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Tips and Articles
Electrostatic Woes With Digital Scales?? (rev. 8/11/2009) Electrostatic charges can disrupt the accuracy of your digital scale, but the problem can be reduced or eliminated by a simple "treatment" with a household product.
Sunstone Gem Retail Pricing Guide (rev. 8/11/2009) This informal and unofficial summary of faceted
Sunstone
gem prices was subjectively derived from various commercial sources,
and will provide the casual investigator a working basis for
approximating the value of the more commonly found varieties and
colors. The
commonly used "A, AA, AAA, etc." Sunstone grades employed by some are
not used here due to difficulties in establishing clear and
consistent definitions. Please note this guide is primarily
intended for internal "Lincoln Gems and Craft" use. Other price
guides should also be consulted when formal estimates are needed, most
notably those periodically included in the "Lapidary Journal", or in
published "Gem Buyers Guide" books written by gemology
professionals. Feedback on the pricing detail, grading
structure, or retail customer price acceptance would be greatly
appreciated. This
guide and pricing schedule represents a subjective compilation of
various published Juniper Ridge and similar Fire Opal prices and price
schedules. There are
a wide range of published prices, and very subjective color and
quality appraisals and their designations in the various sources.
Due to the difficulty in finding a universally accepted definition,
this
guide does
not yet use the somewhat traditional "Extra Fine, Fine, Good,
and Commercial" opal quality classifications, but none-the-less
contains
pricing
factors
that reflect the intent. This
is a dynamic pricing guide, and as new facts are established updates
will be made. Input or feedback regarding Juniper Ridge Fire and
similar Opal
prices would
be appreciated. Sub-surface damage induced by normal shock and gouging associated with various lapidary lap grits is often a hidden problem not always seen by a cutter. Knowing it exists and taking positive steps to define and deal with it is the path to easier cutting, and flaw free gems. This planning guide is a practical approach utilizing in composite the experiences of Lincoln Gems and Craft, and a number of good verbal and written tips offered by others.
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