Ametrine

Ametrine Emerald Cut

Ametrine containing amethyst and citrine, from Bolivia

Naturally occurring variety of quartz.

- Ametrine

6 related topics

Amethyst

Violet variety of quartz.

Amethyst cluster from Magaliesburg, South Africa.

Main amethyst-producing countries

Faceted amethyst

Emerald cut amethyst

Amethyst crystals from Mexico

An amethyst geode that formed when large crystals grew in open spaces inside the rock.

Amethyst from Brazil in the Mineral museum in India

Roman intaglio engraved gem of Caracalla in amethyst, once in the Treasury of Sainte-Chapelle.

Uninscribed amethyst scarab at the center of a string of amethyst ball beads. Middle Kingdom. From Egypt. The Petrie Museum of Egyptian Archaeology, London

When partially heated, amethyst can result in ametrine.

Quartz

Hard, crystalline mineral composed of silica .

Quartz crystal cluster from Tibet

Quartz crystal demonstrating transparency

A synthetic quartz crystal grown by the hydrothermal method, about 19 cm long and weighing about 127 grams

Granite rock in the cliff of Gros la Tête on Aride Island, Seychelles. The thin (1–3 cm wide) brighter layers are quartz veins, formed during the late stages of crystallization of granitic magmas. They are sometimes called "hydrothermal veins".

Crystal structure of α-quartz (red balls are oxygen, grey are silicon)

Herkimer diamond

Rutilated quartz

Sceptred quartz

Rock crystal jug with cut festoon decoration by Milan workshop from the second half of the 16th century, National Museum in Warsaw. The city of Milan, apart from Prague and Florence, was the main Renaissance centre for crystal cutting.<ref>{{cite book |title=The International Antiques Yearbook |year=1972 |page=78 |publisher=Studio Vista Limited |url=https://books.google.com/books?id=BVcvAQAAIAAJ|quote=Apart from Prague and Florence, the main Renaissance centre for crystal cutting was Milan.}}</ref>

Synthetic quartz crystals produced in the autoclave shown in Western Electric's pilot hydrothermal quartz plant in 1959

Fatimid ewer in carved rock crystal (clear quartz) with gold lid, c. 1000.

It is then referred to as ametrine.

Gemstone

Piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments.

Group of precious and semiprecious stones—both uncut and faceted—including (clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster.

A collection of gemstone pebbles made by tumbling the rough stones, except the ruby and tourmaline, with abrasive grit inside a rotating barrel. The largest pebble here is 40 mm long.

Spanish emerald and gold pendant at Victoria and Albert Museum

Enamelled gold, amethyst, and pearl pendant, about 1880, Pasquale Novissimo (1844–1914), V&A Museum number M.36-1928

Raw sapphire stones stored in a rural commercial cutting plant in Thailand.

A diamond cutter in Amsterdam in the Netherlands in 2012

Nearly 300 variations of diamond color exhibited at the Aurora display at the Natural History Museum in London.

A variety of semiprecious stones

Most citrine is made by heating amethyst, and partial heating with a strong gradient results in "ametrine" – a stone partly amethyst and partly citrine.

List of minerals

List of minerals for which there are articles on Wikipedia.

Amethyst crystals – a purple quartz

Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite

Aquamarine variety of beryl with tourmaline on orthoclase

Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico

Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals

Austinite from the Ojuela Mine, Mapimí, Durango, Mexico

Ametrine containing amethyst and citrine, from Bolivia

Baryte (included by malachite) on malachite, from Shangulowé Mine, Kambove, Central area, Katanga, Democratic Republic of Congo

Spiky calcite scalenohedra with a coating of whitish benstonite on a layer of teal-colored fluorite

Thin tabular biotite cluster

Brookite from Kharan, Balochistan, Pakistan

Radiating spray of colorless wheatsheaf calcite crystals on matrix, from Iraí, Rio Grande do Sul, Brazil

