Enhancing Diamond Colour by Irradiation
Diamonds for gem use are colourless in general, but some stones with bright colours are highly valued as fancy colour diamonds. The body colour of diamond depends on the concentration of nitrogen and the form of aggregation. Structural defects and vacancy bonding may also cause colour centres. Furthermore, plastic deformation may bring about colour. Recently, artificial colouring to intentionally produce “fancy colour” stones has been carried out in a commercial basis. The combined process of electron beam irradiation with annealing and the high-pressure high-temperature (HPHT) process are quite common treatment techniques today.
Colour enhancement of precious stones
To impart/enhance the colour in precious stones like diamonds and topaz, the accelerator process parameters and the irradiation system have been standardized. EB irradiation service for diamond coloration is offered on a commercial basis.
Cromwell E-beam solutions LLP. Color enhanced Radiation crosslinking Product development
Cromwell E-beam solutions LLP. has built its competitive advantage by strengthening its ability to offer a wide variety of diamonds, all manufactured with an extremely high level of precision in terms of cut, finish and symmetry. This commitment to provide our customers with the best has ensured that we set high standards for our products in terms of quality and consistency
- Advanced color customization
- Build and customze stunning diamonds
- Helping you to increase your diamond color
Cromwell E-beam Solutions LLP. has successfully developed an innovative clean process to change 100% natural and CVD diamonds to fancy colour – making them even more stunning than they already were, We offer our customers a wide spectrum of colours such as: Pink, Yellow, Blue, Orange, Green, Cognac, Red and Black. By that we allow you to enter an infinite world of jewellery designs -full of endless possibilities.
Natural fancy diamonds are very expensive and out of reach therefore colour enhanced diamonds can be a great alternative for natural fancy colour diamonds, Our collection of natural diamonds that have been carefully hand selected, heated, and polished to bring out each diamond’s beautiful colour.
Enhancing Diamond Colour by Irradiation High-Pressure High-Temperature
The irradiation with Electron beam causes changes in the crystal lattice of precious stones and other solids. This allows specific colour changes in gemstones for aesthetic purposes. Glass, pearls and other materials can also be irradiated for such purposes.
Cromwell E-beam Solutions LLP. have Electron Beam Facility, we color our diamonds at our own facility at Surat. Electron Beam Processing is the method for producing chemical and physical changes in various substances by exposure to ionizing radiation in the form of energetic electrons. Electrons are particles possessing a negative electric charge, which is an integral part of every neutral atom. During this process several different effects may occur depending on the material being processed, the dose or amount of treatment that is being applied. These effects include but are not limited to Cross linking, Polymer Degradation, Sterilization, Pasteurization, and Vulcanization. E-Beam differs from other radiation processes in that it is highly controllable, and can be turned completely off with no residual effects.