Lonsdaleite static press or using explosives. It has also been produced by chemical vapor deposition, and also by the thermal decomposition of a polymer, poly(hydridocarbyne), at atmospheric pressure, under argon atmosphere, at . It is translucent, brownish-yellow, and has an index of refraction of 2.40 to 2.41 and a specific gravity of 3.2 to 3.3. Its hardness is theoretically superior to that of cubic diamond (up to 58% more), according to computational simulations, but natural specimens exhibited somewhat lower hardness through a large range of values (from 7 to 8 on Mohs hardness scale). The cause is speculated as being due
Topaz (novel) Topaz (novel) Topaz is a Cold War suspense novel by Leon Uris, published in 1967 by McGraw-Hill. The novel spent one week atop "The New York Times" Best Seller List (on the list dated October 15, 1967), and was Uris's first New York Times number-one bestseller since "Exodus" in 1959. During its 52-week run on the list, "Topaz" set two records in two weeks; those for largest positional jump to number-one (9-1) and largest positional fall from number-one (1-5). On the eve of the Cuban Missile Crisis, American and French intelligence agents are plunged into a maze of Cold War