Cabbing Lapidary Gemstone
Cabbing Lapidary Gemstone
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APATITE COLLECTION Blue Green Gemstones Natural Specimens Cabbing Lapidary 7423 $14.96 |
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APATITE COLLECTION Blue Green Gemstones Natural Specimens Cabbing Lapidary 7411 $14.96 |
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APATITE COLLECTION Blue Green Gemstones Natural Specimens Cabbing Lapidary 7422 $14.96 |
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APATITE COLLECTION Blue Green Gemstones Natural Specimens Cabbing Lapidary 7424 $14.96 |
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---ARIZONA FLAME RED HEMATITE--- 185 Grams,Gemstone, Rock Slab,Cabbing,lapidary $5.99 |
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----Orange Banded Onyx----280 Grams,Gemstone,Jasper, Rock Slab,Cabbing,Lapidary $3.99 |
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-----JOY CREEK JASPER-----200 Grams,Gemstone,Jasper, Rock Slab,Cabbing,lapidary $4.99 |
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----RAIN FOREST JASPER---- 195 Grams,Gemstone,Jasper, Rock Slab,Cabbing,lapidary $10.50 |
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-Tiffany Stone-4.9 lbs,Gemstone BERTRANDITE,Jasper, Rock,Rough,Cabbing,lapidary $11.49 |
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----Royal Blue Sodalite----150 Grams,Gemstone,Jasper, Rock Slab,Cabbing,lapidary $6.49 |
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-Tiffany Stone-21 lbs,Gemstone BERTRANDITE,Jasper, Rock,Rough,Cabbing,lapidary $28.00 |
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-----RARE FANCY JASPER-----225 Grams,Gemstone,Jasper, Rock Slab,Cabbing,Lapidary $6.99 |
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APATITE COLLECTION Blue Green Gemstones Natural Specimens Cabbing Lapidary 7426 $14.96 |
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APATITE COLLECTION Blue Green Gemstones Natural Specimens Cabbing Lapidary 7412 $14.96 |
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Amethyst Crystal Slab Cabbing Lapidary Gemstone Cabochon Rough Slab #294 $9.95 |
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Aventurine Light Green Slab Cabbing Lapidary Gemstone Cabochon Slab #318 $3.95 |
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Banded Jasper Slab Cab Cabbing Lapidary Gemstone Cabochon Rough Slab #309 $3.95 |
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Dinosaur Dung Coprolite Slab Cabbing Lapidary Gemstone Cabochon Rough #285 $3.95 |
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Fossil Stone Slab Mexico Cabbing Lapidary Gemstone Cab Rough Cabochon Slab #288 $3.95 |
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Green & Yellow Jasper Slab Cabbing Lapidary Cab Gemstone Cabochon Slab #264 $3.95 |
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Mookaite Jasper Slab Mookite Cabbing Lapidary Cab Gemstone Cabochon Slab #302 $3.95 |
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Rainbow Fluorite Slab Cabbing Lapidary Gemstone Cab Cabochon Rough Slab #258 $3.95 |
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Ruby in Black Spinel Slab Cabbing Lapidary Cab Gemstone Cabochon Rough #113 $9.95 |
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Sodalight Slab Cabbing Lapidary Gemstone Cab Cabochon Rough Slab #261 $3.95 |
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Sunstone Slab Shiller Cabbing Lapidary Cab Gemstone Cabochon Rough Slab #299 $3.95 |
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TREE AGATE 1/2 Lb Lots Gemstones Cabbing Rough Natural Specimens Lapidary $11.21 |
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AMAZONITE 1/2 Lb Lots Gemstones Cabbing Rough Natural Specimens Lapidary $12.71 |
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Bright AMETHYST 1/2 Lb Lots Gemstones Natural Specimens Cabbing Rough Lapidary $11.96 |
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MEXICO MIX 1/2 Lb Lots Gemstone Crystal Cabbing Rough Natural Specimens Lapidary $11.21 |
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ROSE QUARTZ 1/2 Lb Lots Gemstones Cabbing Rough Natural Specimens Lapidary $11.21 |
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Fossil Stone Slab Mexico Cabbing Lapidary Gemstone Rough Cabochon Slab #098 $3.95 |
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Fossil Stone Slab Mexico Cabbing Lapidary Gemstone Rough Cabochon Slab #099 $3.95 |
