What does the Sieve Set describe?

What does the Sieve Set describe?

• A. A protective glove for handling stones.
• B. A method for analyzing facet angles.
• C. A scale that weighs gems by carat.
• D. Set of circular plates, each punched with precisely sized holes, used for sorting small, round gems by size.

Answer: (D)

Sorting by size is what the Sieve Set is for. It’s a collection of circular plates, each with holes cut to a precise size. By stacking them and agitating a batch of small, round gems, stones larger than a hole stay on the current plate while smaller ones pass through to the next, creating size fractions. This helps you grade or combine stones by diameter and ensure uniformity in parcels. The other options describe tools or methods used for different purposes: a glove is for protection, facet-angle analysis is about cut geometry, and a scale weighs gems by carat, which is a measure of weight, not size.

Sorting by size is what the Sieve Set is for. It’s a collection of circular plates, each with holes cut to a precise size. By stacking them and agitating a batch of small, round gems, stones larger than a hole stay on the current plate while smaller ones pass through to the next, creating size fractions. This helps you grade or combine stones by diameter and ensure uniformity in parcels. The other options describe tools or methods used for different purposes: a glove is for protection, facet-angle analysis is about cut geometry, and a scale weighs gems by carat, which is a measure of weight, not size.