Rhombohedrons of calcite that appear almost as books of petals, piled up 3-dimensionally on the matrix, from Eastern Europe

Sky blue, prismatic crystals of celestine from Majunga, Madagascar

Pocket cavity of small chrysocolla stalactites from Ray Mine, Scott Mountain area, Mineral Creek District, Arizona, USA

Cinnabar on dolomite

The slightly misshapen octahedral shape of this rough diamond crystal in matrix is typical of the mineral

Emerald on quartz, from Carnaiba Mine, Pindobaçu, Campo Formoso ultramafic complex, Bahia, Brazil

Translucent fluorapophyllit-(K) crystal and stilbite, from Jalgaon District, Maharashtra, India

Deep green isolated fluorite crystal showing cubic and octahedral faces, set upon a micaceous matrix

Gold vein stockwork in limonite, from Gold Flake Vein, Farncomb Hill, Breckenridge Mining District, Summit County, Colorado, USA

Brazilian trigonal hematite crystals

Hübnerite and quartz

Inyoite from Monte Azul deposit, Sijes, Salta, Argentina

Benitoite (blue), joaquinite-(Ce) (brown) and neptunite (dark red) on natrolite (white), from Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA

Kainosite-(Y) from the Amphibolite quarry, Haslach, Black Forest, Baden-Württemberg, Germany

Kröhnkite from Cuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta Region, Chile

Langite from Elsass, France

Legrandite on limonite

Liddicoatite on quartz and feldspar

Magnetite from Speen Ghar, Nangarhar Province, Afghanistan

Manganite from Ilfeld, Thuringia, Germany

Mesolite at the Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA

Mimetite on limonite matrix

Needles of natrolite on deep pink inesite

Neptunite from California, USA

Boulder opal, Carisbrooke Station near Winton, Queensland, Australia

Paravauxite and sigloite crystals associated with micro crystallized iron-stained wavellite needles on matrix

Pectolite from Paterson, Passaic County, New Jersey, USA

Phosphophyllite from Cerro de Potosí, Potosí Department, Bolivia

Pyrrhotite on quartz

Crystals of cherry red ruby in matrix

Acicular colorless scolecite crystals in a group with pale green apophyllite and very light pink stilbite

Gypsum (selenite variety): Santa Eulalia District, Chihuahua, Mexico

Serandite clusters from Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada

Botryoidal balls of shattuckite, from Otjikotu, Kaokoveld, Kunene, Namibia

Ball of stepped stannite crystals flanked by splaying GEM quartzes and golden chalcopyrite at its upper edge, from Yaogangxian Mine, Yizhang County, Chenzhou Prefecture, Hunan Province, China

Crystal of titanite with adularia and minor clinochlore on matrix

Fluorite crystal sitting beside a glassy, dark green tourmaline crystal, which itself sits atop a green tourmaline of a lighter color. All sit on a bed of sparkly, bladed stark white albite

Crystals of turquoise, from Copper Cities Mine, Globe-Miami District, Arizona, USA

Crystals of tourmaline (uvite variety) on quartz, from Pomba pit, Serra das Éguas, Brumado, Bahia, Brazil

Vanadinite from the Mibladen Mining District, Morocco

Deep green balls of wavellite in exposed pocket, from Mauldin Mountain Quarries, Montgomery County, Arkansas, USA

Radial fibrous inesite and xonotlite from Northern Cape Province, South Africa

Zeolite with heulandite on quartz

Zircon from Gilgit, Pakistan

Ametrine (variety of quartz)

List of portmanteaus

Selection of portmanteau words.

The original Gerrymander pictured in an 1812 cartoon. The word is a portmanteau of Massachusetts Governor Elbridge Gerry's name with salamander.

ametrine, a gemstone composed of amethyst and citrine

Huáscar Aparicio

Bolivian folk singer.

In 2004, Huáscar participated in a competition based on the exhibition of precious stones known as bolivianitas, which inspired him to compose the song entitled La bolivianita.