... to -0.040; typically about .020 but in dark stones it may reach .040Pleochroismtypically moderate to strongRed Tourmaline: Definite; ... brownBlue Tourmaline: Strong; dark blue, light blueDispersion.017Ultravioletpink stones—inert to very weakFluorescencered to violet in long and short ... almost complete absorption of red down to 640nm in blue and green stones; red and pink stones show lines at 458 and ...
... compounds for preparation of hides prior to tanning; 3)Artificial precious stones; 4)As flux in metallurgical industry, fire-proofing compositions and ...
... dressing compounds for preparation of hides prior to tanning; Artificial precious stones; As flux in metallurgical industry, fire-proofing compositions and linings ...
... dressing compounds for preparation of hides prior to tanning; Artificial precious stones; As flux in metallurgical industry, fire-proofing compositions and linings ...
... dressing compounds for preparation of hides prior to tanning; Artificial precious stones; As flux in metallurgical industry, fire-proofing compositions and linings ...
... , abrasive resistant, high pressure and anti-oxidation For the alloy, precious stones and other hard materials, grinding, drilling and polishing,manufacturing, and ...
... products; Surface grinding for stainless steel and other metals, plastics, precious stones, quartz and so on; Mirror surface grinding for silicon, germanium ...
... taste of natural, ecological stones, is highly similar to the natural stones, but choooses the most beautiful side of precious stones, make the decoration ...
... the identification and imitation diamond designed a kind of instrument, precious stones in the highest thermal conductivity for diamond, diamond at room ...
... , PaypalProcessing: mirror polished, either Cubic Zirconia or Swarvoski Crystal Stones various precious stones seting, and hard gold ,Rhodium,Sterling Silver plated Our factory ...
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