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Microcrystalline or cryptocrystalline form of silica
Chalcedony is an aggregate of cryptocrystalline or microcrystalline silica, or in simpler terms, a mass of individual silica crystals that are too small
Chalcedony
Banded variety of chalcedony
banded variety of fibrous chalcedony. Agate stones are characterized by alternating bands of different colored chalcedony and often contain some visible
Agate
Chalcedony variety colored by iron oxide
Jasper, an aggregate of microgranular quartz or cryptocrystalline chalcedony and other mineral phases, is an opaque, impure variety of silica, usually
Jasper
Mineral, quartz variety
quartz, smoky quartz, hematite, pyrite, fluorite, goethite, agate, and chalcedony. The name comes from the Koine Greek αμέθυστος amethystos from α- a-,
Amethyst
"Hist. nat.", 37, liv). The banded agate belongs to the silex family (chalcedony species) and is formed by deposits of siliceous beds in hollows of rocks
Gemstones_in_the_Bible
Green and red chalcedony or jasper
jasper (opaque) or sometimes as chalcedony (translucent). The "classic" bloodstone is translucent to opaque green chalcedony and red jasper that contains
Heliotrope_(bloodstone)
Stones used in jewellery
context of rings usually refers to a ring set with a chalcedony stone. Well-known types of chalcedony are carnelian, agate, and onyx. It is considered a
Aqeeq
Mineral made of silicon and oxygen
commonly grouped together and referred to as chalcedony. However, in the scientific literature, chalcedony is a specific form of silica consisting of fine
Quartz
Variety of chalcedony with fire-like flashes
Fire agate is a variety of chalcedony that displays fire-like iridescent flashes. It is found only in certain areas of central and northern Mexico and
Fire_agate
Black and white variety of agate
English word "nail" is cognate with the Greek word. Onyx is formed of chalcedony bands in alternating colors. It is cryptocrystalline, consisting of fine
Onyx
Phyllosilicate mineral
chrysocolla may be a mixture of the copper hydroxide spertiniite and chalcedony. Chrysocolla typically forms amorphously. The name chrysocolla comes from
Chrysocolla
Red-orange chalcedony variety
interchangeably. Both carnelian and sard are varieties of the silica mineral chalcedony colored by impurities of iron oxide. The color can vary greatly, ranging
Carnelian
Gemstone variety of chalcedony
Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel
Chrysoprase
Species of moth
Elaphria chalcedonia, the chalcedony midget moth, is a moth of the family Noctuidae. It is found in North America, where it has been recorded from the
Elaphria_chalcedonia
Botryoidal form of quartz
Grape agate, also called grape chalcedony or grape amethyst, is a botryoidal variety of quartz that occurs as clusters of small spheres. Specimen- and
Grape_agate
Green variety of chalcedony
Chrome chalcedony is a green variety of the mineral chalcedony, colored by small quantities of chromium. Its name is derived from Mutorashanga, a small
Chrome_chalcedony
Variety of agate with blue and white banding
unexploited. Other regions have also produced blue lace agate or a similar blue chalcedony, including the Lapurr Range in Turkana County, Kenya, Georgia, Malawi
Blue_lace_agate
Hollow formation inside a rock
and manganese can give pink tones. Many geodes contain banded agate or chalcedony, where changes in the chemistry of the solution over time produce the
Geode
Chatoyant gemstone from the quartz family
gemstones. The trade name 'pietersite' is used for a fractured or brecciated chalcedony containing amphibole fibers and promoted as tiger's eye from Namibia and
Tiger's_eye
Type of rock texture
and onyx are examples of cryptocrystalline silica (chalcedony). The quartz crystals in chalcedony are so tiny that they cannot be distinguished with the
Cryptocrystalline
Rock shelter in Oregon, United States
