skillfactor-pipeline/skills/jeweller/references/tasks.md

Tasks & work activities — jeweller

Source: O*NET 30.3, occupation 51-9071.06 (Gem and Diamond Workers).

Task statements

• [Core] Examine gems during processing to ensure accuracy of angles and positions of cuts or bores, using magnifying glasses, loupes, or shadowgraphs.
• [Core] Assign polish, symmetry, and clarity grades to stones, according to established grading systems.
• [Core] Estimate wholesale and retail value of gems, following pricing guides, market fluctuations, and other relevant economic factors.
• [Core] Examine gem surfaces and internal structures, using polariscopes, refractometers, microscopes, and other optical instruments, to differentiate between stones, to identify rare specimens, or to detect flaws, defects, or peculiarities affecting gem values.
• [Core] Identify and document stones' clarity characteristics, using plot diagrams.
• [Core] Advise customers and others on the best use of gems to create attractive jewelry items.
• [Supplemental] Examine diamonds or gems to ascertain the shape, cut, and width of cut stones, or to select the cuts that will result in the biggest, best quality stones.
• [Supplemental] Immerse stones in prescribed chemical solutions to determine specific gravities and key properties of gemstones or substitutes.
• [Supplemental] Hold stones, gems, dies, or styluses against rotating plates, wheels, saws, or slitters to cut, shape, slit, grind, or polish them.
• [Supplemental] Sort rough diamonds into categories based on shape, size, color, and quality.
• [Supplemental] Secure gems or diamonds in holders, chucks, dops, lapidary sticks, or blocks for cutting, polishing, grinding, drilling, or shaping.
• [Supplemental] Measure sizes of stones' bore holes and cuts to ensure adherence to specifications, using precision measuring instruments.
• [Supplemental] Select shaping wheels for tasks, and mix and apply abrasives, bort, or polishing compounds.
• [Supplemental] Dismantle lapping, boring, cutting, polishing, and shaping equipment and machinery to clean and lubricate it.

Detailed work activities

• Advise others on ways to improve processes or products.
• Apply solutions to production equipment.
• Determine the value of goods or services.
• Disassemble equipment for maintenance or repair.
• Evaluate quality of materials or products.
• Examine physical characteristics of gemstones or precious metals.
• Maneuver workpieces in equipment during production.
• Measure dimensions of completed products or workpieces to verify conformance to specifications.
• Mix substances to create chemical solutions.
• Mount materials or workpieces onto production equipment.
• Operate grinding equipment.
• Record operational or production data.
• Select production equipment according to product specifications.
• Sort materials or products for processing, storing, shipping, or grading.