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Gemstones Polished

Our polished gemstones and agates are natural undyed material and sold in 1/4 pound lots. There are approximately 40 to 60 pieces per 1/4 pound. Piece sizes range from approximately 1/2 to 3/4 inch. Gemstones have natural variation in their exact color, pattern and shape. Use our Quick Order Checklist to order rapidly using a list. We also have a page of unpolished rough minerals.

Read more about using gemstones in mosaics at the bottom of this page.

Displaying products 1 - 30 of 41 results
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Sodalite polished gemstones 1/4 pound
Sodalite PG
Price: $5.28
Sodalite PG
polished gemstones 1/4 pound
Carnelian polished gemstones 1/4 pound
Carnelian PG
Price: $5.28
Carnelian PG
polished gemstones 1/4 pound
Amethyst polished gemstones DARK 1/4 lb
Amethyst DARK PG
Price: $9.07
Amethyst DARK PG
polished gemstones 1/4 pound
Apricote Agate polished gemstones 1/4 lb
Apricote Agate PG
Price: $5.28
Apricote Agate PG
polished gemstones 1/4 pound
Green Moss Agate polished gemstones 1/4 lb
Green Moss Agate PG
Price: $4.51
Green Moss Agate PG
polished gemstones 1/4 pound
Tree Agate polished gemstones 1/4 lb
Tree Agate PG
Price: $4.51
Tree Agate PG
polished gemstones 1/4 pound
Turritella Agate polished gemstones 1/4 lb
Turritella Agate PG
Price: $4.85
Turritella Agate PG
polished gemstones 1/4 pound
Amazonite Agate polished gemstones 1/4 lb
Amazonite Agate PG
Price: $7.56
Amazonite Agate PG
polished gemstones 1/4 pound
Chrysocolla Agate polished gemstones 1/4 lb
Chrysocolla Agate PG
Price: $5.28
Chrysocolla Agate PG
polished gemstones 1/4 pound
Dalmation Stone polished gemstones 1/4 lb
Dalmation Stone PG
Price: $4.51
Dalmation Stone PG
polished gemstones 1/4 pound
Jasper polished gemstones 1/4 lb
Jasper PG
Price: $4.10
Jasper PG
polished gemstones 1/4 pound
Zebra Marble polished gemstones 1/4 lb
Zebra Marble PG
Price: $4.51
Zebra Marble PG
polished gemstones 1/4 pound
Peach Quartz polished gemstones 1/4 lb
Peach Quartz PG
Price: $5.28
Peach Quartz PG
polished gemstones 1/4 pound
Yellow Quartz polished gemstones 1/4 lb
Yellow Quartz PG
Price: $5.28
Yellow Quartz PG
polished gemstones 1/4 pound
Unakite polished gemstones 1/4 lb
Unakite PG
Price: $4.51
Unakite PG
polished gemstones 1/4 pound
Obsidian polished gemstones 1/4 pound
Obsidian PG
Price: $4.52
Obsidian PG
polished gemstones 1/4 pound
Buddstone polished gemstones 1/4 pound
Buddstone PG
Price: $4.52
Buddstone PG
polished gemstones 1/4 pound
Banded Carnelian polished gemstones 1/4 pound
Banded Carnelian PG
Price: $4.25
Banded Carnelian PG
polished gemstones 1/4 pound
Bloodstone polished gemstones 1/4 pound
Bloodstone PG
Price: $4.57
Bloodstone PG
polished gemstones 1/4 pound
Blue Chalcedony polished gemstones 1/4 pound
Blue Chalcedony PG
Price: $5.70
Blue Chalcedony PG
polished gemstones 1/4 pound
Moonstone polished gemstoness 1/4 pound
Moonstone PG
Price: $5.70
Moonstone PG
polished gemstones 1/4 pound
Green Quartz polished gemstones 1/4 pound
Green Quartz PG
Price: $3.99
Green Quartz PG
polished gemstones 1/4 pound
Rainforest Rhyolite polished gemstones 1/4 pound
Rainforest Rhyolite PG
Price: $4.58
Rainforest Rhyolite PG
polished gemstones 1/4 pound
Madagascar Rhodonite polished gemstones 1/4 pound
Rhodonite (Madagascar) PG
Price: $5.70
Rhodonite (Madagascar) PG
polished gemstones 1/4 pound
Sunstone polished gemstones 1/4 pound
Sunstone PG
Price: $4.10
Sunstone PG
polished gemstones 1/4 pound
Opal Olive polished gemstones 1/4 lb
Opal Olive PG
Price: $5.70
Opal Olive PG
polished gemstones 1/4 pound
Red Aventurine polished gemstones 1/4 pound
Red Aventurine PG
Price: $3.63
Red Aventurine PG
polished gemstones 1/4 pound
Magnesite nuggets gemstoness 1/4 pound
Magnesite Nuggets PG
Price: $3.43
Magnesite Nuggets PG
polished gemstones 1/4 pound
BROWN Tigers Eye polished gemstones 1/4 pound
BROWN Tigers Eye PG
Price: $5.28
BROWN Tigers Eye PG
polished gemstones 1/4 pound
Brecceated Jasper polished gemstones 1/4 lb
Brecceated Jasper PG
Price: $5.28
Brecceated Jasper PG
polished gemstones 1/4 pound
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Gemstones Used As Mosaic Tile

