DIY Temperature Control using a PID control and a solid state relay. Category. License.
The difference between regular shungite and elite or noble shungite is in the proportion of organic carbon in it. Regular shungite contains from 35 to 60 per cent of organic carbon while the percentage of carbon in elite shungite is much higher and totals from 92 to 98 per cent.
Only jadeite jade and nephrite jade are considered authentic jade. Jade is either nephrite or jadeite. Jadeite has is slightly harder, takes a higher gloss polish (glassy) and can be gray (most common and least valuable), green, orange, lavender, yellow or white.