8 Best Coloured Stone Engagement Rings

8 Best Coloured Stone Engagement Rings
Some women dream of a traditional diamond solitaire, while others desire something bolder—a rare, expressive piece that tells a deeply personal story. Choosing a coloured gemstone engagement ring is a beautiful way to celebrate a love that refuses to be ordinary.
Unlike high-street jewellers who mass-produce thousands of identical rings using factory-matched stones, our exceptional gemstones are individually sourced from trusted, independent specialists who trace every gem back to its origin. No two stones are ever completely alike. Because each raw gem possesses distinct proportions and character, we custom-engineer every single setting to fit its specific stone perfectly. While handcrafting individual pieces is a meticulous process, it ensures unrivaled security and a truly bespoke piece of wearable art.
From vivid sea-blue aquamarines to rare colour-shifting treasures, these eight spectacular, one-of-a-kind engagement rings are available to view in our studio and purchase on our website right now.

Ring 1: The Pear-Cut Aquamarine & Platinum Ring

Aquamarine pear cut diamond platinum ring - Engagement Ring Christine Sadler

A breathtaking choice for an alternative proposal, this design takes inspiration from the calming waves of the sea. It is beautifully handcrafted to cradle the exceptional pear cut aquamarine securely.

  • Gemstone: 2.76ct Pear-Cut Aquamarine (13mm x 8mm)
  • Accents: 8 Round Brilliant-Cut Shoulder Diamonds (G Colour, VS Clarity)
  • Metal: Hallmarked 950 Platinum
  • Design Note: Features elegant castle-set diamonds flowing down each shoulder.
  • Price: £2,600

View or Buy the Aquamarine Pear Ring Online

Ring 2: The Trillion-Cut Rubellite "Sailing Stones" Ring

rubelite-trillion-diamond-ring

An absolute one-of-a-kind statement piece designed by Christine Sadler. This exclusive look features a magnificent, vibrant red tourmaline that commands attention.

  • Gemstone: 2.68ct Trillion-Cut Rubellite
  • Accents: 12 Round Brilliant-Cut Diamonds (6 hand-set in each shoulder)
  • Metal: 18ct White GoldDesign Note: The "Sailing Stones" setting balances a rubbed-over edge with a secure V-shaped claw for an eye-catching tension style.
  • Price: £3,950

Explore the Rubellite Slingshot Ring Details

Ring 3: The 2ct "Unforgettable Fire" Diamond & Ruby Ring

designer lab grown two carat diamond ring with rubies by jewellery designer Christine Sadler

The design takes the concept of fire, which is a gemmological term for the rainbow sparkles that flash from a diamond, and turns it into a love story. It starts with a spark, your connection, that is represented by the rubies set in the curving band that wrap around the finger in waves of heat.

side view of 2 carat unforgettable fire platium engagement ring showing three of the six rubies on a white background

These waves travel up to form platinum flames that hold the diamond.

Close up detail showing the platinum flames on the 2ct diamond engagement ring British hallmarked 950 platinum with Christine Sadler maker's mark

The design ends in a crescendo of "fire" in the form of sparkle from the centre stone.

Designed to tell a story of an everlasting connection, this magnificent piece captures the intense gemmological "fire" and rainbow flashes of a premium central stone wrapped in waves of heat.

  • Centre Gemstone: 2.00ct Certified Round Brilliant-Cut Diamond
  • Accents: 6 Vibrant Red Rubies set into the curving band
  • Metal: British Hallmarked 950 Platinum
  • Design Note: The platinum band wraps around the finger in sculptural waves that rise up to form elegant flames holding the centre diamond.
  • Price: £17,600

View the 2ct Unforgettable Fire Diamond Ring or arrange to view it in person at our studio in Ayr. 

Ring 4: The Vivid Pink "Moi et Toi" Lab Diamond Ring

Moi et Toi Lab Grown Diamond Ring with Pink Accent Diamond

A spectacular, completely unique take on the classic two-stone "Me and You" style. This romantic design represents two souls coming together in a flawless, snuggle-fit silhouette.

