enhanced diamonds can be as good as non-enhanced diamonds.
Controversy surrounding diamond enhancements
- Some treatments, particularly those applied to clarity, are highly controversial within the industry.
- The controversy arises from the belief that diamonds hold a unique or sacred place among gemstones.
- Radical treatments may damage consumer confidence in the authenticity and value of diamonds.
- The disclosure of diamond treatments is explicitly required by organizations like CIBJO and government agencies.
- The controversy surrounding diamond enhancements highlights the industry's concern for maintaining consumer trust.
Impact on diamond pricing and demand
- Clarity and color enhanced diamonds are priced lower compared to untreated diamonds.
- Enhanced diamonds are initially of lower quality before the enhancement process.
- The lower pricing makes enhanced diamonds more accessible to a wider range of consumers.
- Fracture filling and other enhancements can improve the appearance of diamonds, making them more desirable to jewelers and the general public.
- The demand for fracture-filled diamonds is influenced by their visual improvement and affordability.
Diamond enhancement Data Sources