Rock Crystal Quartz
I really had no thought of writing an essay about what I considered the least interesting of the crystalline quartz varieties: rock crystal.
Rock crystal
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For the manufacture of spheres, the pieces of rock crystal used should be flawless, but some people do prefer pieces with inclusions for their «natural» look.
Rock Crystal
Rock Crystal is the clear colourless (white) form of the mineral quartz. As such it is related to amethyst which is the purple form of quartz, and also to citrine which is the yellow variety.
Rock crystal
The transparent, colourless variety of quartz is still known as rock crystal. Long ago, people believed that rock crystal was a compact form of ice: in fact 'crystallos' means 'ice'.
Rock crystal - A mineral; see also quartz
Rope chain - Chain with a spiral appearance; like two thick strands woven together
Rose gold - An alloy of gold and copper, usually a pinkish shade ...
Rock Crystal Quartz (-036)
aka Clear Quartz, Rock Crystal, Baffa Diamond, Bohemian Diamond, Brighton Diamond, Bristol Diamond, Buxton Diamond, Cornish Diamond, Dauphin Diamond, German Diamond, Horatio Diamond, Hot Springs Diamond, ...
Rock Crystal: see "Quartz".
Rose Cut: A style of stone cutting that produces a gem with a flat, unfaceted base and a somewhat dome-shaped top that is covered with a varied number of triangular facets and terminates in a point..
Rock Crystal: see Quartz.
Rolo link chain: A chain composed of individually linked round or oval rings resembling a standard cable chain, but with thicker rings.
Rock Crystal
Rock crystal is the transparent and purest form of quartz and resembles solid glass.
Rutilate Quartz ...
ROCK CRYSTAL
Rock crystal is a transparent, crystalline mineral. Rock crystal is the purest form of quartz and a semi-precious stone.
ROLLED GOLD ...
Rock Crystal, Sapphire, Amethyst, Bloodstone
Aquamarine
Amethyst ...
Rock crystal
One of the most common minerals of the earth's crust. The crystals are usually found as colorless hexagonal prisms with pyramidal ends.
Rose quartz ...
Rock Crystal
The most versatile stone. It is healing, opens one up to sending and receiving guidance.
Rose Quartz ...
rock crystal
A transparent or translucent semiprecious gemstone. Rock crystal is the purest form of the crystalline mineral, quartz.
Quartz (Rock crystal) Colorless and transparent, rock crystal is the most widely distributed variety of quartz, one of the most common minerals of the Earths crust.
Rock crystal quartz, the most common gem variety of quartz crystal, is, like all quartz, formed from the two most abundant elements in the earth's crust: silicon and oxygen.
Rock Crystal
Clear and color less stone, found in Brazil, Madagascar, the United States and the Alps. Rock crystals weighing many tons have been found many times. Can be confused with colorless gems as well as glass.
Rock Crystal - colorless; low R.I., low dispersion, and lack of color make this a rather "common" appearing faceted gem.
Rock crystal was once believed to be able to foretell the future. When squeezed this stone becomes electrically charged.
Rock crystal (also known as white quartz) is colorless quartz.
Rose quartz is the pink variety of quartz. Rarely transparent, facet grade gems will usually display a beautiful misty appearance.
Rock crystal which is faceted into beads, originally from the Rhine River
Rivière
Choker type necklace that is a continuous line of gemstones usually of graduated or equal size stones ...
Rock crystal s - colourless
Amethyst - Purple
Citrine - Yellow to amber
Morion - Black
Smoky quartz - smokey grey to brown
Rose quartz - translucent pink
Green quartz - green
Chalcedony and Jasper - Variable
Agate ...
Rock Crystal is the transparent and purest form of quartz and a semi-precious stone. Hardness=7.0, S.G.=2.66, R.I.=1.544-1.553.
Actually rock crystals, they occur in the tension gashes
that can be seen in the Devonian sandstone cliffs
at various localities.
Craquelees: Rock crystal stones artificially cracked or crazed by heating.
Crest: Any symbol, figure or device placed above the shield in a coat-of-arms design.
The rock crystal Quartz, is the most common gem variety of quartz crystal, and is formed from the two most abundant elements in the earth's crust: silicon and oxygen.
Rhinestone
Rock crystal which is faceted into beads, originally from the Rhine River
Rivière
Choker type necklace that is a continuous line of gemstones usually of graduated or equal size stones ...
Crystal-Natural: Rock Crystal- A solid whose atoms for a regular structure. Diamonds, quartz and emeralds are forms of natural crystals.
Crystalline: A substance that is either composed of crystals or that resembles crystals in structure.
Arkansas DiamondAn Arkansas diamond is actually a rock crystal (and not a diamond at all). Arkansas StoneArkansas stone is an abrasive used in jewelry making. It is used to smooth metals.
Spring 1968, Opal and rock crystal doublets, p. 282, 2pp.
Fall 1968, Rare cat's-eye opals, p. 342, 2pp.
Winter 1968, Odd leaf-like inclusion in an opal, p. 380, 2pp.
Spring 1969, Opal imitation, p. 21, 1p.
Although citrine may occur naturally, much is produced by heating amethyst under controlled conditions (overheating drives off all color, leaving colorless rock crystal).
Glass imitation of natural or rock crystal (quartz)
Aventurine Earrings
by TheBrassHussy
Aventurine
The gemstone Aventurine is a form of chalcedony and a member of the Quartz family, along with Amethyst, Carnelian and Citrine.
