CBJ Study Guide 2026
Everything you need to pass the CBJ exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CBJ Exam Format at a Glance
📚 CBJ Topics to Study (69)
✍️ Sample CBJ Questions & Answers
1. A ring shank measures 1.2mm at its thinnest point. This assessment indicates:
A shank thinner than 1.5mm is typically considered at-risk for breakage and should be disclosed to the customer before repair or sizing.
2. Which of the following is a sign of poor solder flow in a bezel setting?
Pitting or voids at a solder seam indicate incomplete solder flow, often caused by insufficient heat or contamination.
3. Which gold alloy exhibits a greenish hue due to a high silver content?
Green gold, historically called electrum, is alloyed with a high percentage of silver, which imparts a greenish tint.
4. Which OSHA Hazard Communication standard requires chemical manufacturers to provide Safety Data Sheets (SDS)?
OSHA's Hazard Communication Standard (HazCom) at 29 CFR 1910.1200 requires SDS for all hazardous chemicals in the workplace.
5. What does a 'satin finish' look like on jewelry?
A satin finish is achieved by brushing or abrading the metal to produce a soft, uniform, non-reflective sheen.
6. How should a jeweler assess whether a customer's piece has been previously repaired with base-metal solder?
Acid testing on a filed area near a seam will react to base-metal solder differently than precious metal solder, revealing its composition.