Amber - Pendant
Are you interested in this item?This item is up for auction at Catawiki. Please click on "respond to advert" (orange button) to get redirected to the Catawiki website. Catawikiâs goal is to make special objects universally available. Our weekly auctions feature thousands of unusual, rare, and exceptional objects you wonât find in just any store. Blue /yellow AMBER PENDANTAmber tested in salt water and UV lamp. If you are interested in amber then surely you are a collector or a connoisseur of this unique stone. This jewellery pendant created from amber.Natural amber, no colour change, no pressure, no synthesis, no glue, or other substances. Blue Amber pendant. Amber tested in salt water and under UV light. Pendant size: mm(1 inch = 25.5 mm) Weight: 29 gr NO CRACKS 'If you are buying amber for the first time' Note that the amber is yellow. blue colours visible in sunlight or under a UV torch on a black cloth. Some photos are made with halogen light (to see the colour clearly) others photos are sunlight. The colours in the photographs may have more intensity; cameras bring colours to life, and pc monitors can also be configured to make colours more intense. The blue sky colour observed in some amber from the Dominican Republic is actually fluorescence stimulated by ultraviolet (UV) light. A previous study described the colour as iridescence over a yellow background, but it is in fact surface fluorescence. Since this amber can be considered a long-wavelength filter with a half-pass of wavelengths at about 530 nm in its spectral transmittance, it does not transmit either UV or short-wave visible light. As this material completely absorbs light in the UV range and strongly absorbs light in the short-wave visible range, the stimulated blue colour is confined exclusively to the surface. The amber from this study also showed the Usambara effect, the phenomenon in which colour varies with the path length of light through a sample. The phenomenon by which body colour varies according to a gemstoneâs thickness is called the Usambara effect. Liu et al. (a) determined that this colour variation is caused by the hue angle change corresponding with the path length of light through a gem material. Amber is fossilized tree resin used for jewellery, decoration, medicine, and perfume. Specimens with inclusions of insects and plants are of great scientific significance and are highly esteemed by collectors. Amber is usually yellow to brown, and some specimens display red to brownish red or reddish brown colours. Blue amber is rare, found mainly in the Dominican Republic with some production from. This variety comes from the resin of an extinct tree species Hymenaea protera from 15 to 20 million years ago. (GEM ENCYCLOPEDIA) Read more