Natural freshwater cultured pearls are cultured in lakes and rivers from the species Hyriopsis cumingii in Asia and Amblema in North America and Northern Europe. In these species, a single shell can produce several pearls at once, sometimes even more than 20, being harvested after 2 to 6 years. The cultivation of freshwater pearls has been attested since the 13th century, with China currently being the world leader in production.
Stone type: Natural Smoky Quartz, Shape: Emerald, Color: Dark brown, Weight carat: 11.35, Treatment: Heated, Source: Brazil, Stone Clarity: Eye clean, Stone size mm: 16.20x12.10, Sale information: Price by piece
Stone type: Natural Smoky Quartz, Shape: Round, Color: Dark brown, Weight carat: 5.50, Treatment: Heated, Source: Brazil, Stone Clarity: Eye clean, Stone size mm: 9.90-10.00, Sale information: Lot price, Lot details: Pair for earrings
Stone type: Natural Topaz, Shape: Emerald, Color: White-Yellow, Weight carat: 3.70, Treatment: Untreated, Source: Pakistan, Stone Clarity: Visible inclusions and fractures, Stone size mm: 9.70x8.00, Sale information: Price by piece
Stone type: Natural Smoky Quartz, Shape: Round, Color: Dark brown, Weight carat: 4.40, Treatment: Heated, Source: Brazil, Stone Clarity: Eye clean, Stone size mm: 11.90, Sale information: Price by piece
Stone type: Natural Topaz, Shape: Round, Color: White, Weight carat: 0.03, Treatment: Untreated, Additional details: Hi quality stone, Source: Brazil, Stone Clarity: Eye clean, Stone size mm: 1.40, Sale information: Price by piece, Lot details: Similar color of stones
Product Name: Natural Tourmaline, Shape: Oval, Color: Dark Brown, Stone Dimensions mm: 11.60x9.00x6.20, Stone carat weight Weight: 3.85, Stone Clarity: No Visible Inclusions, Treatment: Untreated, Origin: Sri Lanka