British Crown Jewels Gemstones: Complete Stone Guide

The Gemstones of the Crown Jewels

The British Crown Jewels contain thousands of individual gemstones — diamonds, sapphires, rubies, emeralds, pearls, amethysts, topazes, and more — each with its own history, symbolism, and place in the collection. This complete guide covers the most significant stones in the Crown Jewels, from the world-famous Cullinan Diamond to the controversial Koh-i-Noor, exploring their origins, their histories, and their healing and symbolic properties.

Diamonds: The Stars of the Collection

Cullinan I — The Great Star of Africa (530.2 carats) is the largest colorless cut diamond in the world, set in the head of the Sovereign's Sceptre with Cross. Cut from the 3,106-carat Cullinan rough diamond found in South Africa in 1905, it is a pear-shaped brilliant of extraordinary size and quality. Its presence in the sceptre — the symbol of royal power and justice — makes it the most symbolically significant diamond in the collection.

Cullinan II — The Second Star of Africa (317.4 carats) is set in the front band of the Imperial State Crown. A cushion-shaped brilliant, it is the second-largest colorless cut diamond in the world. Together, Cullinan I and II represent the most spectacular diamond cutting achievement in history — two extraordinary stones from a single rough crystal.

The Koh-i-Noor (105.6 carats) is one of the world's most famous and controversial diamonds. Its name means "Mountain of Light" in Persian, and its history stretches back to 14th-century India. The diamond passed through the hands of Mughal emperors, Persian conquerors, Afghan rulers, and Sikh maharajas before coming to Britain following the annexation of the Punjab in 1849. It is currently set in the Crown of Queen Elizabeth The Queen Mother and is displayed in the Jewel House. Its ownership is disputed by India, Pakistan, Afghanistan, and Iran.

The Cullinan III and IV were cut from the same rough diamond as Cullinan I and II. These two stones — a pear-shaped brilliant (94.4 carats) and a square brilliant (63.6 carats) — were set as a brooch for Queen Mary and are now part of the personal jewelry collection of the royal family rather than the Crown Jewels proper.

The Black Prince's Ruby: A Spinel in Disguise

The Black Prince's Ruby is one of the most historically significant stones in the Crown Jewels — and one of the most misnamed. This large red stone (approximately 170 carats in its rough form) set in the front cross of the Imperial State Crown is not actually a ruby but a red spinel — a different mineral species that was indistinguishable from ruby by pre-modern gemologists.

The stone's history is extraordinary. It was acquired by Pedro the Cruel of Castile in the 14th century and given to Edward the Black Prince (son of Edward III of England) in 1367 as payment for military assistance. It subsequently passed through the English royal collection, was reportedly worn by Henry V at the Battle of Agincourt in 1415, and has been part of the Crown Jewels ever since. Its long association with royal courage and military victory makes it one of the most storied stones in the collection.

Red spinel shares many of ruby's healing and symbolic properties — vitality, courage, protection, and the energizing power of red. In crystal healing, spinel is associated with renewal and revitalization, making the Black Prince's Ruby an appropriate stone for a crown that symbolizes the enduring power of the monarchy.

The Stuart Sapphire

The Stuart Sapphire — a large oval blue sapphire (104 carats) set in the back of the Imperial State Crown — has been part of the English royal collection since at least the 17th century. It is believed to have been part of the regalia of James II, who took it into exile when he fled England in 1688. It subsequently passed through various royal collections before being acquired by George IV and incorporated into the Crown Jewels.

The sapphire's deep blue color and its long association with the Stuart dynasty give it a melancholy beauty — a stone that has witnessed the fall of one royal house and the rise of another. Its healing properties of wisdom, truth, and spiritual clarity make it an appropriate stone for a crown that symbolizes the sovereign's responsibility to rule justly.

The Timur Ruby: Another Spinel

Like the Black Prince's Ruby, the Timur Ruby is actually a red spinel rather than a true ruby. This large stone (352.5 carats) is inscribed with the names of the Mughal emperors who owned it, providing a remarkable historical record of its ownership. It was presented to Queen Victoria in 1851 following the annexation of the Punjab and is now part of the personal royal collection rather than the Crown Jewels proper.

Sapphires: Blue Throughout the Collection

Beyond the Stuart Sapphire, the Crown Jewels contain numerous significant sapphires. The Imperial State Crown alone contains 17 sapphires, set throughout the crown in various sizes and cuts. The Sovereign's Ring — placed on the sovereign's finger during the coronation ceremony — contains a large sapphire set with a ruby cross, combining the wisdom of sapphire with the courage of ruby in a single symbolic object.

Ceylon (Sri Lankan) sapphires have historically been the most prized for royal use, their cornflower blue color considered the ideal. The sapphire in Diana's engagement ring — now worn by Catherine, Princess of Wales — is a 12-carat oval Ceylon sapphire, connecting the modern royal family to the finest tradition of sapphire use.

Emeralds: Green Fire in the Collection

The Crown Jewels contain 11 emeralds in the Imperial State Crown alone, along with emeralds in various other pieces. The Cambridge Emeralds — a suite of Colombian emeralds that have been in the royal collection since the 19th century — are among the finest emeralds in any royal collection, their vivid green color and exceptional clarity making them outstanding examples of the world's finest emerald source.

Colombian emeralds are prized above all others for their characteristic warm green color with a slight yellow undertone — the result of the specific geological conditions of the Colombian deposits. In crystal healing, emerald is associated with the heart chakra, promoting love, compassion, and emotional healing — properties that align with the stone's royal associations with hope and renewal.

Pearls: The Ocean's Gift to Royalty

Pearls appear throughout the Crown Jewels in extraordinary quantities — the Imperial State Crown alone contains 269 pearls. Historically, the finest pearls came from the Persian Gulf and from freshwater sources in Scotland and Ireland, both of which were part of the British realm. The association between pearls and British maritime power gave them a particular resonance in the royal collection.

Natural pearls — formed without human intervention in wild oysters — are now extremely rare and valuable, as overharvesting has depleted the wild oyster populations that produced them. The pearls in the Crown Jewels are among the finest surviving examples of natural pearl jewelry in the world.

The Healing Legacy of Crown Jewels Gemstones

The gemstones of the British Crown Jewels represent the accumulated gemstone wisdom of centuries — stones chosen for their beauty, their rarity, and their symbolic and healing properties, assembled into objects that express the highest aspirations of human civilization. For crystal healing practitioners, the Crown Jewels offer a window into the historical understanding of gemstone properties — a reminder that the healing traditions they practice have been recognized and honored by the most powerful institutions in human history.