Necklace Of Synthetic Material
date: label: Accession Date
content: 1991
name: label: Donor Name
content: No Information
notes: label: Notes
content: NECKLACE OF SOME SYNTHETIC MATERIAL. Possible exhibit prop? In 2004, Walter Hopwood, a chemist at the Smithsonian Center for Materials Research and Education, analyzed this necklace. Here are his findings: There are four parts to the necklace. The core of the beads consists of a carbohydrate gum. Several such gums are items of commerce, for example, arabic and tragacanth. Another part is a layer of carbohydrate gum plus inorganic silicate filler. This might be considered two layers because it is on both sides of the core layer. The silicate filler may be asbestos. A third part is paint on the outside only of the bead. It is paint containing inorganic carbonate, perhaps lead white. Finally, the fibers of the threads on which the beads are strung are cotton.
label: Notes
content: Necklace may be an exhibit prop?
label: Record Last Modified
content: 26 Feb 2019
label: Specimen Count
content: 2
topic: label: Topic
content: Ethnology
setName: label: See more items in
content: Anthropology
dataSource: label: Data Source
content: NMNH - Anthropology Dept.
identifier: label: Accession Number
content: 999999
label: USNM Number
content: ET15582-0
objectType: label: Object Type
content: Necklace