Rubicon Technology, Inc. (NASDAQ: RBCN), a leading provider of sapphire substrates and products to the LED, semiconductor and optical markets, today announced the sale of US$ 28.2 million of its common stock pursuant to an underwriting agreement with Canaccord Genuity Inc. The last reported sale price of Rubicon’s common stock as reported by the NASDAQ Global Market on January 7, 2014 was US$ 11.44 per share.