Amazonite to Fluorite Tumbled gemstone
Alphabetical listing, from A to F of tumble polished gemstone, including Amazonite, Amethyst, Aquamarine, Bloodstone, Carnelian, Citrine, Emerald and Fluorite. Tumbled size range from large down to extra small.
Amazonite is also known as Amazonstone and it is a microcline feldspar. Common sources are Russia, Brazil and Madagascar.
Amethyst is violet variety of quartz and these beautiful tumble polished amethyst, with a striking banded chevron appearance, are from South Africa.
Angelite is a variety of anhydrite, discovered in Peru towards the end of the last century. This tumble polished stone will revert to gypsum if exposed to water.
Apache tear stone is a rounded pebble of obsidian. It is a dark coloured volcanic glass of rhyolite composition exhibiting conchoidal fractures when broken.
Aquamarine has good hardness (7.5 to 8 on the Mohs scale) and a wonderful shine in clear cut examples. That hardness makes it very tough and protects it to a large extent from scratches. Iron is the substance which gives aquamarine its colour, a colour which ranges from an almost indiscernible pale blue to a strong sea-blue.
This Aventurine is a form of translucent green quartz with platy mineral inclusions, such as Mica, that gives it a shimmering appearance.
This is a hard black agate from the chalcedony group, sometimes known as Black Onyx.
Bloodstone is a heliotrope variety of Jasper or Chalcedony, traditionally exhibiting red inclusions of hematite in dark green Jasper.
Blue Lace Agate is concentrically banded chalcedony, from southern Africa, where alternate layers of blue are interspersed with clear or white chalcedony.
Botswana Agate is a grey banded chalcedony, often with exceptionally attractive colourful banding and patterns. Originates in Botswana, Africa. Our most popular Agate, alongside the Pink Botswana.
This Botswana Agate is a predominently pink banded chalcedony, often with exceptionally attractive colourful banding and patterns. Originates in Botswana, Africa. Our most popular Agate, alongside the Grey Botswana.
Brazilian Agate is predominently orange Carnelian coloured chalcedony with occasional bands of white or lighter orange and cream/brown.
A ferriferous variety of magnesium silicate Enstatite in which some the Magnesium is replaced with Iron. Higher quantities of Iron result in Hypersthene.
Carnelian Agate is a brownish red variety of chalcedony; owing its colour to the presence of iron oxide.
Chiastolite is a variety of Andalusite (An Aluminium Silicate). This material, from Zimbabwe, exhibits the characteristic 'cruciform' pattern in cross-section due to carbonaceous inclusions.
This secondary copper mineral is associated with quartz, azurite, malachite and others. Found as glassy botriodal masses, vein infill or crusts and sometimes confused with Turquoise
Chrysoprase is a gemstone variety of chalcedony that contains small quantities of Nickel. It is generally apple green but varies in intensity with darker hues being called Prase.
Citrine is a yellow to orange variety of quartz.The colour for most gem citrine is produced by heat treating Amethyst.
Dalmatian Stone (sometimes incorrectly called Dalmatian Jasper) is a pale grey, cream or beige mix of feldspar and quartz with dark spots of iron oxide, tourmaline and other minerals.