Students will see how marketing and name recognition affect value. Gems are also an exciting and intriguing aspect to the study of minerals which can help to spur flagging interest and lead to deeper understanding of mineral and crystal formation. Materials Small plastic zipper bags or paper envelopes, one for each student in the class. Procedure Fill bags ahead of time with 3 or 4 samples for each student. Bags cannot be filled with the identical mix of stones.
Variety is important for activity.
Discuss minerals in general. Discuss gems - i.e. natural minerals that have been cut, shaped and polished for human adornment or use. Show bags to the students. Tell them that the stones are all genuine gemstones. Give them the conditions of the trading activity.