Partial Listing of Gemstones of North America

Diamond - Hardness 10.  Birthstone for April.  Deposits in Arkansas & Canada.

Sapphire - Hardness 9.   Birthstone for September.  Deposits in Montana & North Carolina.

Ruby - Hardness 9.  Birthstone for July.  Deposits  in North Carolina.

Topaz - Hardness 8.  Birthstone for November.  Deposits  in Texas & Colorado.

Opal - Hardness 5 1/2 - 6 1/2.  Birthstone for October.  Deposits in Oregon.

Tourmaline - Hardness 7 - 7 1/2.  Also a Birthstone for October.  Deposits in Maine & California.

Turquoise - Hardness 5 - 6.  Birthstone for December.  Deposits in Arizona & Nevada.

Jade -  Hardness 6.   Deposits in Vermont & California.
                      
Rhodonite - Hardness 5 1/2 - 6 1/2.   Deposits in California & Canada.

Apatite - Hardness 5.  Deposits in North Carolina.

Iolite - Hardness 7 - 7 1/2.   Deposits in Wyoming.

Obsidian - Hardness 5 - 5 1/2.  Deposits in Utah.

Malachite - Hardness 3 1/2 - 4.  Deposits in Arizona.

Azurite - Hardness 3.5.  Deposits  in Arizona.

Lapis Lazuli - Hardness 5 - 6.  Deposits  in Colorado.

Serpentine - Hardness 3 - 4 1/2.  Deposits  in Vermont & A widely spread occurrance. 

Howlite - Hardness 3 1/2.  Deposits  in California.

Amethyst - Hardness 7.   Birthstone for February.  Deposits in Arizona & Maine.

Agate - Hardness 6 1/2 - 7.  Deposits are a widely spread occurrence.

Moss Agate - Hardness 7.  Deposits are a widely spread occurrence.

Petrified Wood -  Hardness 5 - 7.  Deposits  in Arizona.

Citrine - Hardness 7.  Also a Birthstone for November.  Deposits in Arizona & Maine.

Rose Quartz - Hardness 7.  Deposits in Maine & South Dakota.

Aquamarine - Hardness 7 1/2.  Birthstone for March.  Deposits in New Hampshire.
 
Amazonite -  Hardness 5 - 6.  Deposits in Colorado.

Moonstone - Hardness 6 - 6 1/2.  Birthstone for June.  Deposits in Pennsylvania & Virginia.

Smokey Quartz - Hardness 7.  Deposits in Colorado & Maine.

Sunstone -  Hardness 6  - 6 1/2.   Deposits in Oregon.

Peridot - Hardness 6 1/2 - 7.  Birthstone for August.  Deposits in Arizona.

Pyrope Garnet - Hardness 7 - 7 1/2.  Birthstone for January.   Deposits are a widely spread occurrence.

Chalcedony -  Hardness 7.  Deposits in Texas & Nevada.

Cats Eye -   Hardness 8 1/2.  Deposits in Connecticut & Maine.

Carnelian -  Hardness 6 1/2.  Deposits in New Mexico, Utah & Oregon.

Rhodochrosite - Hardness 4.  Deposits in Colorado.

Morganite - Hardness 7 1/2 - 8.  Deposits in Maine & California.

Jasper -   Hardness 6 1/2 - 7.  Deposits in Vermont & also a widely spread occurrence. 

Spessartite - Hardness 6 1/2 - 7 1/2.  Also a Birthstone for January.  Deposits are a widely spread occurrence.

Fresh Water Cultured Pearls -  Hardness 3 - 4.  Also a Birthstone for June.  Fresh Water Cultured Pearls can be found in any River in the USA - Primarily in the Mississippi River.

PetrifiedCoral -  Hardness 3 - 4.  Deposits in Florida & Minnesota.

Amber -  Hardness 2 - 3.  Deposits in New Jersey.

Fossil Ivory Walrus -   Hardness 2 1/2 - 2 3/4.  Deposits in Alaska.