Emerald vs Peridot (Olivine)
エメラルドとペリドット（オリビン）はどちらも人気の緑色宝石です。エメラルドは硬度と希少性で優れ、ペリドットは輝きと手頃な価格で魅力的です。
| Property | Emerald | Peridot (Olivine) |
|---|---|---|
| Category | Precious Gems | Semi-Precious Gems |
| Primary Color | green | green |
| Mohs Hardness | 7.5–8.0 | 6.5–7.0 |
| Specific Gravity | 2.67 | 3.27 |
| Refractive Index | 1.565 | 1.65 |
| Crystal System | Hexagonal | Orthorhombic |
| Luster | — | Vitreous,Greasy |
| Chemical Formula | — | — |
| Price Tier | Investment ($5,000+/ct) | Moderate ($50-500/ct) |
| Daily Wear | はい | いいえ |
Key Differences
- ◆ {'gem_a': '7.5', 'gem_b': '6.5', 'property': 'Hardness (Mohs)'}
- ◆ {'gem_a': 'Hexagonal', 'gem_b': 'Orthorhombic', 'property': 'Crystal System'}
- ◆ {'gem_a': '2.67', 'gem_b': '3.27', 'property': 'Specific Gravity'}
- ◆ {'gem_a': '1.565', 'gem_b': '1.65', 'property': 'Refractive Index'}
- ◆ {'gem_a': 'N/A', 'gem_b': 'Vitreous,Greasy', 'property': 'Luster'}
- ◆ {'gem_a': 'investment', 'gem_b': 'moderate', 'property': 'Price Range'}
- ◆ {'gem_a': 'Yes', 'gem_b': 'No', 'property': 'Daily Wear'}
When to choose Emerald
傷つきにくさ・希少性・高品質を重視する方、または5月の誕生石を探している方にエメラルドがお勧めです。
When to choose Peridot (Olivine)
より高い輝きや手頃な価格を求める方にはペリドット（オリビン）がお勧めです。婚約指輪や日常使いに最適です。
Frequently Asked Questions
Which is harder, Emerald or Peridot (Olivine)?
Emerald is harder at 7.5-8.0 on the Mohs scale, compared to Peridot (Olivine) at 6.5-7.0. This makes Emerald more resistant to scratching. Emerald is suitable for daily wear, while peridot (olivine) requires more careful handling and is not ideal for daily wear.
Is Emerald more expensive than Peridot (Olivine)?
Yes, Emerald is generally more expensive. Emerald is classified as investment-grade ($5,000+/ct) with prices around investment-grade ($5,000+/ct), while Peridot (Olivine) is moderately priced ($50-500/ct) at moderately priced ($50-500/ct).
Should I choose Emerald or Peridot (Olivine) for an engagement ring?
For an engagement ring, Emerald is the stronger choice with a durability rating of 8/10. At 7.5-8.0 Mohs hardness, it can withstand daily wear well. Peridot (Olivine) (6.5-7.0 Mohs) is softer and more prone to scratching with everyday use, making it better suited for occasional-wear jewelry.
How can I tell Emerald and Peridot (Olivine) apart?
There are several visual cues: both appear green, but often in different saturations; Peridot (Olivine) (RI 1.65-1.71) shows more brilliance than Emerald (RI 1.565-1.602); they have different crystal systems — Emerald is Hexagonal and Peridot (Olivine) is Orthorhombic. A gemologist can confirm identification using refractive index testing.
Why do Emerald and Peridot (Olivine) look similar?
Emerald and Peridot (Olivine) look similar because both gems display green hues.