Curious to know how a tanzanite is crafted exclusively for you? Well, the elaborate processes of planning, marking, preforming, bruting and polishing are all explained here in a very simple manner.
Tanzanite Manufacturing Process
1. Rough Tanzanite from Zoisite Mineral
In its Rough form, tanzanite is extracted from blue zoisite mineral. This mineral occurs in only one country in all world- Tanzania, in the foothills of Mt Kilimanjaro.
When the rough tanzanite extracted from the ground, its hardness is around 6.5- 7. When the rough tanzanite is extracted, its properties such as color, size, clarity, and cut are determined, to indicate its worth and value. Through a dynamic processing, optical and manual sorting system, rough tanzanite is prepared for its following stages.
2. Planning & Marking Tanzanite
The most crucial task in the creation of the perfect Tanzanite gemstone, this is where tanzanite nurtured at the hands of a skilled craftsman or a jeweler. The professional plans and decides, in consultation with the concerned owners, the cut, weight and carat of a precious gemstone. Tanzanite will then determine its market value. The tanzanite is now ready to be cut.
3. Making of Pre-form
Making of Pre-form is a simple process by which a rough tanzanite divided into desired marked pieces. This marking is the done perpendicularly or against the planes that the tanzanite rough needs to be the sawn i.e. 'cut.' As the rough tanzanite begins to get cut as per the marking process, one side of the stone is cut with a flat surface, called the table or flat central facet on top of the stone.
The orientation for further cutting and marking stone at this stage, the stone is referred to as a pre-form, and you can see what the final shape will be.
Once the process of pre-form is completed, the tanzanite stone is sent back to the planning and marking department for checking the results of procedures and then passed on to the next process of Bruting.
In the process of Bruting, Tanzanite’s girdle is formed. It is called rounding. The girdle is the surface which created around the thickest part of the stone. The stone again set in a 'dop', which is then fixed to the center of a lathe spinning at high speed. Using another tanzanite stone set in a long 'bruting stick', the corners of the rough stone are gradually rounded off until the spinning tanzanite is perfectly round at its thickest part. After this process, once again the quality check is done. If the tanzanite finds itself suitable, it moves on to the polishing department, the last of all processes.
When the tanzanite is polished, it also undergoes through faceting. Polishing is the art of giving the final touches to the tanzanite. This process also requires an enormous amount of concentration on the part of the jeweler- craftsman, as it here that the tanzanite given its much-required grandeur.
This step makes the tanzanite into a Faceted pieces. The last steps in the manufacturing process of the tanzanite from where on it goes to the grading department. The grading department is where the tanzanite receives its grading as per the GIA standards.