VIP Exclusive
CBJ Certified Bench Jeweler VIP Practice Exam
CBJ — The Certified Bench Jeweler (CBJ) credential is issued by Jewelers of America (JA); the exam includes both a written knowledge test (covering metals, soldering, stone setting, sizing, finishing, and tool use) and a practical skills assessment, and sits in the middle tier of JA's five-level bench certification ladder (CBJT → CBJ → CSBJ → CMBJ).
30
Questions
90m
Time Limit
75.00%
To Pass
Question 1 of 30👑 VIP
A customer brings in a 14-karat yellow gold ring that needs to be sized up by two full sizes. When you cut out the sizing section and measure the stock needed, you calculate the insert piece must be 6 mm long. After soldering the insert with hard solder and pickling the ring, you notice a slight color mismatch between the insert and the shank. What is the most likely cause?
Questions 2–30 and full explanations are VIP-exclusive.