The following is a list of Macrocrystalline gems and minerals listed in our database. Click the pictures to get full data, click the X to remove the gem from the list.
Citrine: Citrine is an attractive type of quartz, which is the commonest mineral on the earth's surface. But citrine itself is an uncommon macrocrystalline variety. Its yellow color brought about by its iron hydrate content, its reddish yellow from a trace of ferric iron. It forms hexagonal prisms, terminated by pyramidal shapes. Its faces are often striated, and the crystals twinned and distorted, having (read full)
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Chalcedony is a compact form of silica, composed of microscopic quartz crystals. It is softer than quartz and denser than opal. Its app
Phosphophyllite is a very rare mineral, a hydrated zinc iron manganese phosphate with a monoclinic crystal system.
It appears as long 
Ruby is the most valuable variety of Corundum.
The color varies from fiery vermilion to violet red, but because rubies are pleochroic,
Platinum is a rare and precious metal that occurs as a Native Element, one of the rarest in the Earth's crust.
It resembles silver, bu