Measuring Range: -50~420°C/-58~788°F
5 Sources: The most famous source of fire opals is the state of Querétaro in Mexico
Built-in diamond and simulant test discs for reference
Vallorbe 1360 - Swiss Made - Invest in the Best
Stainless steel arms
5.90ct Oval Cabochon Tourmaline 15.8x8.1mm Rotary Pendulum Drive Unit (Gold Pendulum) Measuring Range: -50~420°C/-58~788°FTourmalines are found in a wide range of colours, pink, green, blue, orange, yellow, brown, black, and colourless. Bi coloured Tourmalines are also common and stones which are coloured pink to green are known as watermelon tourmaline. Tourmalines can also display cat's eye chatoyancy, which is caused by parallel fibres running through the stone.; Tourmaline is found in many countries including Madagascar, Brazil, USA, Burma, Sri Lanka, Botswana and