the teeth fragments an orange agate/chalcedony flake tool was collected. In 2017, further orange agate/chalcedony debitage was found along with bison
Rimrock_Draw_Rockshelter
valid species: Adamantine spar (variety of corundum) Agate (variety of chalcedony and quartz) Alabaster (variety of gypsum) Alexandrite (variety of chrysoberyl)
List_of_minerals
Patrol vessel of the United States Navy
use by the Navy on December 15, 1941, and being commissioned as the USS Chalcedony designated PYC-16 on weather duty for the Hawaiian Sea Frontier. In 1947
Velero_III
Type of iron-colored agate
permeated the basalt, forming a gel within the vesicles. Gradually, layers of chalcedony fibers and iron oxides developed from the gel, forming solid nodules of
Lake_Superior_agate
Binghamite (also called silkstone and cuyunite) is a type of chalcedony found only on the Cuyuna Range (near Crosby) in Crow Wing County, Minnesota. The
Binghamite
Achaemenid cylinder seal
and the defeated enemies seal, is an Achaemenid cylinder seal made from chalcedony. It is dated to the late 5th to the early 4th century BCE.[clarification
Zvenigorodsky_seal
Agate variety
a semi-precious gemstone formed from silicon dioxide. It is a form of chalcedony which includes minerals of a green color embedded in the stone, forming
Moss_agate
Geode with trapped water
Enhydros are closely related to fluid inclusions, but are composed of chalcedony. The formation of enhydros is still an ongoing process, with specimens
Enhydro_agate
Variety of opal
is often mistaken for agate or chalcedony,[citation needed] and Parker Cleaveland claimed it was a variety of chalcedony. It has a milky white colour that
Cacholong
(var.) Aventurine (var.) Chalcedony (var.) Agate Iris agate Onyx Sardonyx Bloodstone (Heliotrope) Carnelian Chrome chalcedony Chrysoprase Dendritic agate
List_of_gemstones_by_species
Topics referred to by the same term
Bloodstone may refer to: Heliotrope (mineral) or bloodstone, a form of chalcedony Bloodstone (1988 film), an Indian-American action/comedy film Bloodstone:
Bloodstone
Visible shape of a mineral
cone-shaped. Their cross-sections often reveal a "concentric" pattern calcite, chalcedony, chrysocolla, goethite, malachite, romanechite Stellate Hematite Wavellite
Crystal_habit
Nodule-like rock, that is formed within rhyolitic volcanic ash layers
to over a meter (three feet) across. They usually contain centres of chalcedony which may have been fractured followed by deposition of agate, jasper
Thunderegg
Variety of chalcedony
Pietersite is a commercial term for a variety of the mineral chalcedony. Originating from Namibia and China, where it is mined for use as a decorative
Pietersite
Mayan archaeological artifact
generally referred to as "flints", they were typically fashioned from chert, chalcedony and obsidian. Eccentric flints were first categorised by western archaeologists
Eccentric_flint
State rock of Missouri
consists essentially of silica (quartz - SiO2) with varying amounts of chalcedony. It has won distinction as a particular form or variety of chert because
Mozarkite
Crochet technique
mercerized cotton, faceted chalcedony, and freshwater pearls. Two different attachment methods were used: the chalcedony beads were strung before construction
Bead_crochet
made from cryptocrystalline materials such as chert, flint, radiolarite, chalcedony, obsidian, basalt, and quartzite via a splitting process known as lithic
Stone_tool
German goldsmith (1664–1731)
was owing until 1713. 1704 Dianabad (The "Bath of Diana"), in which a chalcedony bowl in a filigree is supported between the horns of a stag's head. 1722
Johann_Melchior_Dinglinger
Topics referred to by the same term
onyx in Wiktionary, the free dictionary. Onyx is a banded variety of chalcedony (quartz). Onyx may also refer to: Onyx, California, a census-designated
Onyx_(disambiguation)
Fossilized remains of plants
have been replicated with minerals (mostly silica in the form of opal, chalcedony, or quartz). In some instances, the original structure of the stem tissue
Petrified_wood
