Below are some useful charts for jewelry makers or for jewelry shoppers. Scroll down for charts of the Moh’s scale, a bead chart, a necklace length chart and a birthstone chart.
MOH’S SCALE OF HARDNESS
Moh’s scale shows the relative hardness of various gems and minerals. Each stone will scratch the stones below it, but not the stones above it on the scale. All gems have a Moh’s number. If a stone is listed as 6.5 for example, its hardness will be about halfway between that of feldspar and quartz. The Moh’s scale is useful for judging the durability of a stone for jewelry use and is also a useful tool in identifying an unknown specimen.
Another of the useful charts for jewelry makers. it is used to determine how many beads you’ll need for a particular jewelry project.
|Bead Size||Beads per Inch||Beads per 16”|
Standard Necklace lengths These are the terms commonly used for various lengths of necklaces
There are several versions of the list of birthstones assigned to each month, but these are the two most common:
|October||Rose Zircon||Tourmaline or Opal|
|December||Blue Zircon||Turquoise or Lapis|