More than 20 years back, three young men sat together in Hong Kong, got talking about gems and jewelry. The realized that they shared the excitement, vision and passion for the industry, and STS was born.
Early in history, STS had a very strong presence worldwide in the color gemstones industry, which helped it start from a position of strength in the ...
Chemical Composition Almost pure carbon, crystallized under extremes of heat and pressure. Color Colorless to ...
read moreChemical Composition Aluminum silicate with fluorine and hydroxyl. Color Colorless, yellow, brown, red, blue, and ...
read moreChemical Composition Beryllium Aluminate Color Golden brown Refractive Index R.I 1.74-1.77, biaxial positive or ...
read moreChemical Composition Complex silicates with widely varying chemical composition but similar structures. Color ...
read more



sending
enquiry |