Segal Jewelry collection
Geometric Engagement Rings
Angular bezels, hexagons and asymmetric outlines for a modern, architectural ring. A good fit for anyone who finds halos too sweet.
Emerald shape / Mixed stones / White gold, Yellow gold
Alternative Engagement Rings
In shortAn alternative engagement ring uses a center stone other than a traditional white diamond. Sapphire, ruby and moissanite are the most practical choices because they rank 9 or above on the Mohs hardness scale. Softer stones such as morganite, opal or pearl can work, but need more protective settings and more careful wear.
Updated by Taya Sel
“Alternative” covers a lot of ground, from a sapphire solitaire that would not look out of place a century ago to a black moissanite in a geometric bezel. The practical question is always the same: will this stone survive being worn every day for decades?
Hardness at a glance
| Stone | Mohs hardness | Everyday wear notes |
|---|---|---|
| Diamond (natural or lab-grown) | 10 | The benchmark. Can still chip at thin edges. |
| Moissanite | 9.25 | Very hard; shows more colorful fire than diamond. |
| Sapphire and ruby | 9 | Excellent daily-wear choices in any color. |
| Emerald | 7.5 to 8 | Brittle and usually treated; choose a protective setting. |
| Morganite and aquamarine | 7.5 to 8 | Wearable with care; can look dull when not cleaned regularly. |
| Opal | 5.5 to 6.5 | Soft and sensitive to knocks and dryness. |
Hardness measures scratch resistance, not toughness. A stone can be hard yet still chip if struck at the wrong angle, which is why setting choice matters as much as stone choice.
For a deeper comparison of the most popular diamond alternative, read moissanite vs diamond.
Explore alternative engagement rings
- Moissanite Engagement Rings Moissanite center stones, with notes on sparkle, durability and value.
Frequently asked questions
What is the most durable alternative to a diamond?
Moissanite (about 9.25 on the Mohs scale) and corundum, the mineral family that includes sapphire and ruby (9), are the hardest common alternatives. Both hold up well to daily wear, though no stone is immune to chipping from a hard knock.
Is an emerald a good engagement ring stone?
Emerald is beautiful but relatively brittle, and most emeralds contain inclusions and are treated with oil or resin. It suits someone careful with their hands, ideally in a protective bezel or halo setting.