A more decorative style featuring rock crystal quartz rose in popularity during the Victorian era (1837-1901).
Colorless quartz also called "rock crystal" simply lacks interest as a jewelry stone. Even when it is well cut it lacks brilliance. Occasionally quartz will contain some interesting inclusions that can increase its appeal.
Amethyst, aventurine, rock crystal, blue quartz, citrine, hawk's-eye, prasiolite, quartz cat's-eye, smoky quartz, rose quartz, and tiger's-eye fall into this category.
With white sapphire or white topaz, or with rock crystal (quartz), the spectra will be less vivid--they will appear in pairs (due to the double refraction of these minerals), and the red and blue will be near together (i. e.
a diamond brilliant and through that of a quartz brilliant of similar proportions, and in both stones meets the pavilion facets (A in diamond, A1 in quartz) outside the critical angle, and is then totally reflected to B and B1, In the rock crystal it ...
Pope Paulus II bronze, rock crystal ring (photo: Jastrow)
It was also believe that talismanic rings were an antidote for poison, for a lover's betrayal, or to ward off evil such as the envious "evil eye" of a jealous neighbor or peer.
Varieties include rock crystal, amethyst, and rose quartz. Rock crystals and smoky quartz are found in pegmatite at Xuan Le (Thanh Hoa), Ky Son (Nghe An), Thach Khoan (Vinh Phu).
Much paste is actually a composition of pounded rock crystal melted with alkaline salts and colored with metallic oxides. Some paste stones are set with bright foil, a think leaf of metal placed in back of a glass stone to heighten its brilliance.
Rock Crystal, Rose Quartz, and Smokey Quartz are sometimes cut as cabochons or hearts, and may also be tumbled for use in bracelets, necklaces, and costume jewellery. Rock Crystal is also commonly cut into large spheres and carvings.
Twelve percent of the earth's crust is composed of Quartz, or 'rock crystal'. Quartz is considered to be the universal healing stone.
Quartz can be found in a variety of colors, violet (amethyst), golden yellow (citrine), pink or peachish (rose quartz), brown (smoky quartz), green (prasiolite) and colorless (rock crystal).
This is often referred to as Clear Quartz, Rock Crystal or simply Quartz. The crystalline varieties include: amethyst, ametrine, citrine, rose quartz, and smoky quartz.
Baffa diamond is actually rock crystal and not a real diamond.
BAGUETTE
A baguette cut is a stone (usually a diamond) that has been cut into a long, rectangular shape. Baguette means "stick" or "rod" in French.
Clear Quartz: (More commonly called "Rock Crystal"). A colorless transparent mineral consisting of silicon dioxide in crystal form. See Quartz.
Cleavage: Cleavage is the tendency which a stone has to fracture along its crystal structure.
RHINESTONE - Historically, rock crystal quartz in the jewelry trade of the USA. The most common usage is for foilback imitations of diamonds and other gemstones.
ROUGH - Any uncut or unpolished gem material.
Quartz is a crystalline mineral that come in many forms, including amethyst, aventurine, citrin, opal, rock crystal, tiger's eye, rose quartz,and many others. Rutilated quartz and tourmalinated quartz have needle-like inclusions of other minerals.
Austrian crystal - Imitation of natural or rock crystal (quartz). see also crystal
Aventurine - Translucent greenish quartz mineral, internally granular. Often mistaken for jade, another green stone ...
Baffa Diamond
Baffa Diamond is a rock crystal and is used instead of an actual diamond.
Baguette
Baguette is a style of cut for a diamond or stone. Its shape is long and rectangular.
Baffa diamond
Baffa diamond is actually rock crystal and not a real diamond.
ballistic fragment
A ballistic fragment is a piece of rock that is ejected from a volcano with great speed.
Real rhinestones are cut from rock crystal. Today, most rhinestones that are used in jewelry are made of glass which has the look of natural stone.
rhodium
A white, metallic element.
which have the whiteness of a shell or of rock crystal . . . unblemished, smooth, heavy, lustrous,
transparent. . . ." Rangarajan, The Arthashastra, pp. 775-778.
A top-quality colorless, transparent glass resembling natural or rock crystal. Made through an ancient process that involves lead oxide. To be crystal, there must be a minimum of 10% lead. About 200 kinds of crystal are associated with jewelry.
Rock crystal (quartz) has been given local misnomers as a diamond, e.g. Alaska diamond, Bristol diamond, Buxton diamond, Cornish diamond, etc. zircon altered by heat treatment simulates a diamond.
Mexican diamond is a misleading term for rock crystal, and is not a diamond at all.
Millimeters
Millimeters, which is abbreviated MM, is a metric measurement used for pearls, diamonds & gemstones.
Lead added to the melt produces very clear glass resembling rock crystal. The process of making lead crystal was discovered by the English glassmaker George Ravenscroft in 1676. Crystal is colored by adding various metallic oxides to the melt.
Amethyst, Aquamarine, Bloodstone, Jade, Rock Crystal, and Sapphire
March
Aquamarine ...
Firestone is an imitation iridescent rainbow quartz. It is made by heating rock crystal until it crazes; it is then put into dye as it cools.
FLAW ...
Smoky Quartz - Smoky Quartz is a brown transparent quartz in color and is sometimes called smoky topaz. Smoky quartz is formed when rock crystal is irradiated.
 See also: Crystal, Rock, Stone, Quartz, Gemstone
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