T59281A11896704.en. Retrieved 18 November 2021. Gordon T. Austin (1995), Chalcedony, in An Overview of Production of Specific U.S. Gemstones, U.S. Bureau
List of Tennessee state symbols
List_of_Tennessee_state_symbols
Apostle of Jesus
Slab of chalcedony which covered the Apostle's relics at Chios, now in the Basilica of Ortona
Thomas_the_Apostle
Cryptocrystalline form of the mineral quartz
variety of chalcedony Chalcedony – Microcrystalline or cryptocrystalline form of silica Eolith – Knapped flint nodule Jasper – Chalcedony variety colored
Flint
Arsenate mineral
hydrothermal environments and was associated with veins of quartz and chalcedony in the type locality. It has also been reported from Italy, Morocco, Chile
Roselite
Variety of fortification banded agate from South Dakota and Nebraska
types of agate, are composed of concentric layers of cryptocrystalline chalcedony colorized by different trace minerals. However, fortification banding
Fairburn_agate
Quartz variety
quartz, and it should not be confused with prase, chrysoprase, chrome chalcedony, or quartz colored by inclusions of chlorite or epidote. Natural prasiolite
Prasiolite
Archaeological site in California, United States
probably related to outcrops of local high-quality siliceous rock (primarily chalcedony in freshwater limestone). The stone tools of these industries, along with
Calico_Early_Man_Site
Calcium carbonate based concretion of sediment
used to describe some forms of quartzite, bauxite, kaolinite, laterite, chalcedony, opal, and soda niter. A similar material, composed of calcium sulfate
Caliche
Reddish-brown color
Carnelian is a color named after the carnelian variety of the mineral chalcedony. This semi-precious gemstone is noted for its rich shade of reddish-brown
Carnelian_(color)
Index of articles associated with the same name
aragonite, goethite, rutile, or a zeolite. Any other variety of quartz or chalcedony with acicular inclusions of another mineral. Rutile sagenite from Brazil
Sagenite
Texture of small enclosed cavities found in some volcanic rocks
filled with secondary minerals, such as zeolites, calcite, quartz, or chalcedony. Individual cavity fillings are termed amygdules (American usage) or amygdales
Vesicular_texture
Glass colored with uranium oxide
which they named chrysoprase from its similarity to the green form of chalcedony of the same name. Fluorescent uranium Depression glass A uranium glass
Uranium_glass
Ancient Chinese name of an unknown mineral
variously, as blue-green malachite, blue coral, white coral, whitish chalcedony, red spinel, and red jade. It is also the name of a mythological langgan
Langgan
Town in Western Australia
is particularly rich in minerals such as gold, agate, asbestos, beryl, chalcedony, jade, jasper, tiger's eye and ores of antimony, copper, manganese and
Nullagine,_Western_Australia
Poem by J.R.R Tolkien
His arrows shorn of ebony, Of silver was his habergeon, His scabbard of chalcedony; His sword of steel was valiant, Of adamant his helmet tall, An eagle-plume
Errantry
Morphology of grains indicates that the quartz is not a product of opal and chalcedony conversion, but it precipitated directly from the seawater. The crystallinity
Striped_flint
Sword of Roland, Paladin of Charlemagne
this as "sard or brown agate" indicating there is a range of types of chalcedony this word could be referring to. Moncrieff renders as "sardonyx terrace"
Durendal
Italian artist
Barovier should be recognized for originally developing a glass paste called Chalcedony.[citation needed] At the request of Filaret, architect of the Dukes of
Angelo_Barovier
Russian artist
Sumin chalcedony mouse
Avenir_Sumin
German fashion designer (1933–2019)
Suzanne Belperron's pins and brooches. He used the color of one of her blue chalcedony rings as the starting point for the Chanel spring/summer 2012 collection
Karl_Lagerfeld
Geologic formation in Alaska, United States
range: Cambrian Type Formation Lithology Primary Limestone Other Chert, chalcedony Location Region Alaska Country United States Type section Named for Hillard