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Orange Calcite Slab Cab Cabbing Lapidary Gemstone Cabochon Rough Slab #742 $3.95 |
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Carnelian Agate Banded Slab Cabbing Lapidary Gemstone Cabochon Rough Slab #210 $3.95 |
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Banded Jasper Slab Cab Cabbing Lapidary Gemstone Cabochon Rough Slab #246 $3.95 |
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Fossil Stone Slab Mexico Cabbing Lapidary Gemstone Rough Cabochon Slab #216 $3.95 |
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Yellow Calcite Cabbing Cab Rough 2 pound Lot Gemstones Healing Newage Lapidary $9.99 |
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MOONSTONE 1/2 Lb Lots Cabbing Rough Natural Crystal Specimens Lapidary Gemstones $11.21 |
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Fossil Stone Slab Mexico Cabbing Lapidary Gemstone Cabochon Rough $4.95 |
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Fossil Stone Slab Mexico Cabbing Lapidary Gemstone Cabochon Rough $4.95 |
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APATITE COLLECTION Blue Green Gemstones Natural Specimens Cabbing Lapidary 7416 $14.96 |
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APATITE COLLECTION Blue Green Gemstones Natural Specimens Cabbing Lapidary 7421 $14.96 |
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SNOWFLAKE OBSIDIAN 1/2 Lb Lots Gemstone Mineral Specimens Cabbing Lapidary $14.21 |
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GARNET 1/2 Lb Lots Natural Gemstone Mineral Specimens Cabbing Rough Lapidary $11.21 |
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BLUE CALCITE 1/2 Lb Lots Natural Gemstone Specimens Cabbing Rough Lapidary $11.21 |
In the gemstone world, a cabochon is a stone that is cut with a highly polished rounded or convex top with no faceting, with a flat or slightly domed base. A cabochon may be cut in any shape, though oval is by far the most common. The term comes from the French caboche, meaning knob or small dome. Certain stones are almost always cut "en cabochon," including opal, turquoise, onyx, moonstone, and star sapphire. In the gemstone world you will often hear the term cabochon shortened to "cab."
Technically, cabochons are not really "cut." Rather they are shaped and then polished. It is thus a much simpler task to produce a cabochon than it is to cut a faceted gem with many faces. Before the art of faceting was developed, all gemstones were produced as cabochons, though some were intricately carved as well.
Faceted gemstones made their appearance in European jewelry during the late 13th and early 14th centuries. With the advent of the horizontally turning cutting-wheel in the late 1400's came the possibility of designing and repeating elaborately conceived geometric faceting schemes, thereby controlling and enhancing the light coming from within the stone.
The fascination with geometry and reflected light during the Renaissance accelerated the development of a sophisticated lapidary art. Starting with the Renaissance gem-cutting trade in Bruges, to Venice, Florence and eventually the whole of Europe, the management of light became the central theme in gem cutting.
Once the technology and skill was available to facet gemstones, why were cabochons still produced? The question is an interesting one because different gems are cut as cabs for different reasons. In many cases it is because the gem has special properties that are displayed only when it is cut as a cabochon. Examples are gems that display asterism (the star effect) or chatoyancy (the cat's eye effect) or iridescence (e.g., opal) or adularescence (e.g., moonstone).
Most gems that are opaque rather than transparent are cut as cabochons rather than faceted. You will also see lower grade material in gemstones such as sapphire, ruby and garnet cut as cabs. If the gem material has very good color but is not sufficiently transparent or clean to be faceted, it can still be shaped and polished to be a very attractive cabochon. It is also common to cut softer stones as cabs, since gems with a hardness less than 7 (on the Mohs scale) can easily be scratched by the quartz in dust and grit. Minute scratches show much less on a cabochon than on a faceted stone.
About the Author:
GemSelect is a leading online dealer in fine gemstones, specializing in sapphire, spinel, tourmaline, topaz and zircon. Cabochon Gemstones
Article Source: ArticlesBase.com - Why Some Gemstones are Cut as Cabochons
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