CBJ Skills and Expertise 3

Question 1

When channel-setting square princess-cut stones, what is the most critical measurement to verify before setting?

Accepted Answer

The stone width versus channel width tolerance

Answer

The total carat weight of all stones combined

Answer

The girdle thickness of each stone

Answer

The table percentage of the center stone

Question 2

Which finishing technique is used to create a matte, non-reflective surface texture on metal?

Accepted Answer

Sand blasting or brushing with a brass wheel

Answer

Rouge polishing

Answer

Burnishing with a smooth steel tool

Answer

Applying a bright-cut engraving

Question 3

In platinum fabrication, why must tools and work surfaces be kept free of gold contamination?

Accepted Answer

Gold can diffuse into platinum at high temperatures, causing yellow discoloration

Answer

Gold raises platinum's melting point significantly

Answer

Gold residue prevents platinum from being polished

Answer

Gold contamination makes platinum brittle at room temperature

Question 4

A bezel-set cabochon stone sits too low after setting. What should the jeweler have done differently during fabrication?

Accepted Answer

Made the bezel seat shallower so the stone sits higher

Answer

Used harder metal for the bezel

Answer

Applied more flux before soldering the bezel

Answer

Chosen a lower dome height for the cabochon

Question 5

What is the purpose of a scribe in bench jewelry work?

Accepted Answer

Scratching layout lines on metal for cutting or forming guides

Answer

Measuring ring sizes accurately

Answer

Cleaning flux residue from solder joints

Answer

Pressing prongs over a stone's girdle

Question 6

Which solder flow property is described as the temperature at which solder becomes fully liquid and flows freely?

Accepted Answer

Liquidus temperature

Answer

Solidus temperature

Answer

Annealing temperature

Answer

Recrystallization temperature

Question 7

When performing a two-piece ring shank sizing job, what must a jeweler verify before soldering the new shank section?

Accepted Answer

Alignment is true so the ring is not twisted after joining

Answer

The ring's appraisal value matches records

Answer

The gemstone's fluorescence grade

Answer

The original solder grade used in prior repairs