Anything resembling crystal, as clear water, etc.
Consisting of, or like, crystal; clear; transparent; lucid; pellucid; crystalline.
Glass with at least 30% lead, in order to produce a highly refractive quality.
The protective clear cover that fits over the watch dial. It can be made of mineral, synthetic sapphire, plastic, or acrylic material. The sapphire crystal is the most durable, as only a diamond can scratch its surface.
Crystal is high-quality glass containing at least 10% lead oxide. Lead added to the melt produces very clear glass resembling rock crystal.
A highly transparent and brilliant type of glass used as a replacement for more expensive gemstones in jewelry.
Transparent cover fit onto case top (bezel) to protect watch dial. Usually made of hard plastic to resist breakage.
Colorless, clear. (Lead crystal is highly refractive transparent glass.)
The protective cover over the watch face. Could be acrylic crystal, mineral crystal or sapphire crystal. Acrylic crystal is plastic and scratches easily. Mineral crystal is comprised of several elements, heat-treated for hardness and extra durability. Sapphire crystal is the most durable and most expensive.
Glass with a lead composition of at least 30%. Lead is added for its refractive properties.
Name borrowed from that used to describe transparent quartz; denotes a clear and heavy color-free glass with a high lead content.
A type of inclusion. A crystal is a mineral deposit trapped inside the diamond.
The glass or acrylic part. Originally many of these were glass when scratched they were unrepairable. Later watches had acrylic [plastic] which could be buffed out. Most replacement crystals are acrylic.
Usually a semi-precious gemstone thought to have specific qualities. For example, clear quartz can be used to focus energy, Black Onyx can be used for grounding, etc.
The transparent protective covering that fits tightly over the face of the watch. It is held in place by the bezel. May be made from plastic, glass or synthetic sapphire.
The glass piece (or clear plastic) that protects the dial and hands. The probability of breaking the crystal is directly proportional to the difficulty and expense of finding a replacement.
One of the "four Cs" of gem connoisseurship, coined by author, referring to the transparency and diaphaneity of the gem. See also water and transparency.
In wireless microphones and digital devices, a frequency stabilizing device consisting of a small quartz crystal in a holder. The natural vibrational frequency of the quartz can be made highly stable by external circuitry and is used to establish the operating frequency of wireless transmitters, receivers and other RF and digital equipment.
usually refers to quartz crystal, used as a precision timing element in many circuits; may refer to the term piezoelectric
the piezoelectric element(s) in a stack which expands and contracts in an alternating (charged) electrical field, thus inducing vibration.nbsp; In low-powered ultrasonic cleaning tanks, crystals are sometimes bonded directly to the diaphragm (tank bottom or side wall).
colorless glass made of almost pure silica
a protective cover that protects the face of a watch
a mineral that grows naturally in cavities of rock and is mined and used for many purposes
a mineral that is nearly transparent and colorless or has a slight color
a natural piezoelectric oscillator
a transparent sheet that covers the face of any timepiece
a transparent windows decoration
The thin plate of glass or transparent synthetic material, for protecting the innerworkings of watches.
The transparent cover over the watch face. It is usually made of glass, acrylic crystal, mineral crystal, or synthetic sapphire. The latter is the most expensive and durable, approximately three times harder than mineral crystal and 20 times harder than acrylic crystal. Sapphire crystal is highly resistant to scratching or shattering.
The clear cover over the watch face, it may be made of mineral crystal, acrylic, Plexiglass, or sapphire (the last being the hardest and best material for scratch resistance). Styles of crystals include domed and bubble types. Rolex made the 2.5x magnifying crystal bubble over the date window of their Date Just and Day Date models a classic.
The clear covering which protects the watch face made of glass, plastic or synthetic sapphire. Sapphire crystals are known to be the hardest and most scratch resistant.
The crystal is the clear casing over the dial used to display the time, while protecting the watch. Crystals are made from glass, mineral and synthetic crystal.
a clear, colorless glass cut or faceted to resemble Rock Crystal; this term is used loosely to describe all fine clear glass.
The face of a watch. (see mineral crystal, sapphire crystal).
A generic term generally used today when referring to thin, fine quality glass stemware produced since the early 20th century. Derived from the Italian term cristallo referring to delicate, clear Venetian blown glass produced since the 14th century.
The cover on a watch face. It is usually made of glass crystal, plastic, or synthetic sapphire.
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.
The transparent cover over a watch dial - usually made of glass, crystal, or plastic.
The glass on a watch can be made of Plexi Glass (A synthetic Crystal) or Sapphire Crystal depending upon its make and age
A type of quartz that is transparent and nearly colorless or only slightly tinged.
A popular term for colorless lead glass which has a high refractive index and consequently is particularly brilliant. Today, the word is often used to describe any fine glass tableware.
transparent protective covering fitted tightly over the face of the watch. The crystal is held in place by the bezel, and may be made from plastic, glass, or synthetic sapphire (the hardest and most expensive crystal available). Since the crystal is exposed to all sorts of shocks and blows, it should be as hard as possible. Softer materials can scratch and break easily, which will make the watch less attractive and possibly unreadable; or if shattered, can damage the watch beyond repair.
The tranparent cover on the watch face made of glass crystal, synthetic sapphire or plastic.
In the past, glass of high degree of brilliance achieved by adding lead, or referring to cut glass. Today, the term "crystal" can refer to the molten colorless glass which lies in the ceramic pot inside the furnace. We also speak of "eco-kristall". A brilliant glass which does not contain lead. Crystal, full and lead - Full lead crystal or crystal superieur contains 30% lead. Half lead crystal contain 24% lead.
glass made with lead, which produces a high clarity
A molecular structure that is found in nature and man made beads that usually is associated with a high quality and clarity. Like Swarovski Crystal and quartz crystal.
