Birthstones for Each Zodiac Sign

Birthstones are gemstones connected to each zodiac sign. Each stone has its history, meaning, and properties. This guide covers every zodiac sign with its primary birthstone and how it is used in jewelry.

Aries (March 21 – April 19) – Diamond Birthstone

The Aries birthstone is diamond. Made of pure carbon, diamond is the hardest natural material. It is valued for durability and light reflection. Aries diamond engagement rings are popular for their strength and brilliance. Diamonds work well in solitaire rings, halo designs, and as accent stones.

Source: Eryn 3ct diamond ring engagement ring

Stone Characteristics

• Composition: Pure carbon, crystallized

• Hardness: 10 on the Mohs scale (hardest natural material)

• Notes: Colorless or fancy colors. Resistant to scratching. Suitable for daily wear.

Taurus (April 20 – May 20) – Emerald Birthstone

The Taurus birthstone is emerald, a variety of beryl colored by chromium or vanadium. Emeralds have surface-reaching inclusions, so protective settings are recommended. Emerald engagement rings for Taurus are often paired with yellow or rose gold to enhance the stone’s green color.

Source: Stella Oval Emerald Engagement Ring

Stone Characteristics

• Composition: Beryl mineral colored by chromium or vanadium

• Hardness: 7.5–8 on the Mohs scale

• Notes: Often contains inclusions (“jardin”). Requires protective settings.
  

Gemini (May 21 – June 20) – Pearl Birthstone

The birthstone for Gemini is the pearl, formed inside mollusks. Pearls are softer than most gemstones and require gentle care. Pearl jewelry for Gemini includes rings, pendants, earrings, and even a pearl engagement ring, which makes a uniquely elegant and meaningful choice for those born under this sign.

Source: Mikaela Round Pearl and Diamond Ring

Stone Characteristics

• Composition: Organic gemstone made of calcium carbonate layers

• Hardness: 2.5–4.5 on the Mohs scale

• Notes: Sensitive to chemicals and scratching. Store separately from harder stones.

Cancer (June 21 – July 22) – Ruby Birthstone

The birthstone for Cancer is the ruby, a red variety of corundum. Rubies are durable and suitable for daily wear. Ruby engagement rings for Cancer often feature pear or marquise cuts to show color depth.

Source: Regina Natural Ruby Ring Set, Ruby Engagement Ringz

Stone Characteristics

• Composition: Corundum mineral colored by chromium

• Hardness: 9 on the Mohs scale

• Notes: May be heat-treated for color. Strong enough for daily wear.

Leo (July 23 – August 22) – Peridot Birthstone

The Leo birthstone is peridot, a gem-quality olivine. Peridot is found in volcanic rock. Peridot engagement rings for Leo can be set in white or yellow gold for a balanced look. Alternative birthstones include ruby and citrine, which are also associated with the Leo zodiac sign.

Stone Characteristics

• Composition: Olivine mineral, gem-quality variety

• Hardness: 6.5–7 on the Mohs scale

• Notes: Found in volcanic rock. Protect from hard impacts.
  

Virgo (August 23 – September 22) – Sapphire Birthstone

The Virgo birthstone is sapphire, a corundum variety available in many colors. Blue sapphire is the most common choice. Blue sapphire engagement rings for Virgo are valued for durability and color stability.

Source: Jolie Sapphire Diamond Ring

Stone Characteristics

• Composition: Corundum mineral, often blue but available in many colors

• Hardness: 9 on the Mohs scale

• Notes: Durable. Color comes from trace elements such as iron and titanium.

Libra (September 23 – October 22) – Opal Birthstone

The Libra birthstone is opal, known for its play-of-color. Opals are softer stones and need careful handling. Opal engagement rings for Libra often use protective bezels or halos to secure the stone.

Source: Karla Opal Ring

Stone Characteristics

• Composition: Hydrated silica with water content up to 20%

• Hardness: 5.5–6.5 on the Mohs scale

• Notes: Known for play-of-color. Keep away from heat and dryness.

Scorpio (October 23 – November 21) – Topaz Birthstone

The Scorpio birthstone is topaz, which is available in a variety of colors. It has good hardness but should be protected from strong impacts. A topaz engagement ring for Scorpios is available in blue, yellow, and imperial topaz shades.

Source: Tina Raw Blue Topaz Ring

Stone Characteristics

• Composition: Aluminum silicate with fluorine and hydroxyl

• Hardness: 8 on the Mohs scale

• Notes: Found in many colors. Can split if struck along cleavage planes.

Sagittarius (November 22 – December 21) – Turquoise Birthstone

The Sagittarius birthstone is turquoise, an opaque copper-aluminum phosphate mineral. It is often stabilized for jewelry. Turquoise jewelry for Sagittarius includes turquoise rings and beaded necklaces

Source: Margaret Oval Turquoise Ring

Stone Characteristics

• Composition: Hydrated copper and aluminum phosphate

• Hardness: 5–6 on the Mohs scale

• Notes: Often stabilized for durability. Keep away from chemicals.

Capricorn (December 22 – January 19) – Garnet Birthstone

The Capricorn birthstone is garnet, a group of minerals available in many colors. Red garnet is the most common. Garnet engagement rings for Capricorn are often paired with white diamonds for contrast.

Source: Janine Ring Garnet Ring with Diamond Clusters

Stone Characteristics

• Composition: Group of silicate minerals, often almandine or pyrope in red varieties

• Hardness: 6.5–7.5 on the Mohs scale

• Notes: Comes in many colors. Suitable for all types of jewelry.

Aquarius (January 20 – February 18) – Amethyst Birthstone

The Aquarius birthstone is amethyst, a purple quartz. It is durable and widely available. Amethyst engagement rings for Aquarius can range from light lavender to deep violet stones.

Source: Dora Amethyst Diamond Ring

Amethyst Stone Characteristics

• Composition: Purple variety of quartz

• Hardness: 7 on the Mohs scale

• Notes: May fade in strong sunlight over time.

Pisces (February 19 – March 20) – Aquamarine Birthstone

The Pisces birthstone is aquamarine, a blue to green-blue beryl. It is strong enough for everyday wear. Aquamarine engagement rings for Pisces are popular for their clear color and clean cuts.

Source: Sienna Gold Aquamarine Engagement Ring

Aquamarine Stone Characteristics

• Composition: Blue to blue-green variety of beryl

• Hardness: 7.5–8 on the Mohs scale

• Notes: Often heat-treated to remove green tones.