rocks that can
be cut, shaped, and polished into beautiful stones that can be
used in jewelry and for collecting. A stone is worth more
money if it is perfect.
There are minerals that are pretty, rare, and large but are not thought of as gemstones because they are easy to break or scratch. Most gemstones are hard. If you check the Mohs' Hardness Scale, you will see that the gems are from 6 - 10 which are the hardest minerals.
Some gemstones are birthstones. Each month of the year has a gemstone. Even though it started out as a gift to the person who has the birthday, it is also supposed to bring good luck if you wear your own birthstone. We did a survey of all of the fourth and sixth graders at our school. A really high percentage of kids don't have a clue what their birthstone is. Do you?