1. Lapis Lazuli

Chemical Formula: Usually a mixture of lazurite (Na₈–₁₀Al₆Si₆O₂₄S₂–₄), pyrite, and calcite
Mineral Group: Feldspathoid (lazurite is the main mineral)
Crystal System: Isometric
Hardness: 5–5.5
Main Sources: Afghanistan (Badakhshan), Chile, Pakistan, Russia

Scientific Description:
Lapis lazuli is not a mineral, but a rock, and it consists of a combination of lazurite, pyrite, and calcite minerals. Lazurite gives the stone its deep blue color, while pyrite provides golden sparkles. The highest quality lapis is extracted from Afghanistan. It has been used for thousands of years as a pigment (ultramarine) and a gemstone.

Why is it valuable in jewelry?

• Its deep blue color and golden pyrite specks are unique.

• It perfectly suits vintage, ethnic, and mythological themes.

2. Coral

Chemical Formula: CaCO₃ (Calcium carbonate – aragonite form)
Mineral Group: Carbonate
Hardness: 3–4
Source: Formed from colony corals naturally living in the seas.

Scientific Description:
Coral is not a mineral, but an organic stone secreted by marine organisms (polyps). Its structure is calcium carbonate and it exists in the aragonite crystal form. Red coral from the Mediterranean and around Japan is the most valuable type.

Why is it valuable in jewelry?

• Its vibrant red hue is rare.

• It is lightweight and very popular in ethnic and retro earrings.

3. Citrine

Chemical Formula: SiO₂
Mineral Group: Quartz
Color Source: Fe³⁺ and heat
Crystal System: Trigonal
Hardness: 7
Main Sources: Brazil, Madagascar, Russia

Scientific Description:
Citrine is a type of natural yellow-orange quartz. Its color is due to the presence of iron in different oxidation states. Most citrines on the market are obtained by heating amethyst; natural citrine is rarer.

Why is it valuable in jewelry?

• It refracts light in warm tones.

• It provides a bright energy in retro-modern jewelry.

4. Jade (Jadeite & Nephrite)

Chemical Formula:

• Jadeite: NaAlSi₂O₆

• Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂

Mineral Group:

• Jadeite: Pyroxene

• Nephrite: Amphibole

Crystal System:

• Jadeite: Monoclinic

• Nephrite: Monoclinic

Hardness: 6–7
Main Sources: Myanmar (jadeite), China, New Zealand, Canada

Scientific Description:
Under the name jade, there are two different minerals: jadeite and nephrite. Jadeite is rarer and more valuable; it is known for its vibrant green tones. Nephrite, on the other hand, is more durable and has a fibrous structure.

Why is it valuable in jewelry?

• It is one of the stones with the highest "toughness" value, making it resistant to cracking.

• It has simple, elegant, and natural green tones.

5. Hematite

Chemical Formula: Fe₂O₃
Mineral Group: Oxide Minerals
Crystal System: Trigonal
Hardness: 5.5–6.5
Main Sources: Brazil, Canada, England, Turkey (Sivas)

Scientific Description:
Hematite is a mineral that gives a metallic gray-black appearance due to its high iron oxide content. It is known for leaving a red powder when scratched. Although its natural form is dull, polished, magnetized versions are often used in jewelry.

Why is it valuable in jewelry?

• It offers a shiny, metallic appearance.

• It is suitable for minimalist, modern, and masculine designs.

6. Pearl

Chemical Formula: CaCO₃ (Aragonite + Conchiolin organic matrix)
Mineral Group: Organic stone
Hardness: 2.5–4.5
Main Sources: Japan, China, Australia, Polynesia

Scientific Description:
A pearl is formed by the accumulation of nacre (mother-of-pearl) layers, which form the inner part of a mollusk's shell, around a foreign particle. Its layered structure interacts with light to create the pearl's characteristic iridescent (nacreous) luster.

Why is it valuable in jewelry?

• It offers a timeless, classic, and feminine luster.

• It instantly elevates any design to a premium look.

7. Amazonite

Chemical Formula: KAlSi₃O₈
Mineral Group: Feldspar (Microcline)
Crystal System: Triclinic
Hardness: 6–6.5
Main Sources: Russia, Brazil, USA (Colorado), Madagascar

Scientific Description:
Amazonite is a blue-green variety of microcline feldspar. Its color comes from trace elements of lead (Pb). It may contain white veins. The characteristic matte-blue appearance is due to the anti-cation ordering.

Why is it valuable in jewelry?

• Its matte and natural pastel tones are suitable for modern-minimalist designs.

8. Garnet

Chemical Formula: A₃B₂(SiO₄)₃ (A and B represent Ca, Mg, Fe, Mn types)
Mineral Group: Garnet Group
Crystal System: Cubic (Isometric)
Hardness: 6.5–7.5
Main Sources: India, Sri Lanka, Tanzania, USA

Scientific Description:
Garnet is not actually a single mineral; it consists of sub-types such as almandine, pyrope, and grossular. Red garnet is a mixture of almandine (Fe) and pyrope (Mg). It crystallizes in the cubic system and exhibits strong brilliance due to its high refractive index.

Why is it valuable in jewelry?

• Its deep wine-red tones offer a dramatic look.

• Its high hardness makes it durable.

9. Malachite

Chemical Formula: Cu₂CO₃(OH)₂
Mineral Group: Carbonate Minerals
Crystal System: Monoclinic
Hardness: 3.5–4
Main Sources: Congo, Zambia, Russia, Australia

Scientific Description:
Malachite is a copper carbonate mineral, and its characteristic green banded appearance is due to the copper (Cu) ions it contains. It is soft, so it is often used as polished cabochons or beads.

Why is it valuable in jewelry?

• Its natural banded patterns, including many shades of green, are unique.

• It is very popular in vintage & bohemian style jewelry.