Spinel is a stunning gemstone that has been used in jewelry for centuries. Despite its beauty and durability, it is often overlooked in favor of more popular gemstones like diamonds, rubies, and sapphires. In this post, we'll take a closer look at spinel, including its chemical composition, physical properties, sources, and uses in jewelry.

What is Spinel?

Spinel is a mineral that is composed of magnesium, aluminum, and oxygen. It has a cubic crystal structure and is often found in octahedral or dodecahedral crystals. Spinel is formed in metamorphic and igneous rocks, often in association with corundum, garnet, and other minerals. It is also found in alluvial deposits, where it is often extracted through artisanal methods.

Properties of Spinel

Spinel is a hard and durable gemstone, with a Mohs hardness rating of 8.0. It has a refractive index of 1.71-1.78, which means it has excellent brilliance and fire. Spinel is not typically treated or enhanced, as its natural color is already quite beautiful. It is available in a range of colors, from red to pink, orange, purple, blue, and black.

Spinel is a mineral species that belongs to the spinel group, a family of minerals that includes gemstones like ruby and sapphire. Spinel gemstones have a unique crystal structure that gives them their characteristic brilliance, durability, and hardness. In this post, we will delve deeper into the mineral character of spinel stones, the various types of spinel, their colors, and their countries of origin.

Mineral Character of Spinel

Stones Spinel is composed of magnesium, aluminum, and oxygen, with trace amounts of other elements. Its crystal structure is cubic, which means that it has three axes of equal length that intersect at right angles. This symmetry gives spinel gemstones a high degree of brilliance and fire, making them popular for use in jewelry.

Spinel Types There are three main types of spinel:

1. Normal Spinel - This is the most common type of spinel and is composed of magnesium, aluminum, and oxygen. It comes in a range of colors, including red, pink, blue, purple, and black.

2. Gahnospinel - This spinel is a calcium-magnesium aluminum oxide and is usually brown, black, or green.

3. Pleonaste - This is an iron spinel and is usually dark green to black.

Colors of Spinel

Spinel is found in a wide range of colors, from red and pink to blue, purple, and black. Some of the most popular spinel colors include:

1. Red Spinel - This is the most valuable and sought-after spinel color, and it is often mistaken for ruby. The most famous red spinel is the Black Prince's Ruby, which is actually a 170-carat red spinel that was set in the Imperial State Crown of England.

2. Pink Spinel - This color is often described as a soft pink or rose pink, and it is becoming increasingly popular as an alternative to pink diamonds.

3. Blue Spinel - This color is known for its intense and vivid blue hues, which can range from pale sky blue to deep navy blue.

4. Purple Spinel - This color is often described as lavender or lilac, and it can also have pink or blue undertones.

5. Black Spinel - This color is usually opaque and is often used as a substitute for black diamonds.

Countries of Origin

Spinel is found in many countries around the world, including Afghanistan, Australia, Brazil, Cambodia, Madagascar, Myanmar, Sri Lanka, Tanzania, and Vietnam. Some of the most famous spinel mines are located in the Mogok region of Myanmar, which is known for producing some of the finest red and pink spinel stones. Other notable sources of spinel include Sri Lanka, Tanzania, and Vietnam.

In conclusion, spinel gemstones are a fascinating and beautiful mineral species that come in a variety of colors and types. Their unique crystal structure and hardness make them ideal for use in jewelry, and their rarity and beauty have made them highly prized by collectors and enthusiasts around the world. Whether you are looking for a vibrant red spinel or a soft pink one, there is a spinel gemstone out there to suit your taste and budget.

Spinel in Jewelry

Spinel has been used in jewelry for centuries, often as a substitute for other gemstones. For example, in the past, red spinel was often mistaken for ruby due to its similar appearance. Today, spinel is appreciated for its unique beauty and is used in a variety of jewelry designs, including rings, earrings, necklaces, and bracelets. Spinel is also a popular choice for engagement rings, as it is durable, brilliant, and less expensive than diamonds or colored gemstones like sapphires and emeralds.

Caring for Spinel

Like all gemstones, spinel requires proper care and maintenance in order to maintain its beauty over time. It is important to avoid exposing spinel to extreme temperatures or harsh chemicals, as these can damage the stone. Spinel should be cleaned regularly using a soft brush and mild soap and should be stored separately from other jewelry to prevent scratches

Conclusion

In conclusion, spinel is a beautiful and unique gemstone that deserves more recognition in the world of jewelry. Its range of colors, durability, and brilliance make it an excellent choice for engagement rings, as well as other types of jewelry. By understanding the properties and sources of spinel, you can appreciate its value and beauty, and perhaps even consider adding a spinel piece to your own jewelry collection.