In Cold Blood was first published as a four-part serial in The New Yorker , beginning with the September 25, 1965 issue. The piece was an immediate sensation, particularly in Kansas, where the usual number of New Yorker copies sold out immediately. In Cold Blood was first published in book form by Random House in January 1966.  The book, however, was copyrighted in 1965, and this date appears on the title page of most printings of the book and even in some library indices as the original publication date. The Library of Congress lists 1966 as the publication date and 1965 as the copyright date. 
Most diamonds used as gemstones are basically transparent with little tint, or white diamonds . The most common impurity, nitrogen , replaces a small proportion of carbon atoms in a diamond's structure and causes a yellowish to brownish tint.  This effect is present in almost all white diamonds; in only the rarest diamonds is the coloration from this effect undetectable. The GIA has developed a rating system for color in white diamonds, from D to Z (with D being "colorless" and Z having a bright yellow coloration), which has been widely adopted in the industry and is universally recognized, superseding several older systems. The GIA system uses a benchmark set of natural diamonds of known color grade, along with standardized and carefully controlled lighting conditions. Diamonds with higher color grades are rarer, in higher demand, and therefore more expensive, than lower color grades. Oddly enough, diamonds graded Z are also rare, and the bright yellow color is also highly valued. Diamonds graded D–F are considered "colorless", G–J are considered "near-colorless", K–M are "slightly colored". N–Y usually appear light yellow or brown.