Cabochon cut: The art of rounding a gem without facets into the shape of a highly-polished dome.
Carat: Used to denote the weight of gems.
Cabochon Cut
A gemstone cut, that is flat on the bottom and rounded on the top. Can be any shape, from round to free form, as long as the above two rules apply. Back to Index ...
Cabochon Cut A gem that is cut round without facets into the shape of a smooth polished dome. It lacks the facets that are on most stones.
Cabochon Cut
A cabochon shaped gemstone resembles a dome as it comes in round shape with no facets. Generally onyx stone is cut in a cabochon shape.
Cameo ...
Cabochon cutting is most often used for translucent and opaque gems and such pieces generally have a flat bottom and a smoothly curved top called a dome.
[Faceted peridot, cabochon cut lapis lazuli] ...
Cabochon cut
The word cabochon is derived from the old Norman French word caboche, meaning head. A cabochon is a polished gemstone with a flat bottom (or slightly rounded bottom) and a convex or rounded domed top.
Cabochon cut emeralds, if they have a pure deep color and are not too included, can be very beautiful and fall into the expensive price range.
A cabochon cut ruby with six rays
Star sapphire
A cabochon cut sapphire that normally has six rays, rarely twelve ...
Intricately carved cabochon cuts known as "Glyptic" gem carvings, date back to the 7th millennium BC, and were popularized throughout the ancient world, from Egypt (scarabs); to Etruria, Greece and Rome (signets, gods); ...
It is also known as cabochon cutting, the simplest and most common lapidary form. Opaque and translucent stones are designed in this variety. Transparent stones with too many inclusions are also cut into cabochons to use it optimally.
Asterism:An optical phenomenon displayed by certain gemstones such as rubies or sapphires that reflects the shape of a star on the surface of a cabochon cut from the stone. The stars may have four, six, or twelve rays.
Aquamarines are usually faceted but when they are cabochon cut, a cat's eye effect or asterism may appear. Aquamarines belong to the beryl family of stones. Aquamarine has a hardness of 7.5-8 and a specific gravity of 2.65-2.85.
Special effects, such as asterism, chatoyancy, adularescence and opalescence cannot be achieved without a cabochon cut. Calibre cut: A style of gemstone cut, usually utilized for small sizes.
Of these the first, or cabochon cutting, is probably the most ancient. The term comes from a French word signifying a bald pate (caboch, from Latin cabo, a head). The usual round cabochon cut closely resembles the top of a head in shape.
These star rubies are cut in a smooth domed cabochon cut to display the effect. The star is best visible when illuminated with a single light source: it moves across the stone as the light moves.
Transparent stones of clean color have been faceted, and chatoyant specimens have been cabochon cut.
Jet is frequently cabochon cut. Gagate has been mined near Whitby (on the Yorkshire coast of England) since prehistoric times. It is also found in Spain.
Cabochon cuts are popular with opaque stones and those with asterisms or chatoyancy. In rings, most cabochon cuts feature a rounded dome surface with a flat base.
Jet is frequently cabochon cut. Most jet is from Whitby, England; jet has been mined near Whitby (on the Yorkshire coast of England) since prehistoric times.
You can also find smaller sapphires in round brilliant cuts and a wide variety of fancy shapes, including triangles, squares, emerald cuts, marquises, pear shapes, baguette shapes, and cabochon cuts, or smooth domes.
Cabochon cut stones of this variety show the chatoyancy (small ray of light on the surface) that resembles the feline eye of a tiger.
In Arts and Crafts jewelry, cabochon cuts, usually bezel-set, were preferred over faceted stones and silver was preferred over gold. Humble materials, like brass and copper, were valued and used to create jewelry.
cat's-eye Phenomenal effect in cabochon cut gemstones resembling the iris of a cat's eye.
clarity One of the "four Cs" of quality grading, referring to the presence or absence of inclusions or flaws.
color See body color, key color.
Cabochon cutting, or cabbing, is often performed by simply holding the stone in the fingers, but it is more commonly done by dopping (attaching with adhesive wax or glue) the stone to a wooden or metal dopstick.
Rubies that are not cut with facets and have a rounded top are referred to as cabochon cut. This type of cut will result in reflections of light in a star pattern across the stone, known as Asterism or "Star Rubies.
Star rubies and sapphires - A cabochon cut stone with an inclusion that creates a star effect.
Step cut - Emerald cuts, or baguettes, where the facets are four sided and run parallel to the girdle.
The name given to a gem which when cabochon cut shows a single light streak across its face. A semi-precious variety of quartz found in South Africa, it may be yellowish-brown, bluish, or red in color.
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This stone has been recently used for Zuni fetish carvings and in some jewelry (beads and cabochon cut stones). Rainbow calsilica was only recently found in Mexico or Northern South America (it's origin remains mysterious).
