The ideal gift! Buy the best silver / blanco tequila online. Price and reviews available for Cantera Negra Silver Tequila Blanco – 750ml Bottle. Our Silver tequila is a pure and refined form of our Elixir de Agave spirit. It is produced from our finest batches, and is crystal clear and light tasting, with natural hints of citrus and clean, earthy notes on the finish. Cantera Negra Silver is unparalleled as a base tequila for any drink recipe. It won the Silver medal at the 2017 San Francisco World Spirits Competition.