  • Gemstones: 2.87ct Total Weight (Bespoke Certified Vivid Pink Radiant-Cut Lab Grown Diamond paired with a classic Round Brilliant-Cut Lab Diamond)
  • Metal: Hallmarked 950 Platinum
  • Design Note: Features an interlocking, snuggle-fit profile engineered so a wedding band can sit completely flush against it.
  • Price: £4,500

Explore the Pink Moi et Toi Lab Diamond Ring

Ring 5: The "Fairypools" Scottish Blue Diamond Ring

scottish blue diamond engagement ring in yellow gold exclusively available from jewellery designer Christine Sadler inspired by the fairy pools on the Isle of Skye

A breathtaking, copyrighted design inspired by the magical Fairy Pools on the Isle of Skye. This artistic piece captures the image of cascading waterfalls tumbling into deep pools of blues and greens.

  • Centre Gemstone: Premium Mined Round Blue Diamond
  • Accents: White brilliant-cut diamonds bubbling down the shoulder
  • Metal: 18ct Yellow Gold (Also available in Platinum)
  • Design Note: A unique sculptural layout where the accent diamonds mimic the natural flow and bubbles of a crystal-clear Scottish stream.
  • Price: £9,700

Discover the Fairypools Fine Jewellery Collection

Ring 6: The Intense Pear-Shaped Tanzanite & Diamond Ring

one of a kind tanzanite and diamond engagement ring from jewellery designer Christine SadlerThis exclusive design showcases a rare, deeply saturated blue-violet tanzanite. Sourced from the only known deposit on Earth, its striking depth of color rivals the finest sapphires.

  • Centre Gemstone: 1.58ct Pear-Shaped Tanzanite (Deep, intense grade)
  • Accents: 2 Sleek Baguette-Cut Diamonds (0.18ct each)
  • Metal: 18ct White Gold
  • Design Note: A timeless three-stone layout where crisp, geometric diamond baguettes perfectly frame the organic curves of the central pear.
  • Price: £4,900

View the Pear Tanzanite & Diamond Ring Details

Ring 7: The True Colour-Change Alexandrite "Hearts On Fire" Ring

real Alexandrite heart cut gemstone platinum ring in a magenta pink colour under incandescent light, green in daylight, in a fire ring design with tiny flames around the heart cut gemstone and in the band wihich also has six round brilliant cut diamonds

heart cut natural real colour change Alexandrite gemstone ring in a teal colour in natural light in a hearts on fire unique design by Christine Sadler

A truly rare stone of duality. This natural, unheated heart-cut alexandrite possesses a mesmerizing optical phenomenon, shifting from cool teal in daylight to a vibrant magenta under evening candlelight.

  • Centre Gemstone: Natural Heart-Cut Colour-Change Alexandrite
  • Accents: 6 Round Brilliant-Cut Diamonds hand-set into the band
  • Metal: Hallmarked 950 Platinum
  • Design Note: A bespoke adaptation of our signature Hearts on Fire setting, featuring tiny sculptural flames that curve up into pointed claws.
  • Price: £5,500

Explore the Rare Alexandrite Heart Ring

Ring 8: The Princess-Cut Blue Sapphire "Tartan" Ring

tartan-engagement-ring-scottish-jewellery-designer

Inspired by the beautiful coastlines of the Isle of Bute, this striking design mimics a rock rising proudly out of a deep blue Scottish sea.

  • Centre Gemstone: 0.53ct Princess-Cut Diamond (Premium E Colour, VVS2 Clarity)
  • Accents: 10 Princess-Cut Rich Blue Sapphires
  • Metal: Hallmarked 950 Platinum
  • Design Note: The sapphires are arranged in a checkered, geometric Argyll pattern that forms a Saltire cross, giving it an unmistakable Scottish identity.
  • Price: £5,700

View the Tartan Collection Princess Diamond Ring

Commission a True One-of-a-Kind Heirloom

A coloured gemstone engagement ring is more than a beautiful accessory—it is an investment in provenance, rare natural artistry, and a personal love story. If a particular piece in this guide has captured your imagination, we invite you to explore its dedicated product page or book a private consultation at our Ayr studio to try it on in person.
If you have a specific, rare stone in mind that you do not see here, we can bring it to life for you. We work closely with our clients to source exceptional gemstones globally, guiding you through every step of our collaborative, stress-free custom jewellery process. Whether you are looking to create a statement piece or have a specific budget in mind between £2000 and £30,000, our expert design consultations are entirely complimentary.
Contact Our Ayr Studio to Begin Your Custom Journey or send us a quick message on WhatsApp at 07749890107 to chat directly with our Christine & Christopher today.

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