CAVITY:
A tiny opening in the stone where a piece of diamond is missing.
Cavity
A type of inclusion consisting of a large or deep opening in a diamond.
Chip ...
Cavity
A Cavity is exactly what it sounds like; a hole in the Diamond usually caused by the Cutting Process (Kind of like pulling a knot out of a tree).
Bruise ...
Cavity A hole or void in a diamond or other gemstone, either internal or extending to the surface.
Cavity: A large or deep opening in the diamond
Chip: A tiny piece missing caused by normal wear and tear, or by cutting.
Cavity: It is formed when gemstone cutter cuts the raw stone too much to remove the big crystal inclusion. It looks like a deep opening in the stone.
Cavity - An opening on the surface of a fashioned diamond. It may be cause by cleavage, by a blow, or may have been pulled out from the surface during the polishing operation.
cavity An indentation in the stone's surface caused by the opening of an inclusion during or after the diamond has been polished.
Cavity containing well-formed, flesh-coloured crystals to 6mms.
HEULANDITE
Moonen Bay, Duirinish, Isle of Skye.
Transparent, heulandite crystal to 3mms with mesolite inclusions.
Cavity
diamond flaw represented by a large hole in a diamond.
Canary diamonds ...
Geode
Cavity within a rock, in which crystals line the inner surface and grow toward the center.
Jewelry Frequently Asked Questions
How can I test pearls and care for them?
Geode is a cavity within a rock which is a crystal line. It grows from inner surface to center in a gemstone. Usually geode found in Amethyst and Peridot stones.
Girdle ...
of the oral cavity.
The transparent quartz inducts get along with the life, and one light-tight
silence and agreement.
Rockwool stud cavity insulation in drywall assembly under construction.
A hollow rock cavity usually containing some form of one or more gemstones. Amethyst and Peridot are examples of gemstones found in geodes.
Girdle
The widest point in circumference of a gem.
Vug...An open cavity in rocks, often lined with crystals.
Xenolith .. rock enclosed in magma.
alpine cavity synonym of vug, a cavity in rock that is lined with long, slender crystals.
Peritonitis: Abdominal cavity Infection, a possible result of a navel piercing, particularly with an umbilical hernia. Possibly fatal.
The word "druse" refers to a rock surface (usually a cavity) covered with tiny individual crystals, such as are found inside geodes or in larger pockets of mineral deposits.
Most banded agates occur as nodules and geodes within ancient volcanic rock or lava, where cavities where filled by silicate and zeolitic minerals deposited in layers upon the walls of the cavity, ...
What was presumed to be the largest-ever cavity was discovered in 1900 in Rio Grande do Sul. The almond measured ten by five by three metres (33 by 16 by 10 ft.) and weighed an estimated eight tonnes.
A large glass-filled surface cavity is clearly visible in this treated Thai/Cambodian ruby cabochon. The glass has a lower luster than the surrounding ruby, and in places has started to devitrify (crystallize).
Agate is formed when circulating ground waters approaching saturation in silica content fill a cavity in a host rock or dissolve pre existing material such as bone or shell.
Consensus amongst leading opal experts is the Virgin Rainbow whilst formed in a cavity once occupied by a deceased Belemnite - a 120 millions year old squid like creature, is a solid opal formed from silica gel and as such is not a 'fossil'.
Each individual agate forms by filling a cavity in a host rock. As a result, agate often is found as a round nodule with concentric bands like the rings of a tree trunk.
The cavity inside a geode is sometimes filled with Drusy Quartz crystals.
Druze is a layer of crystals that form within a mineral crust, like the inner cavity of a geode. Amethyst crystals are often found in a druze. The inner cavity of agate geodes are often lined with a druze of sparkling quartz crystals
DUCTILE ...
If you have ever been to a dentist to have a cavity filled or get a root canal, you have experienced the hardest substance on earth.
Quartz druze is a layer of quartz crystals that form within a mineral crust, like the inner cavity of a geode. For example, the inner cavity of agate geodes are often lined with a druze of sparkling quartz crystals.
QUINZITE OPAL ...
Above left - Radiating spray of natrolite crystal in zeolite cavity. Above right - Zeolite cavity of thin natrolite crystals with stilbite overgrowth making them look thicker in appearance. Collected 1994.
Geode
A rock which contains a cavity lined with quartz or other gemstone crystals.
Girasol
A gemstone with a glowing, milky sheen that moves as the stone is moved in the path of a light source. Opalescence.
Geode - A rounded rock with a cavity filled or lined with another mineral.
