FIELD: personal use articles.
SUBSTANCE: invention relates to decorative art and method for production of manmade material, which imitates coral. Method provides for cleaning of blast-furnace slag pieces from contamination, their soaking in 3-4% solution of cobalt salt nitrate for 6-24 hr, drying down to moisture of 1-8%, thermal treatment at the temperature of 10-100°C below temperature of slag melt start for 5-25 min, cooling.
EFFECT: invention provides for production of decorative material, which imitates blue coral.
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