The product is a natural oval-shaped tourmaline, measuring 6.00x5.20 mm and weighing 0.75 carats. This gemstone stands out for its delicate and vibrant pink colour. The clarity of the tourmaline shows visible inclusions and fractures, giving it a distinct and authentic character. The stone has not undergone any treatment, thus maintaining its natural purity. The origin of this tourmaline is Pakistan, a region known for its high quality gemstones. This pink tourmaline is ideal for use in elegant jewellery, adding a sophisticated and unique look to any design. Each stone is carefully selected to ensure a high standard of quality and beauty.
Tourmaline (or tourmaline) is a semi-precious crystal with a variable chemical structure, a complex silicate of aluminium and boron. Instead of aluminium atoms, atoms of sodium, calcium, magnesium, iron, lithium, etc. can be substituted in various proportions, resulting in variations in the physical properties of the crystal. Tourmaline is one of the minerals with a trigonal crystallisation system. The chemical formula shows that hydroxyl ions (-OH) and fluorine ions (-F) can combine in different mixing ratios with metals, this mixture determining the colour and hardness of the mineral (between 7 and 7.5). Tourmaline colours are very varied, ranging from blue, green, red, pink, brown to black, sometimes one crystal can have more than one colour; in cross-section some crystals appear as an agate with concentric circular lines of different colour. Tourmalines often show the phenomenon of pleochroism, i.e. changing colour depending on the direction of observation. Another property of tourmaline crystals is piezoelectricity, which manifests itself in the electrical polarisation of the crystal as a result of a mechanical action (pressure or torsion) applied to a certain axis of the crystal. Most tourmaline varieties also exhibit pyroelectricity, i.e. the occurrence of electrical polarisation when the crystal is heated or cooled. Tourmaline is the first material in which these two properties have been observed. The term tourmaline came into Romanian from other European languages (German Turmalin, French tourmaline). However, the origin is the Sinhalese (the majority language spoken in Sri Lanka) word turamali, meaning 'stone that attracts ash', which reflects tourmaline's pyroelectric properties.
English
Română
