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Hematite – Hematite is a brittle iron oxide mineral mined as iron ore. Growing as several different crystal formations, Hematite can be seen in a metallic grey to black palette or even browns and reds. Red Hematite can occur in aqueous environments or from volcanic activity and is often the cause of the red pigment in soils throughout the world. Hematite’s spectral signature has even been discovered on Mars.
Hemimorphite – Hemimorphite is a silicate mineral that is white, blue or greenish. It can grow as crystalline layers with an almost bubbled look, granular crystals or fine needle-shaped stalactite clusters. It is found in many areas, but Belgium and Germany are particularly well known for their deposits of Hemimorphite. Starborn Generally uses a light to bright blue natural Hemimorphite Drusy in our designs.
Herkimer Diamond (Quartz Crystal) – The double terminated quartz crystals discovered around Herkimer County, New York are known as Herkimer Diamonds. These crystals are known for their extreme clarity but are also seen with inclusions; a rare water pocket inclusion and a common black carbon speckled pattern inclusion.
Hessonite Garnet – The gem variety of grossular garnet that ranges in color between honey to cinnamon-brown is known as hessonite garnetl. The coloring in these garnets is created from inclusions of manganese.
Hiddenite – Hiddenite is the pale yellow to emerald green variety of Spodumene which gets its coloration from Chromium, which is a common cause of green in gemstones. Many of the Hiddenite crystals range from a lighter yellow end to a deeper green end on a single crystal. Hiddenite was first discovered in North Carolina, and has only a handful of localities around the world. Other varieties of green Spodumene which do not get their coloration from Chromium are not considered to be Hiddenite. Pink varieties of Spodumene are known as Kunzite.
Howlite – Howlite is a borate mineral discovered in 1868 by Henry How. Naturally white, these cauliflower-like nodules often display a black webbing pattern and can be dyed to imitate turquoise or other stones. Howlite is believed to assist in the relief of stress.
Hypersthene – Hypersthene is a rock-forming inosilicate mineral that is green, brown or green in color. Certain sections of Hypersthene masses display a metallic sheen, known as “schiller”, when cut and polished, making it unique for use in the jewelry industry. Certain stony and iron meteorites have been found containing Hypersthene.