Gemstones have been collected, traded, and admired for thousands of years. Sapphire, ruby, emerald, opal, garnet, turquoise – each one has its own story, its own set of identifying features, and its own place in the natural world. The articles in this collection cover the most popular gemstones in plain language, with the kind of information that helps beginners actually recognize and understand what they are looking at.
What This Collection Covers
The Gemstones collection covers the most popular and recognizable gemstones including sapphire, ruby, emerald, opal, garnet, turquoise, topaz, and many others, how gemstones form and what makes them different from common rocks and minerals, simple identification features beginners can use including color, luster, hardness, and transparency, the difference between precious and semi-precious stones, how gemstones are graded and what affects their value, and what to look for when buying or collecting gemstones. No prior experience needed – these articles are written for anyone starting out.
Complete Guide
For a full beginner’s overview of gemstones, their properties, and how to identify them, our complete guide covers the essentials in one place.
Frequently Asked Questions
What is the difference between a gemstone and a regular rock?
A gemstone is a mineral that has been recognized for its beauty, durability, and rarity and is valued for use in jewelry or collecting. Most gemstones are crystals with a specific chemical composition. Regular rocks are typically made up of multiple minerals mixed together and are not selected for individual beauty or rarity. The same mineral – quartz for example – can be a common rock-forming mineral in one form and a prized gemstone like amethyst or citrine in another.
What are the most popular gemstones for beginners to learn about?
Sapphire, ruby, emerald, opal, garnet, turquoise, amethyst, and topaz are great starting points. They are widely recognized, well documented, and cover a range of colors, formation types, and identifying features. Learning these ten to twelve stones gives beginners a solid foundation for identifying and appreciating a much broader range of specimens.
How do I tell if a gemstone is real or fake?
Basic tests include checking hardness with the Mohs scale, looking at the stone under magnification for natural inclusions, testing its weight against glass imitations which are typically heavier, and checking for air bubbles which are a sign of glass. For valuable stones, professional testing with a refractometer or spectroscope gives definitive results. Our identification articles cover each test in beginner-friendly detail.
What is the difference between precious and semi-precious gemstones?
Traditionally the precious gemstones are diamond, ruby, emerald, and sapphire. Everything else has historically been called semi-precious. This distinction is largely a matter of convention and marketing rather than a strict scientific classification. Many semi-precious stones like alexandrite, tanzanite, and fine opal are rarer and more valuable than lower-quality precious stones. The terms are still widely used but do not reliably indicate value.
Where can I find gemstones in the United States?
More places than most people realize. Sapphires are found in Montana, rubies and emeralds in North Carolina, opals in Nevada and Idaho, garnets across multiple states, and turquoise throughout the Southwest. Many collecting sites are open to the public or operate as fee-dig operations where you pay for the experience and keep what you find. Our Gemstones by State collection covers specific locations across the country.