The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!
From the Wiki University
What evidence can you provide to prove your understanding of each of the following citeria?
Develop knowledge of opal geology.
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Identify the geological conditions suitable for the formationof opal and explain the theories of opal formation. Completed |
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Determine sources of opal worldwide and locations of opal fields in Australia. Completed |
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Apply the principles of grading and quality assessment to opal.
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Identify the principles used for valuing opals in terms of: Completed |
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base and background colours |
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Completed |
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the predominant colours and patterns |
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Completed |
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other factors that influence an opal's value.
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Apply principles of valuing to determine the potential value of opals. Completed |
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Distinguish natural opal from man-made varieties.
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Determine thegemmological characteristics of opal based on knowledge of varieties of opal found worldwide. Completed |
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Select gemmological instruments to authenticate natural opal. Completed |
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Use the selected instruments to authenticate opal. Completed |
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Identify substances used to simulate opal and synthetic opal-like substances and compare their characteristics to natural opal. Completed |
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Identify and describe the different types of opal using correct opal nomenclature and terminology.
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Identify opals of various types and describe them using correct terminology. Completed |
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Develop a general awareness of types of opal treatments and determine which are acceptable in the industry. Completed |
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