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BraceletOnyx vs Agate: What’s the Difference Between These Beautiful Gemstones?
When it comes to beautiful banded gemstones, onyx and agate are often mentioned in the same breath — and for good reason. Both belong to the chalcedony family (a type of quartz) and share similar chemical compositions. Yet, they each have unique patterns, colors, and uses that make them special in jewelry design.
1. What Is Agate?
Agate is known for its curved, wavy, or concentric bands that come in a variety of colors. Formed in volcanic or sedimentary rock cavities, these bands are created by layers of silica over thousands of years.
Key Features of Agate:
- Curved, wave-like, or circular patterns
- Multicolored layers — from reds and blues to greens and grays
- Semi-transparent to opaque
- Popular for beads, pendants, carvings, and decorative objects
2. What Is Onyx?
Onyx is actually a specific variety of agate, but with a distinctive difference: its bands are straight and parallel rather than curved. It’s most famously found in black-and-white combinations, although variations like sardonyx (red and white) also exist.
Key Features of Onyx:
- Straight, parallel bands
- High-contrast colors (black and white are most common)
- Usually opaque
- Favored for rings, statement pendants, cufflinks, and masculine jewelry designs
3. Main Differences Between Onyx and Agate
| Feature | Agate | Onyx |
|---|---|---|
| Band Pattern | Curved, wavy, or circular | Straight, parallel |
| Color Variety | Multicolored | Mostly black/white or red/white |
| Look & Feel | Soft, flowing, artistic | Bold, clean, striking |
| Common Uses | Decorative beads, boho-style jewelry | Sleek rings, formal jewelry, signet designs |
4. How to Style Onyx and Agate Jewelry
- Onyx: Perfect for formal or minimalist styles. Pair a black onyx pendant or ring with neutral outfits for a bold yet refined look.
- Agate: Its colorful variety makes it ideal for casual or bohemian styles. A multicolored agate bracelet adds character to everyday wear.
5. Why Choose Genuine Stones?
Both onyx and agate are sometimes dyed to enhance color. At Glimara, we only work with ethically sourced, natural gemstones, ensuring every piece is authentic and timeless.
Shop Our Agate & Onyx Jewelry
From sleek black onyx rings to colorful agate bracelets, our collection combines natural beauty with lasting craftsmanship. Every design is made with S925 sterling silver and hand-polished gemstones.