Recent advances in polishing the bare CERAFORM SiC surface to finishes as smooth as 10 Angstrom rms has enhanced the viability of SIC as a mirror material those applications requiring thermal stability over a broad temperature range. In addition PVD silicon claddings have been developed to provide a low cost polishing option for more environments which are less severe. With the ability to make complex shapes in sizes up to 1 meter, CERAFORM SiC provides a cost-effective alternative to beryllium and glass.