Workshop - Valuation Certificate

SKU: Workshop - Valuation Certificate

Regular price: $75.00
Sale price: $75.00
Regular price: ~~$150.00~~
Unit price: per

The type, colour, size and soundness of precious opal are factors that determine the price paid for the gemstone. The price is based on the quality of the opal and expressed per carat. Furthermore, there is a marked difference between the value of uncut opal compared with the value of cut and polished opal. Categories such as the variety, background, transparency, spectrum, tone, origin, distribution, inclusions, carat weight etc all add to determining the correct value of the opal itself.

The clarity of the colour is critical when assessing the value of opal. Red fire is the rarest colour, followed by green/orange, green/blue and blue. Therefore red fire opal is generally more valuable than a predominantly green opal, which in turn is more valuable than a stone showing only blue colour.

However, brilliance and clarity of an open proportioned pattern are the main decision makers – a brilliant blue/green can cost more than a dull red; bright twinkling stars of a ‘pin fire’ pattern can cost more than a cloudy open pattern of similar colouration; or a brilliant, lustrous light opal can cost more than a lacklustre black opal.

Australian Opal Cutters Valuation Certificates provide industry leading analysis of the 14 characteristics of your Opal

The 14 characteristics include: Variety, Body Tone, Brightness, Transparency, Colour, Hue, Outline, Profile, Origin, Pattern, Display, Distribution and Inclusions,