In some stones, the treated color penetrates the entire stone, while in others there’s very shallow penetration.

Stones that have undergone lattice diffusion treatment have varying degrees of treated-color penetration. Untreated and even heat-treated sapphire is very durable. Fracture-filled, cavity-filled, or dyed material should only be cleaned with a damp cloth. Ultrasonic and steam cleaners are usually safe for untreated, heat-treated, and lattice diffusion treated stones. Fracture-filled, cavity-filled, and dyed stones can be damaged by even mild acids like lemon juice. Boric acid powder will etch the surface of even untreated stones. Sapphire ranks 9 on the Mohs hardness scale.Ĭorundum is stable under normal wearing conditions, which means it’s resistant to the effects of heat, light, and common chemicals. It is wise to use your own knowledge about your growing conditions and local environment in order to make informed cultural decisions.Comprehensive CAD/CAM For Jewelry Certificate This information is for guidance purposes only and is based upon our own growing environment and experience during trials. Growing media and pH – Is shown for guidance purposes only - please contact your growing media consultant for suitable growing media to meet your requirements.

This choice will depend on your conditions, requirements and preferences – please contact your fertiliser consultant for suitable products to meet your requirements. Recommended growing is generally above 5☌.įeeding – Does not specify controlled release or liquid fertiliser application. Temperature – These conditions assume a protected ornamental growing environment. For alternative pot sizes please adjust cultural notes accordingly.įinishing times - Based on average estimated climatic and environmental conditions, and are for guidance purposes only. All information provided is based on producing a default finished pot size of 1L for our plug products, and 2L for 7cm and 9cm liner products.

Sapphire jewels