Quartz gemstone, one of the most abundant minerals on Earth, is a versatile gem prized for its beauty, durability and variety of colors. Found in a variety of formations, from geodes to clusters, quartz can be transparent, translucent, or opaque, displaying every imaginable color. Below, we will discover an A-Z guide to the different types of quartz, their origins, how they are mined, and why they are valuable.
A-Z Types of Quartz Gemstone
Type | Origin | Main Mines | Year Discovered | Colors |
Amethyst | Brazil, Uruguay | Rio Grande do Sul (Brazil), Artigas (Uruguay) | Ancient | Purple, violet |
Ametrine | Bolivia | Anahí Mine, Bolivia | 17th century | Yellow, purple (combination) |
Aventurine | India, Brazil | Tamil Nadu (India), Minas Gerais (Brazil) | 18th century | Green, blue, orange |
Blue Quartz | Brazil, Russia | Bahia (Brazil), Ural Mountains (Russia) | Modern | Light to deep blue |
Citrine | Brazil, Madagascar | Minas Gerais (Brazil), Antananarivo (Madagascar) | Ancient | Yellow, orange |
Chalcedony | Turkey, Brazil | Catalca (Turkey), Rio Grande do Sul (Brazil) | Ancient | Light blue, white, pink |
Herkimer Diamond | USA (New York) | Herkimer County (USA) | 18th century | Clear, colorless |
Milky Quartz | Worldwide | Found globally | Ancient | White, cloudy |
Prasiolite | Brazil | Minas Gerais (Brazil) | 1950s | Light green |
Rose Quartz | Madagascar, Brazil | Minas Gerais (Brazil), Antananarivo (Madagascar) | Ancient | Light to deep pink |
Rutilated Quartz | Brazil, Madagascar | Minas Gerais (Brazil), Madagascar | Modern | Transparent with gold inclusions |
Smoky Quartz | Switzerland, USA | Cairngorms (Scotland), Pikes Peak (USA) | Ancient | Brown, smoky gray |
Tiger’s Eye | South Africa, India | Northern Cape (South Africa), Tamil Nadu (India) | 1800s | Golden brown, red-brown |
Tourmalinated Quartz | Brazil, Madagascar | Minas Gerais (Brazil), Madagascar | Modern | Transparent with black inclusions |
Description and History
Amethyst
Amethyst is perhaps the most famous of Quartz varieties, revered since ancient times. Found mainly in Brazil and Uruguay, this gemstone’s rich purple hue comes from iron and irradiation within the crystal. Amethyst has been used in various cultures for spiritual and decorative purposes and was once considered as valuable as diamonds. Its name comes from the Greek word “amethystos,” meaning “not drunken,” as it was believed to ward off intoxication(
Ametrine
Ametrine is a rare variety that combines both Amethyst and Citrine in one stone, offering a blend of purple and yellow colors. It originates primarily from Bolivia, particularly the Anahí mine. The unique color combination comes from differing temperatures during the crystal’s formation. Ametrine’s scarcity makes it one of the more valuable forms of Quartz
Aventurine
Aventurine is an opaque form of Quartz, typically green but also available in other shades like orange or blue. Found mainly in India and Brazil, the shimmering effect, known as “aventurescence,” is caused by mineral inclusions such as mica or hematite. Aventurine is valued for its beauty and believed metaphysical properties, associated with luck and opportunity
Blue Quartz
Blue Quartz is relatively uncommon and is prized for its beautiful range of blue tones. It can be found in Brazil and Russia, often in massive form rather than in clear crystals. Some Blue Quartz is synthetic, where clear Quartz is irradiated with gold to produce the striking blue hue
Citrine
Citrine, a yellow to orange variety of Quartz, has been used as a gemstone since ancient times. Most natural Citrine is rare, so much of what is sold today is heat-treated Amethyst or Smoky Quartz. It is found primarily in Brazil and Madagascar. Citrine is associated with positivity and abundance, making it popular in jewelry
Rose Quartz gemstone
Rose Quartz, with its gentle pink hue, is a favorite for both jewelry and decorative carvings. It can be found in Madagascar and Brazil and has been valued for centuries for its supposed ability to promote love and healing. The color of Rose Quartz comes from trace amounts of titanium or manganese
Rutilated Quartz gemstone
Rutilated Quartz contains needle-like inclusions of rutile, often in gold or silver colors. Found primarily in Brazil and Madagascar, this variety of Quartz is highly prized for its unique appearance and is often used in high-end jewelry. The inclusions create an internal shimmer that adds to its aesthetic and metaphysical value
Smoky Quartz gemstone
Smoky Quartz ranges from light brown to almost black and is found in areas like Switzerland and the USA. Its color is due to natural irradiation of aluminum impurities in the crystal. Smoky Quartz has been used in various cultures as a talisman against negative energy
Tiger’s Eye
Tiger’s Eye is a chatoyant gemstone that exhibits a silky luster and rich brown color. This variety of Quartz is mined in South Africa and India and has been used in jewelry for centuries. Its reflective qualities are due to the fibrous structure of the stone, which creates a unique, shifting light effect
Value of Quartz gemstone
The value of quartz depends on many factors, including rarity, clarity, color and the presence of unique inclusions. Rare varieties such as ametrine and rutile quartz command the highest prices due to their rarity and demand. More common forms such as amethyst, citrine and rose quartz are widely available, but still prized for their beauty and symbolic meanings.
Frequently Asked Questions
1. What makes Quartz valuable? Quartz’s value is determined by its type, rarity, clarity, and color. Varieties like Amethyst, Ametrine, and Rutilated Quartz are more valuable due to their rarity and unique appearance.
2. Can Quartz be used in everyday jewelry? Yes, Quartz is a durable mineral that ranks 7 on the Mohs scale, making it suitable for everyday wear. Varieties like Amethyst, Citrine, and Smoky Quartz are often used in rings, necklaces, and bracelets.
3. Where is the best place to find Quartz? The best Quartz varieties come from Brazil, Madagascar, South Africa, and the USA. Brazil, in particular, is known for its high-quality Amethyst and Citrine deposits.
4. Is Blue Quartz natural? Natural Blue Quartz is rare, but some commercial Blue Quartz is created by irradiating clear Quartz with gold to achieve the blue hue.
In summary, Quartz is one of the most versatile and widely appreciated gemstones, offering a vast array of types, each with its unique story, color, and metaphysical properties. Its affordability, combined with beauty and durability, ensures its place in the world of gemstones.