Hillard_Limestone
Hard, fine-grained sedimentary rock composed of cryptocrystalline silica
fraction of a micron to 20 microns, but most typically 8 to 10 microns. Chalcedony is a microfibrous variety of quartz, consisting of radiating bundles of
Chert
Felsic volcanic rock
various colors (red, pink, gray, etc.) composed by crystals of quartz, chalcedony, hematite, fluorite and various colored oxides or other minerals. Lithophysae
Lithophysa
Type of stone bead
as well. Imitation dzi are created from materials other than agate or chalcedony. They can be made of glass, resin, lampwork, wood, bone, plastic, metal
Dzi_bead
British jewellery designer (1889–1968)
characterised by the use of semi-precious and precious gems, such as chalcedony, chrysoprase, moonstone, amethyst, agate, quartz and opals, often cabochon
Sibyl_Dunlop
Jewish ritual object worn by the High Priest
this is most likely to be the color referred to by yošfe. Since a blue chalcedony has been found bearing an Elamite inscription calling it yašpu, clearly
Priestly_breastplate
Geological formation in the United States
consists of a lower grey-to-purple claystone with abundant fist-sized chalcedony and barite concretions; the unit is highly bentonitic and contains occasional
Cloverly_Formation
Town in Bithynia
Cartagena which were derived from the same Phoenician name. The mineral chalcedony is named after the city. The original Ancient Greek name Kalkhedon, found
Chalcedon
Small, nonfunctional work of art
Byzantine agate "Rubens vase"; the Roman glass "Portland Vase", and onyx and chalcedony cameo carvings, whilst the pre–World War I production of objets d'art
Objet_d'art
Arm of the Indian Ocean between Asia and Africa
calcite, protodolomite,[citation needed] dolomite, quartz,[citation needed] chalcedony Evaporite minerals Magnesite, gypsum, anhydrite, halite, polyhalite Brine
Red_Sea
American businessman
use by the Navy on December 15, 1941, and being commissioned as the USS Chalcedony. On a trip to the Galápagos Captain Hancock would attempt to identify
George_Allan_Hancock
River in Sicily: provinces of Ragusa, Caltanissetta and Catania
the Elder makes the same connection in his Naturalis Historia Agate and chalcedony can still be found here. During the period of Arab rule it became known
Dirillo
Fossil classification
midline. The fossils are pyritized; some internal chambers are filled with chalcedony, so that they are preserved along with proposed "basal rhizines". Controversially
Rutgersella
Short story by Elizabeth Bear
podcast LeVar Burton Reads. The story follows a sentient war machine, Chalcedony, which is the lone survivor of a highly apocalyptic war that has reduced
Tideline_(short_story)
Red mercury(II) sulfide mineral, HgS
with native mercury, stibnite, realgar, pyrite, marcasite, opal, quartz, chalcedony, dolomite, calcite, and barite. Cinnabar is found in essentially all mineral
Cinnabar
Archeological site in Uttar Pradesh, India
settlement with hearths, hand-made cord-impressed pottery, and microliths, chalcedony are found here during excavation. Remains of pottery and rice have been
Chopani_Mando
of the gemstones carved in the West are varieties of quartz, including chalcedony, agate, amethyst, sard, onyx, carnelian, heliotrope, jasper and quartz
Hardstone
Crystalline chemical element or compound formed by geologic processes
seen in kunzite or stibnite; botryoidal (like a bunch of grapes) seen in chalcedony; fibrous, which has fibre-like crystals as seen in wollastonite; tabular
Mineral
Pre-historic burial site in Bulgaria
in the graves from the Varna Chalcolithic site are numerous beads of a chalcedony (carnelian) and agate composition. Three main morphological types of beads
Varna_Necropolis
King of Babylon
reign. Nazimaruttaš kudurru stone Maruts AO 7704, an irregular block of chalcedony with a nine-line Sumerian inscription, now held in the Louvre, transcribed:
Nazi-Maruttash
