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The stones on this page are available in many but not all shapes or all sizes all of the time.  They are shown here to help smooth your decision process.   We may or may not have the stone you want in the shape shown below.  We typically obtain a stone that most closely meets a customers needs in terms of size, shape, cut, color and quality. Then we customize the mounting (setting) to the needs of the individual ring.  There is some variation in price, but we try to keep the prices VERY reasonable.

Measuring the "hardness" of a Gemstone or Mineral

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Measuring Hardness of Gemstones & Minerals

The hardness of a mineral is one of the most diagnostic and easy tests to perform
in the attempt to indentify an unknown mineral. Hardness is a measure of a mineral's
resistance to abrasion (scratching) and is a reflection of the atomic structure of a mineral.

Mohs Hardness Scale

Hardness is measured on the Mohs Scale, identified numerically
by the standard of these minerals, from 1 (softest) to 10 (hardest):

                1- Talc 
                2- Gypsum
                3- Clacite
                4- Fluorite
                5- Apatite
                6- Orthoclase
                7- Quartz
                8- Topaz  
                9- Corundum
              10- Diamond
            A mineral of a given hardenss will scratch a mineral of a lower number.
            With a systematic approach, you can use minerals of known hardness
            to             determine the relative hardness of any other mineral.

           

ALPHABETICAL MOHS TABLE OF HARDNESS

Alabaster

 2 Garnet 7-7.5 Rhodochrosite 1.5-4.5

Alexandrite

 8.5        

Amber

 2-2.5 Glass 5-6 Rhodonite 5.5-6.5

Amethyst

 7.0     Ruby 9

Ametrine

 7.0        

Andalusite

 7-7.5 Hematite 5.5-6.5 Rutilite 6-6.5

Apatite

 5     Sapphire 9

Aquamarine

 7.5-8 Iolite 7-7.5 Serpentine 2-4

Azurite

 3.5-4 Jadeite 6.5-7 Soapstone 1-1.5

Brazilianite

 5.5 Jet 2.5-4 Sodalite 5-6

Calcite

 3 Lazulite 5-6 Sphene 5-5.5

Chalcedony

 6.5-7 Labradorite 6 Spinel 8

Citrine

 7     Tanzanite 6-7

Chrysoberyl

 8.5 Lapis-Lazuli 5-6 Topaz 8

Coral

 3.5-4 Malachite 3.5-4 Tourmaline 7-7.5

Corundum
(Sapphire / Ruby)

 9 Marcasite 6-6.5 Turquoise 5-6

Cubic Zirconia

 8.75 Moldavite 5.5 Variscite 4-5

Diamond

 10 Nephrite 6-6.5 Zircon (low) 6.5

Diffused Topaz

8

        

Diopside

 5-6 Obsidian 5-5.5 Zircon (med.) 7.5

  Onyx (Black) 6.5-7    

Dioptase

 5 Opal 5-6.5 Zoisite 6-7

Emerald

 7.5-8 Pearl 2.5-4.5
.
.

Epidote

 6-7 Peridot 6.5-7
.
.

Fluorite

 4 Quartz 7
.
.

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