Discover unique gems, custom jewelry awaits!

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

a display case filled with lots of different colored rocks
a display case filled with lots of different colored rocks

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.”

a close up of a brooch with a pearl
a close up of a brooch with a pearl

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.

blue stone on white surface
blue stone on white surface

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.”

silver and green gemstone studded necklace
silver and green gemstone studded necklace
a pair of green and black dice
a pair of green and black dice

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.

a pink diamond sitting on top of a pile of snow
a pink diamond sitting on top of a pile of snow
gold and silver ring on white table
gold and silver ring on white table

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.

purple and silver hair clip
purple and silver hair clip

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.