Natural and ornamental stones
Naturals
White Topaz : Timeless clarity
Key Strengths and Recommended Uses
- High clarity and pure transparency, ideal for imitating colorless gemstones.
- Wear-resistant thanks to a hardness of 8 on the Mohs scale.
- Available in various sizes, suitable for minimalist jewelry or as a centerpiece stone.
- Suitable for everyday jewelry or designs requiring cost-effective alternatives to diamonds.
Description :
White Topaz, a colorless variety of topaz, stands out for its high clarity and subtle light reflection. With a strong hardness of 8 on the Mohs scale, this gemstone is well-suited for designs requiring both durability and aesthetics. Primarily used in jewelry, it provides a natural and cost-effective alternative to more precious stones like diamonds.
Technical Properties
| Properties | Values |
|---|---|
| Composition | Al₂SiO₄(F,OH)₂ |
| Hardness (Mohs) | 8 |
| Refractive Index | 1.61 – 1.64 |
| Dispersion | 0.014 |
| Density (g/cm³) | 3.54 |
| Fire Resistance | Medium to high |
Fire resistance: Variable depending on the color. Refer to the technical properties of the stones.
Peridot, the natural freshness
Description :
Peridot, a member of the olivine family, is known for its vibrant green to yellow-green color, derived from its magnesium and iron-rich composition. This mineral offers high transparency and a natural hue that is difficult to replicate artificially. While slightly softer than other gemstones, it is ideal for creative jewelry designs that require natural and luminous tones.
Technical Properties
| Properties | Values |
|---|---|
| Composition | (Mg,Fe)₂SiO₄ |
| Hardness (Mohs) | 6.5 – 7 |
| Refractive Index | 1.64 – 1.69 |
| Dispersion | 0.020 |
| Density (g/cm³) | 3.27 |
| Fire Resistance | Resistant |
Key Strengths and Recommended Uses
- Distinct natural color (vivid green to yellow-green), unique among natural gemstones.
- Good transparency, providing a bright and radiant appearance in jewelry.
- Easy to cut into various shapes, suitable for creative and modern designs.
- Ideal for nature-inspired designs or jewelry with vibrant colors.
Black Spinel: Mystical Elegance
Key Strengths and Recommended Uses
- Uniform and natural black color, requiring no treatment.
- High durability (hardness of 8), suitable for sturdy and resilient jewelry.
- A natural option for modern or masculine designs.
- Suitable for everyday jewelry or minimalist accessories.
Description :
Black Spinel is a natural mineral valued for its uniform black color and exceptional durability (hardness of 8 on the Mohs scale). Unlike many other black gemstones, spinel requires no treatment to reveal its intense hue. It is prized for modern and minimalist designs, as well as for durable jewelry suited for everyday wear.
Technical Properties
| Properties | Values |
|---|---|
| Composition | MgAl₂O₄ |
| Hardness (Mohs) | 8 |
| Refractive Index | 1.72 |
| Dispersion | 0.02 |
| Density (g/cm³) | 3.58 |
| Fire Resistance | Highly durable. |
Smoky Quartz: Neutral and Versatile Tones
Description :
Smoky Quartz, or quartz fumé, is a variety of quartz known for its shades ranging from light brown to dark brown. These natural color variations result from exposure to natural radiation. Highly durable (hardness of 7 on the Mohs scale), it is used in both classic jewelry and contemporary designs where neutral and elegant tones are desired.
Technical Properties
| Properties | Values |
|---|---|
| Composition | SiO2 |
| Hardness (Mohs) | 7 |
| Refractive Index | 1.54 |
| Dispersion | 0.013 |
| Density (g/cm³) | 2.65 – 2.91 |
| Fire Resistance | Resistant |
Key Strengths and Recommended Uses
- Neutral and elegant tones, perfect for complementing various jewelry styles.
- Wear-resistant with a hardness of 7, ideal for durable pieces.
- Wide range of sizes and shapes available, suitable for both vintage and contemporary designs.
- Suitable for everyday jewelry or timeless creations.
Garnet: Rich and Intense Reds
Key Strengths and Recommended Uses
- Rich and intense red hues, well-suited for bold designs.
- Wide availability in various sizes and shapes, making it easy to incorporate into different projects.
- High transparency, providing a vibrant and brilliant visual appeal.
- Versatile, suitable for both high jewelry and more accessible pieces.
Description :
Garnet is a family of minerals with a range of hues, though intense red is the most common. With high transparency and a wide variety of available sizes and shapes, garnet is a versatile option for creations ranging from everyday jewelry to high-end pieces. It is easy to cut and polish, making it suitable for both mass production and unique designs.
