Travertine is a natural stone very similar to marble. Its earthy tones accentuate Barclays Loomis Above Counter Basin. Loomis Is an oval shaped bowl hand carved from natural travertine and polished to an impressive shine. Hand carved natural travertine construction Polished interior and exterior Bdimensions are 19-1/2" x 13" Binterior is 17-1/2 x 11-1/4" Above counter height 6" No overflow We recommend treatment with stone sealant before use Variations in the size, shape and color make each sink truly unique.