A Beginner’s Guide to the Most Popular Gemstones and How to Recognize Them
A beginner-friendly guide to the most popular gemstones — ruby, sapphire, emerald, spinel, tourmaline — including colors, hardness, lookalikes, and jewelry uses.
7/1/20253 min read
When I first started working with gemstones, I could barely tell a ruby from a spinel. They all sparkled. They were all red. And honestly, I was just scared of buying the wrong thing.
If you’ve ever felt the same — welcome. Here’s the guide I wish I had when I started: a personal breakdown of the most popular gemstones, how to recognize them, and what makes each one special. Whether you’re buying for jewelry or just falling in love with colors, this is your cheat sheet.
Ruby
Color: Vivid red to pinkish-red
Hardness: 9 on Mohs scale
Common Confusions: Red spinel, garnet
Jewelry Use: Ideal for rings, pendants, and heirloom pieces due to its hardness and value
Tip: The most valuable rubies have a pure, intense red with a slight blue undertone — often called “pigeon’s blood.”
“Real ruby has a fire that glows even in low light. It's not just red — it's alive.”
2. Sapphire
Color: Best known in deep blue, but also comes in pink, yellow, green, and even white
Hardness: 9 on Mohs scale
Common Confusions: Spinel (blue), iolite, topaz
Jewelry Use: Engagement rings, earrings, bracelets
Tip: If it’s too dark to see the color in low light, it’s probably not a top-quality sapphire.
3. Emerald
Color: Lush green to bluish-green
Hardness: 7.5–8 (but can be brittle due to inclusions)
Common Confusions: Green tourmaline, peridot
Jewelry Use: Often used in rings and pendants, usually set with protective designs
Tip: Almost all emeralds have inclusions — don’t expect perfection. Look for color, not clarity.
“Emerald isn’t shy about its flaws — but its color is worth everything.”
4. Spinel
Color: Red, pink, blue, lavender, gray, even black
Hardness: 7.5–8
Common Confusions: Ruby (for red spinel), sapphire (for blue spinel)
Jewelry Use: Very versatile, strong and durable for daily wear
Tip: Spinel often has amazing brilliance and fewer inclusions than ruby — and it's often more affordable.
5. Tourmaline
Color: Every color imaginable — green, pink, blue (paraiba), bi-color, etc.
Hardness: 7–7.5
Common Confusions: Peridot (green), topaz (pink), sapphire (blue)
Jewelry Use: Statement rings, colorful necklaces, earrings
Tip: One of the most colorful stones on earth — no two are exactly alike. Perfect if you want something unique.
Final Thoughts: Fall in Love, Then Learn
Here’s something I believe deeply: You don’t need to memorize every fact to enjoy gemstones. Start with what catches your eye. Then ask what it is. Then learn its story.
Understanding the differences — like ruby vs spinel, sapphire vs iolite — will help you buy better, choose with confidence, and maybe even fall in love with the right stone the first time.
Want to see real examples? Visit our [Gems Gallery] or connect with us on Instagram for daily gemstone drops.