Cubic form of mercury sulfide
native mercury, wurtzite, stibnite, marcasite, realgar, calcite, barite, chalcedony and hydrocarbons. It was first described in 1870 for an occurrence in
Metacinnabar
Eocene species of gastropod
intermittent volcanic eruptions. Fossil shells of E. tenera are hosted in chalcedony-rich sedimentary rock. This rock was originally incorrectly called Turritella
Elimia_tenera
2025 single by Burna Boy
Weakness. Damini "Burna Boy" Ogulu – vocals, songwriting Students of Chalcedony School – choir Andrew "Dre Skull" Hershey – production, songwriting William
Love_(Burna_Boy_song)
Topics referred to by the same term
(usually spelled "carnelian") is a reddish-brown variety of the mineral chalcedony. Cornelian may also refer to: Cornelian automobile, a 1914 racing vehicle
Cornelian_(disambiguation)
District in Skagafjörður, Iceland
that is now a tourist destination and Glerhallavík cove, an area rich in chalcedony. According to Grettis saga, there was a church at Reykir, but no other
Reykir
returned Aug 1944 HMT Ceylonite Apr 1940 Minesweeper, returned 1946 HMT Chalcedony Aug 1939 Auxiliary patrol, Minesweeper, sold 1945 HMT Charde Nov 1939
List of requisitioned trawlers of the Royal Navy (WWII)
List_of_requisitioned_trawlers_of_the_Royal_Navy_(WWII)
Roman emperor from 361 to 363, Neoplatonic philosopher
some of which are by Julian relating to Christianity. A 4th century chalcedony portrait of Julian, Saint Petersburg, The State Hermitage Museum. Julian's
Julian_(emperor)
Rock consolidated from volcanic ash
are greatly changed by silicification (which has filled them with opal, chalcedony, and quartz) and by devitrification. The frequent presence of rounded
Tuff
Topics referred to by the same term
Sard is a dark reddish-brown variety of the mineral chalcedony, similar to carnelian. Sard may also refer to: Sard's lemma, a result in mathematical analysis
Sard_(disambiguation)
Object believed to offer protection or grace on the wearer
gods has been suggested. For example, Jupiter is represented on milky chalcedony, Sol on heliotrope, Mars on red jasper, Ceres on green jasper, and Bacchus
Amulet
35% 0 82 57 H170L30C35 Permanent Green 170° 30% 40% 0 84 55 H170L30C40 Chalcedony Green 170° 40% 10% 75 96 87 H170L40C10 Palace Green 170° 40% 15% 66 98
List_of_RAL_colours
Oxide of silicon
(typically, 2 × 10−4 M for quartz up to 10−3 M for cryptocrystalline chalcedony), strong bases react with glass and easily dissolve it. Therefore, strong
Silicon_dioxide
Series of conflicts in the 5th century BC
Cylinder seal, chalcedony; depicts a 'Median' (Persian) warrior, on the left, facing a Greek warrior, with hoplite equipment, stabbing him with a lance;
Greco-Persian_Wars
Canadian geologist and mining engineer
During one of his collecting trips he noticed a bladed mineral enclosed in chalcedony on the edge of Kamloops Lake in the Kamloops Mining Division, British
Walter_Frederick_Ferrier
Ruins in Lisbon, Portugal
the nearby Roman aqueduct, as well as the agricultural activities and Chalcedony mining occurring in the district. With vestiges of human occupation dating
Roman villa of Quinta da Bolacha
Roman_villa_of_Quinta_da_Bolacha
Species of gastropod
featuring a dextral, elongately conic shape. Its coloration is a pale chalcedony yellow that fades toward the apex and becomes more opaque—nearly a straw
Auriculella_straminea
1899 Fabergé egg
in the form of a vase of pink quartz, in which there is a bouquet of chalcedony lilies, the stems and leaves of lilies are made of gold, and the nuts
Rose_Quartz_(Fabergé_egg)
Carbon steel for making sparks
take a sharp edge can be used, such as chert, quartz, agate, jasper or chalcedony. The sharp edge of the flint is used to violently strike the fire steel
Fire_striker
Hydrocarbon mineral
partials on top of the quartz crystals. Associated minerals include quartz, chalcedony, pyrite, pyrrhotite, sphalerite, galena, chalcopyrite and calcite. Evenkite
Evenkite
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