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Bead Classifier

Stone Beads

Author: Neil Peterson
This article is hosted at:http://www.treheima.ca/viking/bead_summary.htm

Information is taken from Callmer's Trade Beads book:

TRADE BEADS AND BEAD TRADE IN SCANDINAVIA ca. 800-1000 A.D.,  JOHAN CALLMER,  ACTA ARCHAEOLOGICA LUNDENSIA SERIES IN 4o. Nr 11, © 1977, ISBN 91-40-04466-1



Number of Finds: 299
Number of Beads: 14945

Largest Find: 1216 Beads
Finds smaller than 10 beads were excluded
Amber beads were ignored

He attempted to classify the beads according to a number of criteria.  Many beads were not classifiable or did not have enough beads to warrant a class.

Amethyst

    Type: U001. 3 beads from 2 finds.

Jade

    Type: V001. 1 bead from 1 find.

Carnelian & Agate

Type # Finds # Beads Shape Prop. Size Shape Prop. Size
T001 33 169 121 152-3 162-5 spheric medium short -length/diameter =<1/1 but > 1/2, medium long length/diameter =>1/1 but < 1.5 3-5 mm -> 12-14 mm
T002 2 3 132 151 164 truncated bicone, the bases of the cones are identical with the equator short length/diametre =< 1/2 9-11 mm
T003 2 3 124 154 162-3 rounded with plane parallel ends long - length / diametre > 1.5 3-5 mm, 6-8 mm
T004 2 2 141 154 162-3 hexagonal oval long - length / diametre > 1.5 3-5 mm, 6-8 mm
T005 16 33 148 152-3 164-6 planum parallel rounded discoid with facetted edges. medium short -length/diameter =<1/1 but > 1/2, medium long length/diameter =>1/1 but < 1.5 9-11 mm -> 15-17 mm
T006 2 4 145 153 166-7 planum parallel rhomboid discoid with facetted edges medium long length/diameter =>1/1 but < 1.5 15-17 mm, 18-20 mm
T007 52 256 135 153 163-4 rectangular prismatic with cut corners medium long length/diameter =>1/1 but < 1.5 6-8 mm, 9-11 mm
T008 0 0 123 152 166-8 rounded and ribbed without plane parallel ends medium short -length/diameter =<1/1 but > 1/2 15-17 mm -> 21-23 mm
T009 48 190 137,139 153-4 163-5 hexagonal rectangular prismatic, octagonal rectangular prismatic medium long length/diameter =>1/1 but < 1.5, long - length / diametre > 1.5 6-8 mm -> 12-14 mm
T010 37 70 147 151-2 163-4 globular, hexagonal-octagonal with quadrangular to hexagonal facets short length/diametre =< 1/2, medium short -length/diameter =<1/1 but > 1/2 6-8 mm, 9-11 mm
T011 1 1 140 153-4 163-4 asymmetrical octagonal bipyramidal medium long length/diameter =>1/1 but < 1.5, long - length / diametre > 1.5 6-8 mm, 9-11 mm
T012 0 0 146 153-4 163 octagonal truncated cone medium long length/diameter =>1/1 but < 1.5, long - length / diametre > 1.5 6-8 mm
T013 0 0 144 154 164 symmetrical octagonal bipyramidal long - length / diametre > 1.5 9-11 mm
T014 7 100 127 153-4 162-4 cylindrical medium long length/diameter =>1/1 but < 1.5, long - length / diametre > 1.5 3-5 mm -> 9-11 mm

     Classified beads of type T: 831 beads in 104 finds.
     Unclassified beads of type T: 48 beads in 6 finds.
     Total beads of type T: 879 beads in 107 finds.
     Average # type T per find: 8.215
     Number of finds with only Type T: 0
     Average # glass beads with a T bead: 27.43



Rock Crystal

Type # Finds # Beads Shape Prop. Size Shape Prop. Size
S001 57 214 121 152-3 163-5 spheric medium short -length/diameter =<1/1 but > 1/2, medium long length/diameter =>1/1 but < 1.5 6-8 mm -> 12-14 mm
S002 5 5 121 152-3 168-9 spheric medium short -length/diameter =<1/1 but > 1/2, medium long length/diameter =>1/1 but < 1.5 21-23 mm, 24-26 mm
S003 7 8 124 153 163 rounded with plane parallel ends medium long length/diameter =>1/1 but < 1.5 6-8 mm
S004 4 9 124 153 165-6 rounded with plane parallel ends medium long length/diameter =>1/1 but < 1.5 12-14 mm, 15-17 mm
S005 2 8 124 154 162-3 rounded with plane parallel ends long - length / diametre > 1.5 3-5 mm, 6-8 mm
S006 9 28 141 154 162-3 hexagonal oval long - length / diametre > 1.5 3-5 mm, 6-8 mm
S007 1 1 132 153-4 163 truncated bicone, the bases of the cones are identical with the equator medium long length/diameter =>1/1 but < 1.5, long - length / diametre > 1.5 6-8 mm
S008 2 11 148 152-3 164-5 planum parallel rounded discoid with facetted edges. medium short -length/diameter =<1/1 but > 1/2, medium long length/diameter =>1/1 but < 1.5 9-11 mm, 12-14 mm
S009 34 186 135 152-3 162-4 rectangular prismatic with cut corners medium short -length/diameter =<1/1 but > 1/2, medium long length/diameter =>1/1 but < 1.5 3-5 mm -> 9-11 mm
S010 5 6 123 152 166-7 rounded and ribbed without plane parallel ends medium short -length/diameter =<1/1 but > 1/2 15-17 mm, 18-20 mm
S011 35 84 137,139 153-4 163-5 hexagonal rectangular prismatic, octagonal rectangular prismatic medium long length/diameter =>1/1 but < 1.5, long - length / diametre > 1.5 6-8 mm -> 12-14 mm
S012 30 61 147 151-2 164 globular, hexagonal-octagonal with quadrangular to hexagonal facets short length/diametre =< 1/2, medium short -length/diameter =<1/1 but > 1/2 9-11 mm
S013 4 5 140 153-4 163-4 asymmetrical octagonal bipyramidal medium long length/diameter =>1/1 but < 1.5, long - length / diametre > 1.5 6-8 mm, 9-11 mm
S014 2 2 144 154 164 symmetrical octagonal bipyramidal long - length / diametre > 1.5 9-11 mm
S015 3 16 142 154 165 octagonal rectangular prismatic with facetted sloping ends long - length / diametre > 1.5 12-14 mm
S016 0 0 134 151 162-3 rectangular prismatic short length/diametre =< 1/2 3-5 mm, 6-8 mm
S017 0 0 130 154 163 cylindroid with oval section long - length / diametre > 1.5 6-8 mm

     Classified beads of type S: 644 beads in 110 finds.
     Unclassified beads of type S: 45 beads in 11 finds.
     Total beads of type S: 689 beads in 114 finds.
     Average # type S per find: 6.044
     Number of finds with only Type S: 0
     Average # glass beads with a S bead: 37.105



Number of Finds with only Types S,T,U,V Combined: 5
Number of Finds with both S&T: 85
Number of Finds with S&T&U: 1
Number of Finds with S&T&U&V: 0
      Updated: August 23 2017 23:04:05.
Text © Neil Peterson, 2017
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