Identifying Old and New Sources of Lapis Lazuli by GIA скачать в хорошем качестве

Identifying Old and New Sources of Lapis Lazuli by GIA

http://gia.edu/gem-encyclopedia Identifying Old and New Sources of Lapis Lazuli by GIA. The three major minerals that comprise lapis lazuli are lazurite, calcite and pyrite. Lazurite is the ingredient responsible for producing the prized lapis lazuli color—bright royal blue, or lapis blue. And have you ever wondered how to identify old and new sources of lapis lazuli? In this video, Sam Naseri discusses how after years of working with lapis lazuli, he’s learned about a procedure to help differentiate newer and older material. The video shows how high quality lapis pieces are used for jewelry, such as a lapis lazuli ring, and typically cut into cabochons, beads, inlays, or tablets. Interestingly enough, there are only two mines in the world where lapis lazuli can be found: one is in Chile, and the other Afghanistan. Learn more about lapis lazuli with GIA's gem encyclopedia: http://www.gia.edu/lapis-lazuli • Lapis Lazuli Quality Factors: http://www.gia.edu/lapis-lazuli-quali... • Lapis Lazuli Description: http://www.gia.edu/lapis-lazuli-descr... • Lapis Lazuli Buyer’s Guide: http://www.gia.edu/lapis-lazuli#buyer... • Lapis Lazuli History and Lore: http://www.gia.edu/lapis-lazuli-histo... • Lapis Lazuli Care and Cleaning: http://www.gia.edu/lapis-lazuli-care-... The Official GIA Channel on YouTube is also a great resource for lapis lazuli knowledge • Lapis Lazuli Composition and Color:    • Lapis Lazuli Composition and Color by GIA   • Examining Denim and Other Lapis Lazuli:    • Видео   • Buying and Polishing Lapis Lazuli From Afghanistan:    • Buying and Polishing Lapis Lazuli From Afg...   • Lapis Lazuli Mine Locations and Qualities:    • Lapis Lazuli Mine Locations and Qualities ...   GIA exists to connect people to the understanding of gems. Our videos provide more information on diamonds, gems, and other related topics • How to Choose a Diamond | GIA Diamond Grading Guide:    • How to Choose a Diamond: 10-Minute GIA Dia...   • How to Read a GIA Grading Report:    • How to Read a GIA Grading Report Video by GIA   • Sapphire and Ruby Mine in Palin, Cambodia:    • River Mining in Pailin, Cambodia, by GIA   • Mining for Emerald in Brazil:    • Mining for Emeralds in Brazil by GIA   • What Attracts Us to Ruby | History:    • What Attracts Us to Ruby: History by GIA   SUBSCRIBE TO OUR CHANNEL    / officialgiachannel   FOLLOW US Facebook:   / gia4cs   Blog: http://4csblog.gia.edu/ Twitter:   / gianews   Pinterest:   / giapins   Google Plus: https://plus.google.com/1076590629596...