Natural Material

We do not sell dyed gemstones. All of our stones are natural material that has been rounded and smoothed by tumbling in silicon carbide grit and then polished with metal oxide.

Product Variation

The gemstones we sell have been running fairly consistent over the years, but there is always the potential for pattern, color and roundness to vary slightly from the product photographs.

Product Coverage

There is no straightforward answer to coverage for materials that are irregular in shape such as the gemstones. Certain pieces will be thin, and these do not always look right when you position them flat next to a piece that is much fatter or rounded. For this reason, the thin pieces are usually nested on end, or at least semi-overlapped, which is best accomplished by pressing them into thinset mortar (but can be done with glue as well). Nesting or overlapping the gemstones on end means that they cover less area than they would if laid flat, and that is why they are mostly used for accents in mixed-media mosaics instead of covering areas.

Area coverage would probably be about 2 to 3 square inches per 1/4 pound maximum, but probably less if you nest them a little as recommended. If you are serious about using gemstones for area coverage in a large mosaic, we strongly recommend first ordering a few units and making a prototype of your mosaic, maybe a small section 2 inches x 2 inches.

Compatibility

Gemstones can be used in mosaics with regular flat glass mosaic tile. Most pieces are fatter than 1/8-inch thick tile, and their raised rounded surfaces can add a dimensional element to an otherwise flat mosaic. However, thin pieces should be oriented so that they aren't covered by grout. You can use sand and glue to "shim up" thin pieces so that they are level with surrounding tile. If you are interested in using a lot of irregularly-shaped objects instead of flat tile, then consider using thinset mortar instead of glue. Thinset is sticky concrete, and you can press marbles and gemstones and other globular objects into it, which is a lot easier than trying to glue them to a flat surface.

Cutting

Cutting tumbled gemstones tends to mar their polished surfaces and is usually not done. We have cut some varieties of our gemstones in half with tile nippers and then glued them cut side down, which was conveniently flat. All that being said, the gemstones are different types of minerals, and some may be extremely hard or likely to shatter instead of cutting cleanly. As always, test your materials and methods before planning a large project around them.

Product Specifications

  • tumble-polished natural undyed gemstones.
  • material can vary by color and pattern.
  • 1/4 pound.
  • approximately 40 to 60 pieces per 1/4 pound.
  • Piece sizes range from approximately 1/2 to 3/4 inch.

More Information

For more information on how to design mosaics and use gemstones, tile and other vitreous materials to create artwork, see our page of Frequently Asked Questions
or our List of How-To-Mosaic Pages, which are topic specific.

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