| Gemstone Chart |
 Natural Apatite
Apatite displays strong fluorescence under short wave ultra-violet light. There is a particularly intense and deeply saturated, geenish-blue (aka swiss blue) variety from Madagascar known as "Neon Apatite" that is becoming quite popular in the gem trade.
Color: yellow, green, below, violet
Categories: semi-precious stone
Chemical Composition: Phosphate group
Crystal Group: Hexagonal
Refractive Index: 1.63-1.64
Hardness: 5
Density: 3.17-3.23
Occurrence: Burma, Ceylon, Madagascar, Mexico, Canada, India
|  Natural Eudialyte
eudialyte is a rare, plummy-red stone. Eudialyte's name comes from the Greek words "eu" and "dialytos", meaning "easy to dissolve" which refers to the mineral's solubility in acids.The stone's distinctive grey, black or white patterning gives each piece of jewelry a unique beauty.
Color: orange red
Categories: semi-precious stone
Crystal Group: Trigonal
Refractive Index: 1.596 - 1.602
Hardness: 5 - 6
Density: 2.88
Occurrence: Sweden; Kippaw,Canada
|  Natural Fire Agate
Fire Agate is a variety of agate containing inclusions of goethite or limonite, it is a layered stone. The layers are small enough that light entering them forms interference colors known as "fire."
Color: Orange, green, purple, Red, blue, peacock
Categories: semi-precious stone
Chemical Composition: SiO2
Crystal Group: Trigonal
Refractive Index: 1.544 - 1.553
Hardness: 7
Density: 2.65
Occurrence: Central Mexico, Arizona USA
|  Natural Hessonite
Hessonite is one of the gem varieties of the garnet mineral, grossular. Hessonite is usually cinnamon brown and has been called "cinnamon stone". Hessonite can also be orange; this color is becoming common on the gem markets.
Color: Brownish-orange, brownish yellow, aurora red
Categories: semi-precious stone
Chemical Composition: Ca3Al2(SIO4)3
Crystal Group: Cubic
Refractive Index: 1.72-1.74
Hardness: 7.25
Density: 3.65
Occurrence: Sri Lanka, Mexico, Brazil, Canada, Madagascar
|  Natural Indicolite
Indicolite is a very beautiful stone which is also known as "Blue Tourmaline". It is much different from the other gemstones found in the world.
Indicolite is one of the rarer varieties of elbaite.
Color: Blue
Categories: semi-precious stone
Chemical Composition: (NaCa)(LI,MgFe,Al)9B3Si6(O,OH)31
Crystal Group: Hexagonal
Refractive Index: 1.624(+.005, -.005) - 1.644(+.006, -.006)
Hardness: 7-7.5
Density: 3.06 (.05, +.15)
Occurrence: Brazil, Namibia, U.S.A.
|  Natural Ruby
ruby is a pink to blood-red gemstone, a variety of the mineral corundum.Ruby has been the world's most valued gemstone for thousands of years. It was said to be the most precious of the twelve stones God created when he created all things and this "lord of gems" was placed on Aaron's neck by God's command.
Color: red, orangey red, violetish red
Categories: precious stone
Chemical Composition: AL2O3
Crystal Group: Hexagonal
Refractive Index: 1.759-1.778
Hardness: 9
Density: 4
Occurrence: Burma, Thailand, East Africa, Vietnam, Madagascar.
|  Natural Sapphirine
Sapphirine is a rare mineral, a silicate of magnesium and aluminium.Though Sapphirine clearly falls into the "rare stone" category, it is a relatively durable stone with a Moh's hardness of 7.5. Sapphirine's very distinctive appearance along with their somewhat unusual durability have made them fairly popular with collectors.
Color: Pale blue, bluish gray, greenish gray, green, purplish pink
Categories: semi-precious stone
Crystal Group: Monoclinic
Refractive Index: 1.714-1.723
Hardness: 7.5
Density: 3.4-3.5
Occurrence: U.S.A., U.K., Sweden, Czechoslovakia, Japan, South Africa, Greenland, Madagascar, Italy, Sri Lanka
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