Star Astra Birthstone Signet Ring in Sterling Silver

The Astra Collection features our signature hexagon-faced signet rings with knife-edge bands and a high-polished finish that embodies modern sophistication. Choose the personalization that suits you: the classic blank signet, star-set versions with birthstones, or engraved rings with a single initial in block or script lettering. These substantial, geometric rings pair perfectly with pieces from our Fragments Collection, representing the perfect balance of contemporary design and timeless appeal.

Birthstone: January

Anniversary: 2nd

With over 5,000 years of human history, garnet has adorned jewelry from ancient Egyptian pharaohs to Roman nobility. The name comes from Latin "granatus," meaning "seed-like," inspired by the deep red pomegranate seeds that mirror this gem's most beloved hue. While traditionally known for rich crimson tones, garnets actually span a beautiful spectrum including forest greens, warm oranges, and dramatic blacks.

This remarkable stone represents trust, eternal friendship, and positive energy. Ancient cultures believed garnets offered protection and vitality, making them perfect talismans for travelers and warriors. Today, garnets continue to symbolize deep emotional bonds and creative inspiration, perfect for pieces that carry personal meaning and everyday elegance.

Birthstone: March

Anniversary: 19th

Named from the Latin "aqua marina" meaning "water of the sea," aquamarine captures the essence of ocean depths in its crystalline blue depths. Part of the beryl family alongside emerald and morganite, this gem was first documented in 1677 and has since been discovered worldwide—from Brazil's mines to Madagascar's shores. It's also Colorado's official state gemstone, celebrating the clear mountain lakes that mirror its pristine color.

Ancient Romans believed Neptune discovered aquamarine when it fell from sirens' jewel boxes, and sailors have worn it for centuries as protection against seasickness. Associated with courage, happiness, and wisdom, aquamarine is also the traditional 19th anniversary stone, believed to enhance marital joy. Its cool, calming presence makes it perfect for pieces that evoke serenity and timeless beauty.

Birthstone: February

Anniversary: 6th

The name amethyst derives from the Greek "amethystos," meaning "not intoxicated"—ancient Greeks believed this stunning purple gem could protect against overindulgence. Ranging from delicate lilac to rich violet, amethyst has been treasured by royalty throughout history as a symbol of power and luxury. Tibetan Buddhists consider it sacred, often incorporating it into prayer beads, while ancient Egyptians carved protective amulets from its crystalline beauty.

Known for fostering emotional balance and spiritual awareness, amethyst's serene purple hues are associated with tranquility and protection against negative energies. This makes it an ideal choice for jewelry that's both beautiful and meaningful—pieces that bring a sense of calm elegance to your everyday style.

Birthstone: May

Anniversary: 20th, 35th

One of the "big four" precious gems alongside diamond, ruby, and sapphire, emeralds are actually rarer than diamonds. These stunning green gems are part of the beryl family and date back an incredible 2.97 billion years, with the first known mining occurring in Egypt around 1500 BC. The Duke of Devonshire Emerald, the largest uncut specimen, weighs an impressive 1,383.93 carats and showcases the gem's natural magnificence.

Derived from the Greek "smaragdus" meaning "green gem," emeralds were treasured by Cleopatra and various indigenous cultures of Central and South America. Traditionally believed to enhance intuition and guard against memory loss, emeralds were even thought to boost clairvoyance when placed under the tongue. Their verdant beauty and rich history make them perfect for pieces that celebrate nature's artistry and timeless elegance.

Birthstone: April

Anniversary: 10th, 60th

From the Greek "adamas" meaning "unconquerable," diamonds truly live up to their name as the hardest natural substance on Earth. Formed over 100 miles below the surface through immense pressure and heat, these nearly pure carbon crystals rank a perfect 10 on the Mohs scale. The legendary Cullinan diamond, discovered in South Africa in 1905, weighed an astounding 3,106 carats and was cut into nine magnificent stones now adorning the British Crown Jewels.

Ancient Romans believed diamonds were tears of gods or fragments of falling stars, with Cupid's arrows tipped in their brilliance. Medieval cultures thought they could cure everything from fatigue to mental illness. Today, diamonds continue to represent eternal love and unbreakable bonds, perfect for heirloom pieces that celebrate life's most precious moments with unmatched sparkle and durability.

Birthstone: June
Anniversary: 3rd

Known for its mesmerizing "adularescence"—that ethereal light that seems to dance across its surface—moonstone was named by Roman historian Pliny, who believed its appearance changed with the moon's phases. Found in dreamy whites, warm peaches, sophisticated browns, and grays with rainbow flashes, the finest specimens show enchanting blue flashes that seem to glow from within. Primarily mined in India and Sri Lanka, with additional sources in Brazil and Madagascar, each stone captures light in its own magical way.

Hindu mythology claims moonstone is composed of solidified moonbeams, connecting it to Roman and Greek lunar deities throughout history. This gem's otherworldly beauty makes it perfect for pieces that celebrate the mysterious and feminine—jewelry that seems to hold captured starlight and brings an element of celestial wonder to everyday wear.

