Patinas for Metal Artists
Barometric Pressure and Humidity
Photo Processes and Formulas
Science Experiments
Laboratory Procedures
Biodiesel Processing
These quartz crystal points have varying levels of clarity. Each also varies in size within its hexagonal configuration. Specimen is at least two inches long. Each piece is shipped with an informative story-card.
Test Tube Clamp / Holder Cat. No. - NC-0231 $1.99
Spoon / Scraper, Stainless Steel Cat. No. - NC-10819 $2.40
Amethyst Crystal Rock Cat. No. - NC-3025 $1.59
Brew Your Own Root Beer Kit Cat. No. - NC-4214 $13.95