The 4" Crystal Diamond on Base is clear and is made of optic crystal. The Crystal Diamond on Base measures 4" Diameter , weighs 4.2 pounds and is presented in a custom blue gift box with blue satin lining. The CDM04BS is available in 2 sizes including item numbers CDM03BS and CDM04BS. Price includes deep etch in 2 locations. The imprint areas are top 2 1/2" diameter and base 2"W x 2 3/4"H.