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Evidence Guide: CUVOPA202A - Handle and store rough and cut opal

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

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!

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CUVOPA202A - Handle and store rough and cut opal

What evidence can you provide to prove your understanding of each of the following citeria?

Work with opal

  1. Document source, origin and types of rough opal
  2. Identify appropriate storage conditions and locations for various types and classes of opal
  3. Identifyways in which damage might occur to rough and cut opal and take preventative measures
  4. Grade opals if required
  5. Weigh and bag opals and store appropriately
Document source, origin and types of rough opal

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify appropriate storage conditions and locations for various types and classes of opal

Completed
Date:

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Identifyways in which damage might occur to rough and cut opal and take preventative measures

Completed
Date:

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Grade opals if required

Completed
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Weigh and bag opals and store appropriately

Completed
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Use processes that minimise loss and theft

  1. Identify areas of risk and evaluate process employed for handling and processing gems
  2. Determine strategies for minimising risk and safeguarding opals
  3. Implement risk minimisation strategy
  4. Document all facts about the opals and all procedures thoroughly
Identify areas of risk and evaluate process employed for handling and processing gems

Completed
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Determine strategies for minimising risk and safeguarding opals

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Implement risk minimisation strategy

Completed
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Document all facts about the opals and all procedures thoroughly

Completed
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Control stock

  1. Identify an appropriate stock control system
  2. Follow stock control procedures to monitor and manage stock
  3. Maintain records of stock
Identify an appropriate stock control system

Completed
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Follow stock control procedures to monitor and manage stock

Completed
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Maintain records of stock

Completed
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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Evidence of the ability to:

identify, explain and apply safe and appropriate procedures for the handling and storage of rough or cut and polished opal

evaluate the areas where there is risk of loss and theft and follow risk minimising procedures.

Context of and specific resources for assessment

Assessment must ensure access to:

various samples of rough and cut opal

bags

recording materials

scales

storage locations.

Method of assessment

A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate for this unit:

observation of processes and procedures

oral and/or written questioning of underpinning knowledge and skills

evaluation of the final product

review of portfolios of evidence

review of third-party workplace reports of on-the-job performance by candidate.

Assessment methods should closely reflect workplace demands (e.g. literacy) and the needs of particular groups (e.g. people with disabilities, and people who may have literacy or numeracy difficulties, such as speakers of languages other than English, remote communities and those with interrupted schooling).

Guidance information for assessment

Holistic assessment with other units relevant to the industry sector workplace and job role is recommended.

Required Skills and Knowledge

Required skills

communication skills to document key information

critical thinking and analytical skills to assess areas of risk

literacy skills to document operational information

planning and organising skills to organise storage and stock control

problem-solving skills to monitor situations and adjust actions accordingly

numeracy skills to use stock control systems and make basic calculations

technical skills to use appropriate handling and storage.

Required knowledge

origin of the types and forms of opal

types of cutting styles

procedures for handling and storing opal

areas of risk of theft.

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Types of rough opal may include:

composite natural opal – doublets, triplets, mosaic and chip opals

natural opal type 1 – opal in one piece in its natural state apart from cutting and polishing

natural opal type 2 – opal naturally attached to the host rock – boulder opal

natural opal type 3 – opal intimately diffused as infilling in pores or between the grains of the host rock; matrix opal

varieties of opal:
(N1 to N9 represents gradation form black to white in approximately 10% intervals)

black – opal which shows a play of colour within or on a black or very dark body tone (N1, N2, N3, N4)

dark – opal which shows a play of colour within or on a dark body tone (N5, N6)

light – opal which shows a play of colour within or on a light body tone (N7, N8, N9).

Appropriate storage conditions and locations may include:

depending on the value: in safe or in designated locked cupboard

display boxes and pockets

display cases

individually bagged

humidified atmosphere

safes and deposit boxes.

Ways in which damage might occur may include:

dehydration

exposure to halogen lights

extremes of temperature

general wear and tear

immersion in water

rough handling

surface damage and scratching.

Preventative measures may include:

humidifying atmosphere

keeping in bags.

Areas of risk may include:

lack of documentation

misplacement

theft.

Strategies for minimising risk and safeguarding opal may include:

alarm systems

banks (deposit boxes)

display cases

insurance

lighting

photographing

safes

scanning

security locks

systematic approach to storage and handling

thorough recording and documenting

use of standard procedures for handling, storage and documentation.

Stock control system may be:

manual or electronic

very simple in the case of small businesses.

Stock may be:

cutting and polishing consumables

equipment for production cutting

rough or cut opal.