Glassy - A luster, slightly less bright than Adamantine. (Quartz)
Globular - Rounded habit, usually somewhat irregular.
Geode: A hollow rock cavity, usually containing some form of one or more gems. Two excellent examples of gems often found in geodes are amethyst and peridot.
Inside this cavity was placed the insect which was in fact contemporary to the time of the faking.
A Speculum is a device that allows one to gently open a body cavity (i.e. the vagina or anus). It generally consists of two smooth spatulas which move apart when the handle is squeezed.
See our full Speculums range
Spiked Body Spiral ...
The cavity remaining in the investment is an exact duplicate of the original wax and is then filled with molten metal.
An agate is formed by filling a cavity in a host rock; most of the world's agates developed in ancient volcanic lava.
Agates are found in all colors, though green and blue are quite rare
Hardness: 6.5 to 7 ...
Agate is a type of chalcedony quartz that forms by filling a cavity in a rock. Varieties of agate are formed by the differences in shape and colors. The varieties in color can be anywhere in our color spectrum.
When magma in the upper part of the mantle becomes concentrated with volatiles it cools into a cavity called a pegmatite.
Anatomy Appraisal Approximate Size & Shape Asscher Cut Bank Wire Blemish Bow Tie Brilliance Brilliant cut Bruise Carat Weight Cavity Certification Chip Clarity Cloud Color Crown Crown Angle Crystal Culet Cushion Cut Customer Reviews Cut Delayed ...
After the wax is burned off in an oven, a cavity remains, which is filled with molten metal through an opening. The investment is broken away from the hardened metal, which is then ready for polishing or ornamentation.
One good example of Druzy is the crystals filled inside the cavity of a geode.
Peritonitis
Infection of the lining of the abdominal cavity.
Piercing Gun
A spring-loaded device that is used to fire jewelry through the skin, most often the ear lobe.
A term used to describe an imperfection on the surface of a finished diamond, such as a scratch or cavity.
Blue Diamond
A diamond with a distinct blue body color, usually a light blue.
Druse: A crust of crystals that line a rock or geode cavity.
Ductile: A ductile substance can be easily stretched into thin wire. Gold is the most ductile metal.
Blemish: Any surface imperfection on a cut diamond. Such as a nick, knot, scratch, abrasion, minor crack or cavity.
Blue ground: Unoxidized rock in diamond pipes.
Amethyst crystals are often found in a druze, and the inner cavity of agate geodes are often lined with a druze of sparkling quartz crystals.
PIT - An indentation on the surface of a diamond, caused by a blow, knot or the opening of a cavity during cutting or polishing.
Ivory is the material found in the tusks or tooth of mammals. The tusks or tooth obtained from any mammal has the identical structure of pulp cavity, dentine, enamel and cementum.
A process in which a wax model is encased in plaster, the plaster flask is then heated in a kiln to the point where the wax is burnt out, leaving a cavity into which molten metal is poured ...
BLEMISH - Any surface imperfection on the surface of a gemstone. For example, on a diamond, one would be referring to a nick, knot, scratch, abrasion, minor crack or fissure (cavity), or a poor polish.
The crust may be found on the surface of minerals or rocks, or as a lining on the interior cavity of a geode. The adjective used to describe this formation is druzy or drusy (druzy quartz, for example).
Agate - Vary-colored chalcedony characterized by concentric banding of color. Formed by precipitation of SiO2 onto gas cavity walls in volcanic rock host. A myriad of names describe different varieties; a few common ones are: ...
Waxing: A process of casting whereby a wax model is encased in an investment similar to plastic, the investment is agitated mechanically or put into a vacuum to remove air bubbles and placed in an oven where the wax is burned off, leaving a cavity ...
When the nucleus is sufficiently covered with nacre, the pearl is detached from the shell. The nucleus is removed and the cavity is filled with an epoxy resin and backed by a mother-of-pearl plate. Mabe pearls are sometimes called blister pearls.
Cavity: An angular opening created when part of a feather breaks away.
Indented Natural: A portion of the diamond's rough or original surface that dips below the polished surface.
Knot: A crystal that extends to the surface.
Druse or Drusy Crust of tiny crystals lining a rock cavity. These are minerals with their crystal structure exposed, like the inside of a geode on a smaller scale. Often, drusy stones exhibit more richness of color than their composite mineral.
00:19, 11 January 2008 (hist) (diff) N Druse (New page: A surface covered with small projecting crystals, usually lining the sides of a cavity.) ...
 See also: Crystal, Stone, Mineral, Jewel, Color
  
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