Birthstone: July

Anniversary: 15th, 40th

Known as "Ratnaraj" or "king of gems" in Sanskrit, ruby's name derives from Latin words meaning red—the only red variety of corundum, while all other colors are classified as sapphires. The finest specimens come from Myanmar's legendary mines, while Thailand produces rubies noted for their superior clarity and deep red coloring. This precious gem has captivated cultures worldwide with its fiery brilliance and symbolic power.

Associated with passion, good luck, and personal inspiration throughout history, medieval Europeans believed rubies brought wisdom, wealth, and success in matters of love and health. Their intense red hue symbolizes the heart and life force, making them perfect for pieces that celebrate deep emotions and powerful connections—jewelry that carries the energy of love and courage.

Birthstone: August

Anniversary: 16th

One of only two gems formed in Earth's mantle and brought to the surface through volcanic activity (the other being diamond), peridot holds a truly unique origin story. Known in Hawaii as the tears of Pele, the volcano goddess, this gem has even been found in meteorites and stardust—literally connecting us to the cosmos. Always naturally green due to its composition as gem-quality olivine, peridot was historically confused with emerald, notably in Cologne's famous Shrine of the Three Kings.

Ancient Egyptians called peridot the "gem of the sun," and it remains Egypt's national gem today. The name derives from Arabic "faridat" meaning "gem," and it's traditionally believed to protect from nightmares and calm anger. Its sunny green hue and celestial connections make it perfect for pieces that celebrate optimism, natural beauty, and our connection to both Earth and sky.

Birthstone: September

Anniversary: 5th, 45th

Part of the corundum family, sapphires occur in every color except red (which are rubies), from the classic cornflower blue to vibrant pinks, sunny yellows, and everything in between. Notable sources include Southeast Asia, Australia, Africa, and Montana, USA, where some of our favorite stones originate. Some specimens exhibit "asterism," creating a moving star effect that seems to dance across the surface: a truly magical phenomenon that adds extra wonder to these already captivating gems.

Ancient Persians believed Earth rested on a giant sapphire, creating the sky's brilliant blue color. Medieval clergy wore sapphires to represent Heaven and believed they could cure plague and eye diseases. The gem gained renewed fame through Princess Diana's iconic engagement ring, cementing its place as a symbol of wisdom, loyalty, and noble beauty, perfect for pieces that celebrate both everyday elegance and life's most precious moments.

Birthstone: October

Anniversary: 8th

First recorded in 1554 but confused with emerald until the 1800s, tourmaline's name originates from the Sri Lankan "toramalli" meaning "stone with mixed colors," perfectly describing this gem's incredible spectrum. Tourmaline appears in virtually every color imaginable: vibrant pinks and roses, deep forest greens, electric blues, sunny yellows, rich purples, watermelon varieties that blend pink and green, and even rare neon Paraiba blues. What makes tourmaline truly fascinating is its unique electrical properties: it becomes charged through heating (pyroelectric) or friction (piezoelectric). The famous "Caesar's Ruby" in the Russian crown jewels was later identified as rubellite tourmaline, showcasing how this gem's beauty has fooled even royal gemologists.

Associated with enhancing artistic creativity (likely due to its vast spectrum of colors), tourmaline brings a sense of joy and inspiration to any piece. Its incredible color range means there's a perfect tourmaline for every personality and style, making it ideal for jewelry that celebrates creativity, self-expression, and the beauty of thinking outside the box.

Birthstone: November

Anniversary: 13th

A sunny yellow variety of quartz, citrine gets its name from the French "citron" meaning "lemon"—perfectly capturing its cheerful, golden hues. Found primarily in Bolivia, Spain, Madagascar, Mexico, Brazil, and Uruguay, this gem was historically known as the "merchant's stone" or "money stone," carried by traders who believed it would bring prosperity to their business ventures.

Medieval merchants weren't wrong about citrine's positive energy—its warm, golden color naturally evokes feelings of abundance, joy, and success. Perfect for pieces that celebrate optimism and personal achievement, citrine brings sunshine to any jewelry collection with its bright, uplifting presence and accessible beauty.

Birthstone: December

Anniversary: 24th

Discovered only in the 20th century, tanzanite is exclusively mined near Mount Kilimanjaro in Tanzania's Merelani Hills—making it one of the world's rarest gems, found in only one location on Earth. Introduced to the world by Tiffany & Co., this remarkable gem exhibits pleochroism, showing different colors when viewed from different angles. Most specimens are heat-treated to enhance their signature blue-violet colors over their natural yellow-green or brown hues.

Associated with spiritual awareness and transformation, tanzanite has quickly become a modern symbol of luxury and rarity due to its single-source location. Its deep blue-violet hues seem to hold the mystery of African twilight skies, making it perfect for pieces that celebrate uniqueness, transformation, and the beauty of discovering something truly extraordinary.

This ring sits close to your finger but does not have flat sides for traditional stacking. To wear this piece with other rings, you'll need a contoured band that curves around its shape or a custom-fitted ring.

One complimentary resizing included with your purchase.

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