390g Raw Persian Turquoise Rough Stone – Lapidary Grade, Iran

This is a single raw turquoise specimen weighing 390 grams, sourced from Iran. The stone displays vivid sky-blue to medium-blue colouration across the majority of its surface, with natural tan and brown host rock matrix running through it. The texture is rough and unpolished throughout. It is suitable for lapidary work, cutting cabochons, or keeping as a display mineral specimen. Specimen Details Stone: Turquoise Weight: 390 Grams Dimensions: 75 × 80 × 45 mm Colour: Light Blue to Blue Shape / Form: Rough Loose (uncut, unpolished) Origin Country: Iran Type: Persian turquoise — the term refers specifically to turquoise mined in Iran, historically from the Nishapur region of Khorasan Province Authenticity & Treatment Authenticity: Genuine — 100% Natural, Earthly Mined Treatments: None — no stabilisation, no enhancement About Persian Turquoise Rough Turquoise is a copper aluminium phosphate mineral that forms in arid, copper-rich environments. Persian turquoise specifically refers to material mined in Iran — historically from the Nishapur mines in Khorasan Province, which have been a source of turquoise for thousands of years. At 390 grams and 75 × 80 × 45 mm, this piece offers sufficient mass for multiple cabochon cuts or can be kept whole as a display specimen. It has not been stabilised or treated in any way. FAQs What is the difference between raw turquoise and stabilised turquoise? Raw turquoise is untreated stone as it comes from the ground, with no resin or chemical hardening applied. Stabilised turquoise has been impregnated with resin to improve hardness and colour consistency for jewellery use. Where does Persian turquoise come from? Persian turquoise is mined in Iran, primarily from the Nishapur region of Khorasan Province. These mines have been producing turquoise for over 2,000 years and are among the most historically significant turquoise sources in the world. How many cabochons can be cut from a 390-gram turquoise rough? The yield depends on the distribution of colour and matrix within the stone. A 390-gram piece of this size (75 × 80 × 45 mm) can typically yield several small-to-medium cabochons, though the exact number depends on the lapidary’s cutting approach and the internal structure of the rough.