Technical Properties
| Properties | Values |
|---|---|
| Composition | A₃B₂(SiO₄)₃ |
| Hardness (Mohs) | 6.5 – 7.5 |
| Refractive Index | 1.73 – 1.89 |
| Dispersion | 0.057 |
| Density (g/cm³) | 3.4 – 4.3 |
| Fire Resistance | Highly durable. |
Green Agate: Natural Softness
Description :
Green Agate is a variety of chalcedony known for its uniform and luminous green hue. Formed through a natural process where minerals accumulate in layers, it offers good translucency and durability, making it well-suited for everyday jewelry. Thanks to its natural optical properties, it is used in both classic jewelry and modern designs.
Technical Properties
| Properties | Values |
|---|---|
| Composition | SiO₂ (Calcédoine) |
| Hardness (Mohs) | 6.5 – 7 |
| Refractive Index | 1.54 – 1.55 |
| Dispersion | 0.004 |
| Density (g/cm³) | 2.58 – 2.64 |
| Fire Resistance | Medium |
Key Strengths and Recommended Uses
- Intense and uniform green color, ideal for natural and elegant designs.
- Good durability (hardness of 6.5 to 7), suitable for everyday jewelry.
- Easy to cut and polish, providing a smooth and glossy finish.
- Perfect for rings, pendants, and bracelets, whether classic or fashion-forward.
Black Onyx: Deep Black
Key Strengths and Recommended Uses
- Uniform and intense black color, with no artificial treatment.
- Easy to polish, providing either a glossy or matte finish depending on the desired look.
- Good resistance to scratches and wear, perfect for everyday jewelry.
- Ideal for rings, necklaces, and bracelets, whether masculine or contemporary.
Description :
Black Onyx is an opaque variety of black agate, formed through the successive deposition of silica in rock cavities. Its uniform and intense appearance makes it a sought-after stone for understated and elegant jewelry. With good resistance to impact and scratches, it is well-suited for minimalist designs and masculine accessories. It can be finished with either a glossy or matte polish, depending on preference.
Technical Properties
| Properties | Values |
|---|---|
| Composition | SiO₂ (Calcédoine) |
| Hardness (Mohs) | 6.5 – 7 |
| Refractive Index | 1.54 – 1.55 |
| Dispersion | 0.004 |
| Density (g/cm³) | 2.58 – 2.64 |
| Fire Resistance | Medium |
Marcasite: Metallic and Structured Shine
Description :
Marcasite is a natural mineral composed of iron sulfide (FeS₂), known for its silvery metallic appearance and unique crystalline structure. Its natural luster makes it ideal for elegant jewelry with vintage-inspired designs. Unlike precious metals, it does not tarnish and retains its natural brilliance. It is highly valued for bezel-set creations or as inlays in intricately designed jewelry.
Technical Properties
| Properties | Values |
|---|---|
| Composition | FeS₂ (Iron Sulfide) |
| Hardness (Mohs) | 6 – 6.5 |
| Refractive Index | 1.81 – 1.83 |
| Dispersion | 0.020 |
| Density (g/cm³) | 4.85 – 4.90 |
| Fire Resistance | Sensitive |
Key Strengths and Recommended Uses
- Natural metallic effect with silvery reflections.
- Distinctive crystalline structure, providing textured designs.
- Ideal for vintage or Art Deco-inspired jewelry.
- Perfect for bezel settings or decorative inlays.
Ornementals
Malachite: Natural Elegance
Key Strengths and Recommended Uses
- Unique veined patterns and deep green hues.
- Easy to polish for smooth and elegant finishes.
- Ideal for artistic jewelry and decorative pieces.
- Suitable for nature-inspired designs or luxury accessories.
Description :
Malachite is a natural green stone characterized by its unique concentric patterns formed by bands of varying green shades. Composed of copper carbonate, it boasts a vibrant hue and distinctive texture. Although relatively soft (hardness of 3.5 to 4 on the Mohs scale), it is widely used for decorative creations and jewelry requiring polished, elegant finishes.
Technical Properties
| Properties | Values |
|---|---|
| Composition | Cu₂(CO₃)(OH)₂ |
| Hardness (Mohs) | 3.5-4 |
| Refractive Index | ~1.65 |
| Dispersion | None |
| Density (g/cm³) | 3.6-4.05 |
| Fire Resistance | Low |
Tiger’s Eye: Shimmering Reflections and Durability
Description :
Tiger’s Eye is a brown-gold variety of quartz with shimmering reflections caused by altered crocidolite fibers. This stone is prized for its unique optical effects, known as chatoyancy, which create luminous bands and a silky appearance. With a hardness of 7 on the Mohs scale, it is ideal for durable jewelry or decorative pieces.
