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Prazem quartz, more commonly known simply as Prazem, is an attractive variety of macrocrystalline quartz distinguished by its characteristic green color. This color is due to small, often needle-like, mineral inclusions, most often green actinolite, but hedenbergite, chlorite, or hornblende may also be present. It is these mineral inclusions that give the stone its unique texture and visual interest, making each specimen unique. Prazem shades range from pale green to deep onion green, depending on the type, density, and distribution of the inclusions.

Unlike chrysoprase (a nickel-colored variety of chalcedony), prazem's green color comes from these visible microinclusions of other minerals within the quartz crystal. Praseite is usually found in veins and cavities in rocks, often in association with other varieties of quartz, such as rock crystal, amethyst, or smoky quartz.

Significant deposits of praseite are found in various parts of the world, including the island of Elba (Italy), Brazil, Finland, Austria, Scotland, and the United States. Due to its attractiveness and sufficient hardness (7 on the Mohs scale), praseite is valued in jewelry. It is used to create original cabochons, beads, pendants, and other ornaments. The stone has a vitreous luster, and its polished surface is smooth. Unique patterns created by inclusions can appear differently depending on the lighting, adding depth to the stone.

Praseite is also a popular object for mineral collectors due to its aesthetic appeal, relative rarity compared to other varieties of quartz, and interesting geological history. This is a magnificent natural stone that combines the durability of quartz with the unique beauty of green mineral inclusions.

Rubellite is a fascinating gemstone variety of the mineral tourmaline, renowned for its rich palette of shades from pale pink to deep crimson and rich ruby-red. Its name comes from the Latin 'rubellus', meaning 'reddish', referring to its characteristic color, which can resemble ruby, but often has a unique brightness and sometimes a purple or pink undertone. This stone is valued for its beauty, transparency and intensity of color.

The main deposits of high-quality rubellite are found in Brazil (especially the state of Minas Gerais), Madagascar, Afghanistan, the USA (California), Nigeria and Mozambique. Rubellite, like other tourmalines of the elbaite group, usually forms in granitic pegmatites - unique geological formations rich in rare elements. Its companions are often quartz, lepidolite, albite and other minerals of the pegmatite complex.

Rubellite is highly prized in jewelry for its hardness and brilliance. Collectors also seek out well-formed crystals and specimens with rich, uniform color. Its vibrant color is associated with vitality, warmth, and passion. It is believed that contemplating its deep hues can inspire, instill confidence, and promote emotional openness.

Due to its beauty and rarity, rubellite is an excellent choice for those seeking a bright and expressive gemstone for a collection or a unique piece of jewelry.