Abstract: A method for processing a fish of red flesh includes a packing step of cutting a fish in such a shape as would fit immediate use by consumers, piling the cut fish orderly on a tray and stowing the cut fish on the tray into a pack, a vacuumizing step of filling the pack during the packing step with a vacuum atmosphere, a gas-filling step of filling the pack immediately after completion of the vacuumizing step with a mixed gas of carbonic acid gas and oxygen gas without exposing the interior of the pack to the ambient air, thereby exposing the fish to the mixed gas, a pack-sealing step of tightly closing the pack filled with the carabonic acid and the oxygen gas, and a freezing step of quickly freezing the fish contained in the pack and transforming the fish into a frozen fish.

Abstract: A diamond with molybdenum bonded or linked thereto comprises a diamond structure subjected to a pre-sputtering process by causing gaseous ions to impinge on a selected portion of its surface, and molybdenum bonded to said diamond structure, which has been subjected to said pre-sputtering process, by a sputtering process, forming a molybdenum film of 10 to 50 A in thickness bonded or linked with the diamond and which cannot be dissolved with hydrogen peroxide. The diamond may be in the shape of a record stylus which has been soldered to a stylus holder by coating the molybdenum film with copper, or other metal suitable for cementing by solder.

Abstract: A diamond with an inscription comprises a diamond gem structure having an outer surface cut and polished into a specific shape and a microscopic inscription formed at a specific position on the outer surface of the diamond gem structure. The inscription has a pattern indicating the results of expert appraisal of the diamond gem structure. The inscription may be formed by a method including cleaning a selected portion of the stone surface, depositing a layer of metal thereon, coating the metal with a photoresist film, producing thereon a photo impression by using a mask, developing the impression, etching away the uncoated metal portions and then removing the photoresist.