《Yurakucho Marui 2024112 takeout》Brazilian color change Paraiba tourmaline 0.040ct loose stone (CuO: 1.8%, MnO: 1.5%) GIA

Paraiba tourmaline has an exquisite color that is different from the blue of the sea or the blue of the sky. Its definition in Japan is ``blue to green tourmaline (regardless of origin) that contains copper.'' It is a gemstone that is extremely popular. CuO: 1.8%, MnO: 1.5%. Batalha mine in Brazil.

Comes with a GIA certificate of authenticity and sorting by the Precious Metals Association.
*You can enjoy the color change between blue and green with white light and orange light, but generally only when the color changes from green to blue will it be described as a color change on the identification book. Therefore, this is the type that changes from blue to green, so the color change is not listed.

・Type: Loose (natural stone)
・Stone name: Paraiba tourmaline from Brazil
・Weight: 0.040ct
・Scratch/chip: S
・Inclusion: A+
・Note: Usually heated.
*Generally, Paraiba tourmaline is a gemstone that has been heated. With current identification technology, it is difficult to distinguish between heated and non-heated products, so the treatment is written as "Usually heated."
・Accessories: GIA (certificate of identification), sorting (Precious Metals Association), Karatz quality guarantee, loose case (if it does not fit, clear case with zip)

▷For more information about Paraiba Tourmaline
What is Paraiba Tourmaline? What are the characteristics and value differences depending on the region of production, and what is the selling price?


*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.

*Click here for information on scratches, chips, treatments, and inclusions.

*For other frequently asked questions, please click here .


karatz_item_id: 12547503