Glass dial cover (made of glass, plastic, synthetic sapphire, or quartz crystal) fitted into bezel.
The transparent cover on a watch face made of glass crystal, synthetic sapphire or plastic. Better watches often have a sapphire crystal which is highly resistant to scratching or shattering.
A mineral or substance that solidifies in a well-defined shape.
The clear lens that covers the "face" of the watch, often made of plastic, glass or mineral glass (a harder glass composite that is resistant to scratching and breaking).
A generic term used in place of the more complete expression "piezoelectric quartz crystal unit."
a piece of quartz mineral that will resonate at a particular frequency and used as a reference in transceivers
quartz and any other transparent mineral. Crystals hold a place of high regard with new age practitioners for either healing (the prime use) or divination.
the glass front of a watch. Often made of a mineral glass or acrylic, but on many finer watches, it is a synthetic sapphire which is very hard to scratch.
The crystal is the clear cover over the dial. Can be referred to as the glass. Various materials have been used over the years including acrylic, mineral (glass) and sapphire.
The transparent "glass" cover which protects the dial. For their long-lasting, scratch-resistant properties, Movado uses only "mineral" and synthetic "sapphire" crystals.
A regular three-dimensional form of a mineral with flat surfaces (faces) and specific angles between the faces. The crystal form is an outward expression of the molecular structure of the mineral.
A transparent quartz material that contains a uniform arrangement of molecules. Used to make precise electronic oscillators.
The "glass". A mineral or synthetic covering over the dial of the watch.
The covering that protects the dial, usually made of mineral glass, synthetic sapphire or plastic.
The glass or transparent cover which protects the watch dial.
Transparent/translucent opal.
Often a clear or transparent material that has an internal arrangement of interesting and varied patterns.
shape natural regular shape Quartz, Calcite
Also known as the lens, the crystal is often made up of plastic, glass, or mineral glass (a harder glass composite that is resistant to scratching and breaking)
A top-quality colorless, transparent glass resembling natural or rock crystal. About 200 kinds associated with jewelry. Made through an ancient process that involves lead oxide. See also AUSTRIAN CRYSTAL. Crystals – 1) ACRYLIC (Plexiglas or plastic) Very strong but easily scratched. 2) MINERAL: Processed as a special type of glass, these are far harder and more scratch resistant. 3) SAPPHIRE: This is the strongest and most scratch resistant. It is  also almost non-reflective. 4) SAPPHIRE COATED/HARDENED – K1 – Mineral crystal with sapphire     coating.
n. a mineral, especially a transparent form of quartz, having a crystalline structure, often characterized by external planar faces.
The heart of modern timekeeping devices, this is the quartz oscillator that controls the accuracy of a timer. High-quality timing devices contain Temperature-Compensated Quartz Crystals ( TCXO) that provide highly accurate timing in great temperature extremes. Click
The "Crystal" is the glass that you look through in order to see the "Dial" (face). The purpose of the crystal is to protect the dial. The Crystal can be made of glass, plastic, or a scratch resistant synthetic material called "Sapphire Crystal".
Glass made with lead to provide a high refractive quality.
(13th century, from the Greek krystallos, meaning ice) A clear, transparent form of quartz which has not been coloured by the presence of other minerals. The "purest" of all quartzes. Clear Quartz- One of earth's most common minerals is also known as rock crystal or quartz crystal.
The glass cover of a watch face. Crystals can be made of glass, plexiglass, or in the best quality, a mineral glass like sapphire.
the clear glass cover on top of the dial or the case back of the watch, made of natural glass crystals or synthetic sapphires.
The clean cover over the watch face. Three types of crystals are commonly found in watches. Acrylic crystal, a plastic, is inexpensive and shallow scratches can be buffed out. Mineral crystal is comprised of several elements that are heat treated to create unusual hardness that aids in resisting scratches. Sapphire crystal is the most expensive and durable, approximately three times harder than mineral crystals and 20 times harder than acrylic crystals. A none reflective coating on some sport styles prevents glare.
The cover over the watch dial is called the crystal. There are three types of crystals commonly used in watches: acrylic crystal is an inexpensive plastic that allows shallow scratches to be buffed out. Mineral crystal is composed of several elements that are heat-treated to create an unusual hardness that aids in resisting scratches. Sapphire crystal is the most expensive and durable, approximately three times harder than mineral crystals and 20 times harder than acrylic crystals. A non-reflective coating on some sport styles prevents glare.
The clear cover over the watch face or dial. Crystals can be made of mineral, synthetic sapphire, plastic, or acrylic material. The sapphire crystal is the most durable.
1. Any glass that is clear; 2. glass that contains at least 4% lead in its formulation. Lead crystal is brighter than more common soda-lime glasses due to its higher index of refraction.
A top-quality colorless, transparent glass resembling natural or rock crystal. About 200 kinds of crystal are associated with jewelry. Made through an ancient process that involves lead oxide. To be crystal, there must be a minimum of 10% lead.
A natural substance, such as quartz or tourmaline, that is capable of producing a voltage when under physical stress or of producing physical movement when a voltage is applied. Manufacturers
A top-quality colourless, 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. See also Austrian Crystal
A natural substance, such as quartz or tourmaline, that is used to control the frequency of radio transmitters.