By Erika Winters
Leibish & Co. has announced the debut of six new diamonds the company won at Argyle's 2013 Premium Tender, including one of the rarest types of fancy-colored diamonds in the world, a 0.21-carat fancy red diamond. The company, which is known for both its extensive tutorials and its rainbow of natural fancy-colored diamonds, has done much to educate the public about these rare gems.
