How opals are formed
By: Tamatha Campbell
Opals are beautiful stones used for jewelry and small sculptures. Many of them are white or clear, but some of them have a gorgeous array of colors. Chemically, opal is similar to glass, quartz, and those little silica gel packets that are meant to keep...
An introduction to common precious stones
By: B. J. Deming
The world of gemstones is beautiful and varied. While every jewel is highly valued by someone, we instinctively recognize the classic precious stones. Amber is beautiful, and yet it’s obvious that no one would make a Diamond Room or Ruby Room as they once...
By: Blaise Pascal
During an eruption, lava leaving a source (volcano, vent, or crater) travels across the surface and either reaches the ocean or eventually stops. The hardened surface produced after the lava has completely cooled and solidified isn't necessarily that interesting. It can have an interesting look...
By: Kayla Chen
The stunning colors of a precious opal speak of its rarity. Precious opal gemstones are not found in many places in the world. Australia is home to 95% of the world’s deposit of opal. The special and specific conditions that led to the formation...
By: Gemma L. Reece
Highly valued as a construction, flooring and sculpture material since ancient times, most famously by the Ancient Greeks and Romans, marble is prized for its smooth, soft nature, its strength and purity; it can be found in many countries and is usually associated with refinement...
By: Blaise Pascal
Marble is a highly valued rock known for its strength, aesthetics, ability to be polished and resistance to most weathering. It has a variety of uses and has been used by current or ancient civilizations for building applications and statues. This material comes in a...
By: Blaise Pascal
Rubies are considered one of the most expensive and valued gems in the world. They are in the highest class of precious stones along with diamond and sapphire. Rubies have a high hardness and toughness which make them a good jewelry stone and are only...
What is the difference between a semi-precious stone and a gem?
By: Tamatha Campbell
What are precious and semi-precious gems? According to Galleries.com, gems are stones or stone-like items which are prized as ornaments, particularly for the fashioning of jewelry. Most gems are minerals such as diamonds, fluorite, and lapis lazuli. Some gems have biological origins, such as...
By: Blaise Pascal
Turquoise is quite possibly one of the oldest known gemstones. Pharaohs, early Native Americans, and the Aztecs Kings have all used and prized turquoise. The word turquoise has even become synonymous with that particular color of blue or colors of blue that are close to...
By: Michael Totten
In nature, emeralds are found as hexagonal beryl crystals which have a deep green color. An emerald, which is part of a lode or which has been worn down, may no longer appear hexagonal. Dark carbon impurities inside the crystal can also give the emerald...

 

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