Buying guide
A tanzanite purchase should be clear: color, treatment, weight, dimensions, cut, authenticity and final project. This guide helps compare stones without getting lost in gemological vocabulary.
Color
A heated stone is often sought for its clearer blue to blue-violet color. An unheated stone may be yellow, green, brown, gray, violet, dark brown or almost black.
Treatment
Heating is common in the tanzanite market and must be stated clearly. An unheated stone often attracts collectors, but requires an even more precise dossier.
Weight and dimensions
Two stones of the same weight can look very different depending on depth, cut and dimensions. Weight matters, but so do length, width and height.
Clarity
Inclusions are part of natural stones. What matters is whether they affect the beauty, durability or transparency of the stone.
Certification
Independent certification is useful for an important stone, an unheated stone or a piece intended for a collection. It adds time but strengthens the dossier.
Project
A collector stone is sometimes chosen for its rarity or natural character. A stone intended for a ring or pendant must also be considered for volume, orientation and durability.
Joyzanite summary
Joyzanite favors polished, checked stones presented with their essential information. Before buying, the client should be able to understand what they are looking at, why the stone has value and which certification or delivery options are appropriate.