Understanding the MOHS Scale: A Guide to Gemstone Hardness and Wearability

At Lee Alexander & Co., every gemstone is chosen not just for its beauty, but for its meaning, durability, and suitability in memorial jewelry that’s meant to last a lifetime. Whether you're selecting a birthstone to personalize a cremation ring or designing a one-of-a-kind pendant, understanding the Mohs Scale of Hardness can help you make a confident, lasting choice.

What Is the Mohs Scale?

The Mohs Scale of Hardness is a 1–10 ranking system that measures how well a mineral resists scratching. Developed by German geologist Friedrich Mohs, the scale helps jewelers, designers, and customers understand a stone’s durabilityand how it might perform over time, especially in everyday wear.

Why Does Hardness Matter in Jewelry?

• Higher MOHS (7–10): Best for everyday rings and pendants. More resistant to scratches.

• Mid-range MOHS (5–7): Great for occasional wear or pieces with protective settings.

• Lower MOHS (1–4): Beautiful but delicate — best for earrings or pieces not exposed to frequent impact.

Gemstones by Mohs Hardness — Birthstones & Popular Lee Alexander Picks