Alexandrite - Russia: Alexandrite is a rare variety of chrysoberyl that exhibits a color change from blue-green in daylight to purplish-red under incandescent light.
Benitoite - United States: Benitoite is a rare blue barium titanium silicate mineral that is found in hydrothermally altered serpentinite.
Chrysoprase - Australia: Chrysoprase is a rare apple-green variety of chalcedony that is valued as a gemstone.
Crocoite - Australia: Crocoite is a rare orange-red mineral composed of lead, chromium, and oxygen.
Datolite - Russia: Datolite is a rare colorless, white, or yellow mineral that is often found in volcanic rocks.
Demantoid - Russia: Demantoid is a rare green variety of andradite garnet that is valued as a gemstone.
Diaspore - Turkey: Diaspore is a rare aluminum oxide mineral that is best known for its color-changing properties.
Euclase - Brazil: Euclase is a rare blue or colorless mineral that is primarily composed of beryllium, aluminum, and hydroxide.
Fluorite - China: Fluorite is a widely distributed mineral that exhibits a wide range of colors, including green, purple, blue, yellow, and pink.
Grandidierite - Madagascar: Grandidierite is a rare blue-green mineral that is often found in pegmatites and is composed of aluminum, boron, and magnesium.
Hiddenite - United States: Hiddenite is a rare green variety of spodumene that is valued as a gemstone.
Jadeite - Myanmar: Jadeite is a rare variety of jade that is often a bright green color, but can also be found in lavender, pink, and white.
Jeremejevite - Namibia: Jeremejevite is a rare colorless, blue, or pale yellow mineral composed of aluminum, boron, and oxygen.
Kunzite - Afghanistan: Kunzite is a rare pink to lilac-colored variety of spodumene that is valued as a gemstone.
Larimar - Dominican Republic: Larimar is a rare blue variety of pectolite that is found only in the Dominican Republic.
Liddicoatite - Madagascar: Liddicoatite is a rare pink, yellow, or green variety of tourmaline that is found in Madagascar.
Moldavite - Czech Republic: Moldavite is a rare green glass-like material that is believed to have been formed by the impact of a meteorite.
Musgravite - Australia: Musgravite is a rare colorless, greenish-gray or purple mineral composed of beryllium, magnesium, and aluminum.
Painite - Myanmar: Painite is an orange-red or brownish-red mineral consisting of calcium, zirconium, boron, and aluminum silicate.
Paraiba tourmaline - Brazil: Paraiba tourmaline is a rare copper-bearing gemstone that is found in the Paraíba state of Brazil.
Poudretteite - Madagascar: Poudretteite is a rare pink mineral composed of potassium, sodium, lithium, and beryllium.
Rhodochrosite - Argentina: Rhodochrosite is arare pink, red, or orange mineral that is primarily composed of manganese carbonate.
Rhodonite - Russia: Rhodonite is a rare pink or red mineral that is often used as a gemstone or ornamental stone.
Sapphirine - Madagascar: Sapphirine is a rare blue or greenish-blue mineral that is composed of magnesium, aluminum, and silicon.
Serendibite - Sri Lanka: Serendibite is a rare blue to gray mineral that is composed of calcium, magnesium, aluminum, and silicon.
Sinhalite - Sri Lanka: Sinhalite is a rare yellow or brown mineral composed of magnesium, aluminum, and silicon.
Taaffeite - Tanzania: Taaffeite is a rare purple or mauve mineral that is composed of beryllium, magnesium, and aluminum.
Tanzanite - Tanzania: Tanzanite is a rare blue-violet variety of zoisite that is found only in Tanzania.
Tetrahedrite - Bolivia: Tetrahedrite is a rare silver, gray, or black mineral that is composed of copper, antimony, and sulfur.
Topazolite - Russia: Topazolite is a rare green or yellow variety of garnet that is composed of calcium, iron, aluminum, and silicon.
Uvarovite - Russia: Uvarovite is a rare green mineral that is a member of the garnet group and is primarily composed of calcium, chromium, and oxygen.
Variscite - United States: Variscite is a rare green or blue mineral that is composed of aluminum, phosphorus, and oxygen.
Vivianite - Bolivia: Vivianite is a rare blue or green mineral that is composed of iron, phosphate, and water.
Wavellite - United States: Wavellite is a rare green, yellow, or brown mineral that is primarily composed of aluminum, phosphorus, and oxygen.
Willemite - United States: Willemite is a rare green or brown mineral that is primarily composed of zinc, silicon, and oxygen.
Xonotlite - Mexico: Xonotlite is a rare white or gray mineral that is composed of calcium, silicon, and oxygen.
Zektzerite - Russia: Zektzerite is a rare pink, brown, or green mineral composed of sodium, lithium, and beryllium.
Zircon - Australia: Zircon is a widely distributed mineral that is primarily composed of zirconium, silicon, and oxygen.
Zoïsite - Tanzania: Zoïsite is a mineral that exhibits a wide range of colors, including blue, purple, pink, yellow, and green.
Zunyite - United States: Zunyite is a rare brown or pink mineral that is composed of aluminum, silicon, and oxygen.
Blue john - England: Blue john is a rare form of fluorite that is found only in the Castleton area of Derbyshire in England.
Lavendulan - Germany: Lavendulan is a rare blue mineral that is primarily composed of copper, arsenic, and oxygen.
Beryllonite - Maine, United States: Beryllonite is a rare white or colorless mineral that is primarily composed of beryllium, sodium, and phosphorus.
Staurolite - Switzerland: Staurolite is a rare brown or black mineral that is often found in metamorphic rocks and is composed of aluminum, iron, and silicon.
Brookite - United States: Brookite is a rare brown, black, or red mineral that is composed of titanium and oxygen.
Cuprite - Congo: Cuprite is a rare red mineral that is primarily composed of copper and oxygen.
Sillimanite - India: Sillimanite is a rare brown, gray, or green mineral that is composed of aluminum, silicon, and oxygen.
Creedite - Mexico: Creedite is a rare purple or white mineral that is composed of calcium, aluminum, and oxygen.
Eudialyte - Greenland: Eudialyte is a rare pink, red, or brown mineral that is composed of sodium, calcium, cerium, and other elements.
Schorl - Brazil: Schorl is a rare black mineral that is a member of the tourmaline group and is composed of sodium, lithium, aluminum, boron, and silicon.
Disclaimer: The countries listed above are common sources for the rare minerals mentioned, but they're not the only places where you might find them. Availability and rarity can differ depending on the location, so the countries listed are a general indication rather than a definitive list.