THE MOHS SCALE

The Mohs Scale lists ten minerals according to relative

hardness. The scale is graduated from No. 1 (Talc, a very

soft stone) through No. 10 (Diamond, the hardest stone).

1. Talc

2. Gypsum

3. Calcite

4. Fluorite

5. Apatite

6. Orthoclase

7. Quartz

8. Topaz

9. Corundum

10. Diamond

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SCRATCH TEST FOR HARDNESS

Use the simple field test below to identify relative hardness of

a stone. Stones in the range of 6.5 to 7.5 will usually polish

well.

Fingernails scratch 2 to 2.5

Pennies scratch 3.0

Knife blades scratch 5.5

Window glass scratches 5.5

Steel files scratch 6.5

Garnet scratches 7 to 7.5

Carborundum scratches 9.5

 

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                                        BIRTHSTONES

                     Modern                        Talesmanic

 

                 Genuine                  Synthetic           Ancient

 

January          Garnet                      Garnet                Onyx

 

February         Amethyst                    Amethyst              Jasper

 

March            Aquamarine                  Aquamarine            Ruby

                 Bloodstone

 

April            Diamond                     White-Spinel          Topaz

 

May              Emerald                     Tourmaline            Carbuncle

                                                                    Garnet

 

June             Moonstone                   Alexandrite           Emerald

                 Pearl

July             Ruby                        Ruby                  Ruby

 

August           Peridot                     Peridot               Diamond

                 Sardonyx

 

September        Sapphire                    Blue-Sapphire         Jacinth

 

October          Opal                        Rose-Sapphire         Agate

                 Tourmaline                  Sapphire

 

November         Topaz                       Golden-Sapphire       Amethyst

 

December         Tourquoise                  Blue-Zircon           Sapphire

                 Lapis-Lazuli

 

NOTE: ALL ORDERS WILL HAVE SHIPPING ADDED AFTER ORDER IS RECEIVED SO THE CORRECT SHIPPING COST CAN BE ADDED unless it is specified in description of the item that shipping is included.

Please read our polices page.

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