Technical Properties
| Properties | Values |
|---|---|
| Composition | SiO₂ (Quartz with altered crocidolite inclusions) |
| Hardness (Mohs) | 6.5 – 7 |
| Refractive Index | ~1.54 |
| Dispersion | ~0.004 |
| Density (g/cm³) | 2.64-2.71 |
| Fire Resistance | Resistant |
Key Strengths and Recommended Uses
- Distinctive chatoyant effect with golden and brown reflections.
- Good durability (hardness of 7), ideal for sturdy jewelry.
- Suitable for modern and masculine designs.
Red Jasper: Intense and Durable
Key Strengths and Recommended Uses
- Uniform and natural red hue.
- Highly wear-resistant, perfect for durable jewelry.
- Ideal for rustic or earthy designs.
Description :
Red Jasper is an opaque natural stone with deep red tones, often speckled with small inclusions that enhance its visual texture. Composed primarily of silicon dioxide (SiO₂), it is valued for its durability (hardness of 6.5 to 7) and its ability to be polished for designs with a rustic or earthy aesthetic.
Technical Properties
| Properties | Values |
|---|---|
| Composition | SiO₂ (Microcrystalline quartz with iron inclusions) |
| Hardness (Mohs) | 6.5-7 |
| Refractive Index | ~1.54 |
| Dispersion | ~0.004 |
| Density (g/cm³) | 2.58-2.91 |
| Fire Resistance | Resistant |
Red Agate: The Vibrant Hue
Description :
Red Agate is a variety of chalcedony known for its vibrant and uniform red hues. With a good hardness (6.5 to 7 on the Mohs scale), it is well-suited for both fashion and traditional jewelry. This stone is often used in designs that require subtle transparency and warm colors.
Technical Properties
| Properties | Values |
|---|---|
| Composition | SiO₂ (Chalcedony colored by iron oxides) |
| Hardness (Mohs) | 6.5 – 7 |
| Refractive Index | ~1.54 |
| Dispersion | ~0.004 |
| Density (g/cm³) | ~2.65 |
| Fire Resistance | Resistant |
Key Strengths and Recommended Uses
- Uniform red color with slight translucency.
- Good resistance (hardness 6.5 to 7), suitable for everyday jewelry.
- Ideal for classic or fashion jewelry designs.
Lapis Lazuli: Royal Blue and Natural Brilliance
Key Strengths and Recommended Uses
- Bleu royal profond enrichi de paillettes dorées de pyrite.
- Easy to polish for refined finishes.
- Ideal for statement or historical jewelry.
Description :
Lapis Lazuli is a royal blue gemstone speckled with golden pyrite flecks, creating a striking visual contrast. Composed primarily of lazurite, it is valued for its natural beauty and ability to be carved or polished. Relatively soft (hardness of 5 to 5.5 on the Mohs scale), it is well-suited for statement jewelry and decorative objects.
Technical Properties
| Properties | Values |
|---|---|
| Composition | (Na,Ca)₈(AlSiO₄)₆(SO₄,S,Cl)₂ |
| Hardness (Mohs) | 5-6 |
| Refractive Index | ~1.50 |
| Dispersion | None |
| Density (g/cm³) | 2.7-3 |
| Fire Resistance | Moderately resistant. |
Agate Lace: Artistic Patterns for Unique Designs
Description :
Lace Agate, or Agate Dentelle, is a variety of agate characterized by its intricate, wavy patterns, often in multiple colors. Its alternating layers of chalcedony create natural designs, making it an ideal stone for unique and artistic jewelry. With a hardness of 6.5 to 7 on the Mohs scale, it is well-suited for decorative applications and everyday jewelry.
Technical Properties
| Properties | Values |
|---|---|
| Composition | Be₃Al₂Si₆O₁₈ |
| Hardness (Mohs) | 6.5-7 |
| Refractive Index | ~1.54 |
| Dispersion | ~0.004 |
| Density (g/cm³) | 2.65 |
| Fire Resistance | Resistant |
Key Strengths and Recommended Uses
- Natural wavy patterns reminiscent of lace.
- Good durability for everyday jewelry.
- Ideal for personalized and artistic designs.
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