Large spectacular seeds are often used for pendants.
Trees of the torchwood family (Burseraceae) produce the aromatic incense resins frankincense, myrrh and copal, used extensively in Old and New World civilizations for thousands of years. The sheer beauty of amber has made it a popular adornment for African women, who wear it in various styles according to their marital status and cultural heritage. To appreciate the monetary value of amber, a piece weighing 18 pounds was valued at 30 million U. dollars prior to World War centuries amber was imported from Europe across the Mediterranean to West Africa and down the Red Sea to Ethiopia. Together with tin, amber has been considered one of the chief items that led the Romans to penetrate the Gallic regions to the west and north of the Mediterranean. Rosin is used in the manufacture of varnishes, printer's ink, paper coatings and sealants. In fact, the industry to produce these ship-related commodities became known as "naval stores." When raw pine pitch is distilled the volatile "spirits of turpentine" are removed, leaving a solid residue known as rosin.
The settlement of North America was partially due to England's desire to rid herself of dependence on Scandinavian sources of resin--since the pitch was used to caulk ships and waterproof rigging.
In fact, some of the world's most beautiful and elegant amber jewelry is worn by women of Ethiopia and pine resin or pitch is a valuable commodity and figures prominently in the history of the United States.
Natural lacquers come from the resinous sap of the Japanese lacquer tree (Toxicodendron vernicifluum), a member of the sumac family (Anacardiaceae) and close relative of our poison ivy.
Rosin is also used on the bows of string instruments to make them slightly sticky, thus creating more friction and enhancing the tone of the music.n addition to the pine family (Pinaceae), many other trees produce thick, resinous sap which is utilized by people.
The slight stickiness helps the pitcher to grip the ball and hopefully improve the accuracy of the pitch.
The rosin bag of baseball players contains powdered rosin that becomes sticky when the pitcher's hand warms it.