Fluorescence
Fluorescence is a natural property of some diamonds that makes them glow under ultraviolet (UV) light, usually with a blue color. This is like how some white clothes glow brighter under club lights. In the diamond industry, workers need to understand fluorescence because it can affect a diamond's appearance and value. Some customers prefer diamonds with no fluorescence, while others don't mind it or even like it because it can make some diamonds appear whiter in daylight. People working with diamonds need to be able to detect and grade fluorescence levels (from None to Very Strong) as part of quality assessment.
Examples in Resumes
Certified in detecting and grading Fluorescence levels in diamonds using industry-standard UV equipment
Trained junior staff in evaluating diamond Fluorescence and its impact on pricing
Developed customer education materials explaining diamond Fluorescence characteristics
Typical job title: "Diamond Graders"
Also try searching for:
Where to Find Diamond Graders
Professional Organizations
Online Communities
Job Resources
Example Interview Questions
Senior Level Questions
Q: How do you train staff to accurately grade diamond fluorescence?
Expected Answer: A senior grader should explain their method of teaching others to use UV lamps properly, compare different fluorescence intensities, and understand how fluorescence affects diamond value and marketability.
Q: How do you handle disagreements about fluorescence grading between team members?
Expected Answer: Should discuss standardization procedures, use of master stones for comparison, and importance of consistent lighting conditions. Should mention documentation and team calibration processes.
Mid Level Questions
Q: How does fluorescence affect diamond pricing?
Expected Answer: Should explain how different levels of fluorescence can impact diamond values, market preferences, and how to adjust pricing based on fluorescence strength and color.
Q: What equipment do you use to test diamond fluorescence?
Expected Answer: Should describe proper use of UV lamps, viewing conditions, and safety procedures. Should mention importance of standardized lighting and comparison stones.
Junior Level Questions
Q: What is diamond fluorescence and how do you detect it?
Expected Answer: Should explain that fluorescence is the glow some diamonds show under UV light, and describe basic testing using a UV lamp in a controlled environment.
Q: What are the different grades of fluorescence?
Expected Answer: Should list the standard grades: None, Faint, Medium, Strong, and Very Strong, and be able to explain basic differences between them.
Experience Level Indicators
Junior (0-2 years)
- Basic fluorescence detection
- Understanding of fluorescence grades
- Use of UV testing equipment
- Basic diamond examination skills
Mid (2-5 years)
- Accurate grading of fluorescence intensity
- Understanding of pricing impacts
- Client communication about fluorescence
- Quality control procedures
Senior (5+ years)
- Training and supervision of graders
- Advanced assessment techniques
- Market trend analysis
- Standard setting and quality management
Red Flags to Watch For
- Unable to properly use UV equipment
- Confusion between fluorescence and other diamond characteristics
- Lack of knowledge about industry grading standards
- No understanding of how fluorescence affects diamond value
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