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A DEFINITIVE GEOLOGICAL RECORD. CATALOGING SPECIMENS ACROSS THE WORLD'S MOST SOUGHT-AFTER FAMILIES.

Elestial Quartz

QUARTZ MOHS 7

Emerald

BERYL MOHS 7.5–8

Enstatite

PYROXENE MOHS 5–6

Epidote

SOROSILICATE MOHS 6–7

Faden Quartz

QUARTZ MOHS 7

Feldspar

FELDSPAR MOHS 6

Fire Agate

CHALCEDONY MOHS 6.5–7

Fire Opal

OPAL MOHS 5.5–6.5

MOHS

Fire Quartz

QUARTZ MOHS 7

Flint

CHALCEDONY MOHS 6.5–7

Fluellite

PHOSPHATE MOHS 3–4

Fluorite

HALIDE MOHS 4

Fossil Coral

CARBONATE MOHS 3–4

Fuchsite

MICA MOHS 2–3

Galena

SULFIDE MOHS 2.5

Garnet

GARNET MOHS 6.5–7.5

Garnet (Grossular)

GARNET MOHS 6.5–7.5

Garnet (Spessartine)

GARNET MOHS 6.5–7.5

Garnet (Uvarovite)

GARNET MOHS 6.5–7.5

Gaspeite

CARBONATE MOHS 4.5–5

Goethite

OXIDE MOHS 5–5.5

Golden Healer

QUARTZ MOHS 7

MOHS

Goldstone

MAN-MADE GLASS MOHS 5.5–6

Goshenite

BERYL MOHS 7.5–8

Grape Agate

QUARTZ (CHALCEDONY) MOHS 6.5–7

Green Aventurine

QUARTZ MOHS 6.5–7

Green Calcite

CALCITE MOHS 3

Green Fluorite

HALIDE MOHS 4

Green Kyanite

KYANITE MOHS 4–7.5

Green Opal

OPAL MOHS 5.5–6.5

Green Tourmaline

TOURMALINE MOHS 7–7.5

Grossularite

GARNET MOHS 6.5–7.5

MOHS

Hackmanite

SODALITE MOHS 5.5–6

Pink Halite

HALITE MOHS 2.5

Hematite

OXIDE MOHS 5–6

Rainbow Hematite

OXIDE MOHS 5–6

MOHS

Hemimorphite

SOROSILICATE MOHS 4.5–5

Herkimer Diamond

QUARTZ MOHS 7

Heulandite

ZEOLITE MOHS 3.5-4

Hiddenite

PYROXENE (SPODUMENE VARIETY) MOHS 6.5-7

Honey Calcite

CALCITE MOHS 3

Howlite

BORATE MOHS 3.5

Blue Howlite

BORATE MOHS 3.5

Idocrase

SOROSILICATE MOHS 6.5
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