Firooz Nishaburi Iranian, 5.675 carats

Technical details: Type: Persian Neshaburi Iranian (Turquoise) Weight: 5.675 carats Shape: Cabochon Color: Persian Sky Blue Clarity: Unclassified (Uncategorized) Transparency: Opaque Hardness: 5.0-6.0 Treatment: Untreated Origin: Persian Neshaburi Certification: Electronic certificate (PDF) from Saudi Laboratory (MT) - website (www.mtgl.com.sa) Turquoise is characterized by its bright and pure sky blue color, which is often free of impurities or brown/black veins (known as "matrix"), or may contain few thin veins of iron oxide or limonite that enhance its beauty. It is known for its good hardness and ability to retain its distinctive blue color for long periods.