News • Dalloz stones & rough

The cutting process is done in 4 main steps. These steps can be done either manually or with the help of automated machines.

Crystal stones, a new expertise for Dalloz

For more than 100 years, Dalloz has made it a point of honor to innovate in order to meet customers’ requirements. Today we are extending our collections by offering you a new range of product: crystal. What is lead crystal made of ? Lead crystal or strass used in jewelry is a glass made of…

Zirconium oxide (CZ) and its synthesis process by autocreuset growth

Synthetic zirconium oxide differs from an artificial product (a man-made product with no known natural equivalent). This material can be qualified as synthetic because of its equivalent natural gem called baddeleyite. Cubic zirconium is synthesized using a unique process: autocreuset synthesis. Autocreuset growth In 1964, the technique of autocreuset synthesis was developed to manufacture synthetic…

Origin of gems’s coloring

Synthetic stones are known to have a very regular crystallization, which generally allows the stone to have good strength as well as an evenly distributed coloration. However, during manufacturing process of raw materials, certain elements can cause variations’ color, implying presence of several shades in the finished product. In order to understand color variations in synthetic stones, it is necessary to look at the origin of gems’ coloring.

Focus on… our quality control process

“Quality control is an essential step at Dalloz to provide customers with a quality product that meets their requirements.” Murielle G., Quality expert Our quality control is carried out in three stages, ensuring the excellence of our products throughout manufacturing process. 1ST step: evaluation of rough quality Dalloz is committed to select best raw materials…

Characteristics of gemstones : comparison between white topaz and white CZ

Natural stones and synthetic stones Fine and precious stones differ from synthetic stones in many ways. We generally look for perfection in synthetic stones. Being man-made, they can be cut, to achieve the perfect shape, the perfect color without any flaw. They can be produced in many colors, in many different shapes and in large…

Zirconia, referred to as CZ: the best alternative to diamond

Nowadays diamond is the hardest, the purest and the shiniest precious stone. It is also one of the rarest: the reason is its creation process which requires from 1 to 3.3 billion of years… Needless to say that since its discovery almost 5 000 years ago, humans never stopped looking for a reproduction of this exceptional material.