Blog
From observation to creation: the world of CKYSTONES
Choosing a gemstone, understanding its characteristics, imagining a jewel and learning to observe: discover the activities that come together at CKYSTONES.
CKYSTONES at Expo Unique in the Netherlands, 3–6 December 2026
CKYSTONES participation confirmed. From Thursday 3 to Sunday 6 December, CKYSTONES will take part in Expo Unique in the Netherlands with a selection of fine and precious gemstones.
CKYSTONES in Neuilly: Designers and Artisans Fair, 27–29 November 2026
CKYSTONES participation confirmed. We look forward to seeing you in Neuilly-sur-Seine from Friday 27 to Sunday 29 November for three days of encounters centred on gemstones and creation.
CKYSTONES at the ING Gemstone Fair: 14 and 15 November 2026
CKYSTONES participation confirmed. Meet us at ING Paris to discover our world, talk about gemstones and tell us about your projects. The fair welcomes both professionals and the general public.
Corundum: an exceptional family of gems
Few minerals can claim to have given rise to two of the world's most famous precious stones. Yet ruby and sapphire are simply two faces of the same mineral species: corundum.
The beryl family: crystalline elegance
When we think of great precious stones, emerald naturally comes to mind. Yet few people know that this gem, together with morganite, heliodor, goshenite, aquamarine and the very rare red beryl, belongs to a single mineral species: beryl.
Daniel Brush: when light becomes matter at L’École des Arts Joailliers
Daniel Brush: when light becomes matter at L’École des Arts Joailliers
Garnet: diversity, history and mineral brilliance
A gemstone cherished by mineralogists and jewellers alike, garnet is one of the most varied and fascinating minerals in the mineral kingdom. Behind a single name lies a whole family of gems with extremely diverse compositions, colours and origins.
Blue Mellon: an exceptional blue diamond at the heart of the gemstone market
The Mellon Blue is an exceptional blue diamond weighing 9.51 carats, graded Fancy Vivid Blue by the GIA and with flawless clarity, pear-cut and currently set in a ring. Its rarity and quality make it one of the most sought-after stones. It was offered at auction on 11 November 2025 at Christie's Magnificent Jewels sale in Geneva, with an estimate of between 20 and 30 million dollars.
Zoisite: a gem of many facets
Zoisite is a fascinating mineral which, although understated in its rough form, reveals a palette of vibrant colours once cut. From blue-violet tanzanite and pink thulite to green anyolite flecked with ruby, this stone embodies mineralogical diversity.
