Lonsdaleite is also known as "hexagonal diamond." It has an index of refraction from 2.40 to 2.41, a density from 3.2 to 3.3, and a hardness of 3.00.
... a defense contractor in Rancho Bernardo, San Diego. He worked for them for the past 11 years. He took motorcycle trips with his wife.
He died at age 63 in th ...
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