These stones are usually cabochon cut to display the beautiful spoke-like star. These stones are only mined in Colombia, South America.
Malachite is often cabochon cut because of its opaque body. Malachite gets its name from the Greek word Malake meaning "mallow", in reference to its low hardness. Do not clean this stone in abrasive gem cleaner, use a polishing cloth. Learn more>>> ...
Light rays form star-like effect in certain cabochon cut gemstones. They can be four-rayed, 6-rayed or, very rarely, 12.
Band Detailing:
An added feature or element to a ring or band.
ASTERISM A "star" or pattern of rays, typically six rays, crossing in a single spot on a cabochon cut gemstone when viewed under a single source of light.
Tiger’s Eye
The name given to a gem which when a cabochon cut shows a single light streak across its face. A variety of quartz found in South Africa, it may be yellowish-brown, bluish, or red in color.
A lentil cut stone is a cabochon cut in which the upper and lower portions of the stone are identical.
LINDE STAR SAPPHIRE ...
Cats Eye - Chatoyancy is a phenomenon seen in various gems when they are cabochon cut, resulting in a bright single line down the center.
Ceylon Sapphire - These deep royal blue sapphires from Sri Lanka, formally Ceylon, are the finest in the world.
CABOCHAON:
Gemstone with a smooth, carved surface that is dome-like with no facets and a flat base. The popular cabochon cut is commonly used with opaque and translucent stones like opals, moonstones, jade, and turquoise.
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A star sapphire is a sapphire that exhibits an asterism in the form of a colorless, six-rayed star that reflects light. Star sapphires are cabochon cut.
A cabochon cut on a sapphire shows the very distinctive raw beauty of the particular crystal. The look is very unique and not like any other type of appearance in a gemstone. For this reason we do not classify these stones by cut alone.
This opaque stone is almost always cabochon cut. It has a hardness of 5 to 6, a refractive index of 1.61 to 1.65, and a specific gravity of 2.6 to 2.9. It is commonly found in the arid southwest United States and Mexico.
Tiger's eye - A semi-precious variety of quartz found in South Africa, in yellowish-brown, blue or red. When cabochon cut, shows a single light streak across its face ...
Color from honey yellow to greenish and brownish yellow stones. The cat's eye effect are a reflection of light from the inclusions, can only be seen on cabochon cut stones.
Hardness : 8.5 Refractive Index : 1.746-1.744 Density : 3.709-3.72 ...
Gagate is more commonly known as jet and is a variety of coal called lignite. It is frequently carved or cabochon cut. Hardness=2.5-4, S.G.=1.30-1.35.
Coral: A calcareous marine organism that is fashioned into an opaque gem that ranges in colours of white, pink, orange, red and black. Frequently seen carved, cabochon cut and as beads in antique and period jewellery. Tends to be a bit porous.
These almandite garnets are translucent, purplish-red stones that show four- or six-ray stars when cabochon cut, or are transparent, deep red stones that can be faceted. The asterism is the result of silky rutile inclusions.
These include oval, emerald, pear, marquise, trillion, cushion, princess, heart and more. The cabochon cut is a smoothly domed top with a flat bottom, used mostly on gemstones such as opal, cat's eye, star sapphire, star ruby etc.
Sapphires with inclusions of tiny, rutile needles exhibit an optical property called asterism. This is the star shaped effect seen in star sapphires and is usually only seen in cabochon cuts.
Gemstones ruled by Ketu include Cat's eye chrysoberyl, beryl, apatite,tourmaline and other yellow to greenish-brown gems which display a strong chatoyant "cat's eye" light reflection on the surface and often within the crystal when cabochon cut.
Chatoyancy - Chatoyancy is the appearance of a shimmering light that moves across the surface of certain stones and appears as a narrow line similar to a cat's eye. This effect is most noticeable on a cabochon cut stone.
The other mineral species known as Jade is Jadeite, which is a variety of Pyroxene. Nephrite Jade is an ornamental stone used in carvings, beads or cabochon cut gemstones. Mohs Scale hardness is 6 - 6.5.
virtually any other stone - faceted or cabochon cut.
We offer a great selection of natural gems from onyx
to diamond, synthetics like lab created sapphires and
Gilson opal, and simulated gemstones including ...
It comes in a variety of shades ranging from purplish- and bluish-red to orange-red. Like sapphire, there is also a translucent variety of ruby that can display a six-point star when cut in a smooth domed cabochon cut.
Rubies can be found in a variety of cuts and fancy shapes including triangles, squares, emerald cuts, marquises, pear shapes, baguette shapes, and cabochon cuts (dome shape).
Smaller sizes are also found in rounds, ovals, pear shapes and marquise cuts. You may have to look a while for an unusual shape in a larger size. Due to their rich color, emeralds are also spectacular when cut in a smooth-domed cabochon cut.
 See also: Cabochon, Stone, Cut, Gemstone, Color
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