[Jewelry making - Article 00153] - Re: [Orchid] Opal Setting?

[Don Rogers]

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>      I just have to ask.  Why do you characterize opal as fragile? 

    I am curious as to how you would describe a stone that is 

	1. Not very hard, 5 to  6/12
	2. Not tolerant to heat or cold
	3. Not tolerant to low humidity
	4. Not tolerant to vibrations (IE ultrasonic cleaning)
	5. Not tolerant to oil, soap or most chemicals
	6. Porous, and prone to staining
	7. Not very tough, will knap off sections with little pressure.

    I am not sure, but I would think that fragile is one adjective that
    fits well. 

    Opal is a stone that demands to be treated well. When treated well
    they will reward the owner with a dazzling display of color and years
    of enjoyment. When treated not so well, they can be a major heart
    break.  Some demand more gentle treatment than others. Some are, well
    just too Fragile to be used in jewelry. 

Don Rogers

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