Top 10 Rare Gemstones for Unique Engagement Rings

Engagement rings symbolise a special bond, a promise of a future together. We present you with the world of extraordinary gemstones, far beyond the traditional choice of diamonds. These rare gems are more than mere stones; they are emblems of a unique and profound love story, each with captivating charm and rarity. Perfectly for those looking for the best that fine jewellery can offer and once-in-a-lifetime commitments, this exploration ventures into the extraordinary beauty and distinct characteristics of these exceptional gems. It’s a tribute to love that dares to be different, celebrating the uniqueness of each bond with the rarest treasures of the earth.

Alexandrite: The Enchanting Color-Changing Gem

Alexandrite, with its remarkable color-changing ability, is a true marvel of nature. This gem shifts from a lush green in daylight to a rich red in incandescent light, capturing the essence of versatility and change. Its prices, ranging from £4,000 to £20,000 per carat, reflect its rarity and the intensity of its colour transformation. Alexandrite is more than just a stone; it’s a magical experience wrapped up in a gem.

Fun Fact: Alexandrite was named after the Russian Tsar Alexander II, with its discovery coinciding with his coming of age.

Paraíba Tourmaline: A Glimpse into Vibrant Neon

Paraíba Tourmaline is like capturing a piece of the ocean’s heart. Its neon blue/green hue is so vibrant it seems to light up from within. Valued between £5,000 to £30,000 per carat, the intensity and saturation of its neon colour are the true drivers of its value. This gem is for those who wish to wear a fragment of the ocean’s mystery on their finger.

Padparadscha Sapphire: The Delicate Peach-Pink Wonder

Padparadscha Sapphire is the embodiment of a sunset captured in a gem. Its delicate peach-pink hue whispers tales of romance and elegance. The price, ranging from £8,000 to £40,000 per carat, is a testament to its rarity and the enchanting allure of its colour. This sapphire is not just a stone; it’s a poem written by nature.

Demantoid Garnet: A Jewel of Vivid Green Brilliance

Demantoid Garnet is a symphony in green. Known for its vivid hue and high brilliance, it radiates a life and vitality unlike any other. Its value, lying between £2,000 and £10,000 per carat, is influenced significantly by its size and the dance of light within it. This gem is a celebration of life, perfect for marking new beginnings.

Kashmir Sapphire: The Deep Blue of Dreams

The Kashmir Sapphire is a journey into the depths of the ocean. Its deep, mesmerising blue is reminiscent of the deepest parts of the sea. Priced between £10,000 and £50,000 per carat, its rarity and the exceptional depth of its colour make it a prized possession. This sapphire is not just a gemstone; it’s an heirloom, a treasure of nature.

Red Beryl: The Fiery Gem of the Emerald Family

Red Beryl, a gem from the emerald family, is a fiery spectacle. Known for its vibrant red hue, it stands out with its unique colour. Valued between £1,500 to £7,000 per carat, its worth is dictated by its size and clarity. This gem is a symbol of passion, making it an ideal choice for those who want their engagement ring to reflect intense love and emotion.

Benitoite: The Exclusive Sky-Blue Treasure

Benitoite, a rare gemstone found only in California, glows with a captivating sky-blue colour. It’s priced from £500 to £2,000 per carat. Larger stones are exceedingly rare, making them more valuable. Benitoite is for those who cherish exclusivity and uniqueness in their love story.

Taaffeite: The Lavender-Colored Rarity

Taaffeite, known for its rare lavender colour, is a hidden gem in the world of gemstones. Its pricing, which ranges from £2,000 to £15,000 per carat, is influenced by its size, colour saturation, and clarity. This gem is perfect for those seeking a subtle yet distinct symbol of their commitment.

Musgravite: A Symphony of Unique Green Hues

Musgravite, a gemstone with an extraordinary green colour play, is both rare and enchanting. Priced between £1,000 to £5,000 per carat, its value lies in the intensity and complexity of its colour play. This gemstone is ideal for couples who appreciate the unique and the extraordinary in their journey together.

Ammolite: The Iridescent Beauty of Fossilised Shells

Ammolite, made from fossilised ammonite shells, displays an iridescent play of colours. Its pricing ranges from £500 to £3,000 per carat, depending on the size, pattern, and colour play. Ammolite is not just a gemstone; it’s a piece of Earth’s history, perfect for those who value timelessness in their relationship.

Where to commission an Engagement Ring with a Rare Stone?

In the renowned Hatton Garden, known for its exquisite bespoke jewellers, the possibility of commissioning a bespoke engagement ring with any of these rare stones becomes a reality. This famed area offers a unique opportunity to create a truly personalised symbol of love. However, the key to a successful experience lies in securing an appointment with a trustworthy jeweller. Renowned names such as Smith & Green Jewellers, Harpet Tait, Queensmith, Simon Lewis, and David Law Personal Jeweller stand out for their expertise and reliability. These professionals not only provide invaluable guidance in selecting the perfect gemstone but also ensure that the entire process, from design to creation, is handled with the utmost care and precision, making your engagement ring as unique and special as your love story.


The world of rare gemstones offers a spectacular array of choices for engagement rings, each with its own story and charm. From the fiery red of Red Beryl to the iridescent beauty of Ammolite, these gems provide a unique way to symbolise love and commitment. They are more than just adornments; they are symbols of a bond that is as rare and special as the gemstones themselves. Choosing one of these gems for an engagement ring is not just about making a statement; it’s about celebrating a unique love story in the most beautiful and rarest way possible.


  1. What makes these gemstones ideal for engagement rings? Their rarity and unique beauty symbolise special love stories.
  2. Are these gemstones more expensive than diamonds? Often, due to their rarity and unique characteristics.
  3. Can I find these gemstones in regular jewellery stores? They’re rare, so it’s best to consult specialist jewellers.
  4. Is Red Beryl part of the emerald family? Yes, it’s a vibrant red member of the emerald family.
  5. Does Taaffeite come in colours other than lavender? Primarily lavender, but variations can occur.