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$136.00 Tourmaline (Tri-color) 1.36 ct / Brazil $400.00 Tourmaline (Tri-color) 1.60 ct / Brazil $325.00 Tourmaline (Tri-color) 1.30 ct / Brazil $142.00 Tourmaline (Tri-color) 0.71 ct / Brazil $670.00 Tourmaline (Tri-color) 2.68 ct / Brazil $396.00 Tourmaline ("Indicolite") 2.64 ct / Brazil $394.50 Tourmaline 2.63 ct / Brazil $1,326.00 Tourmaline 4.42 ct ("Sunset Tourmaline") / Tanzania $1,317.50 Tourmaline (Bi-color) 5.27 ct / Brazil $333.25 Quartz with Trolleite Inclusions 13.33 ct / (very rare) / Brazil $217.80 Quartz with Trolleite Inclusions 7.26 ct / (very rare) / Brazil $135.20 Quartz with Trolleite Inclusions 6.76 ct / (very rare) / Brazil $229.20 Quartz 3.82 cts with Lazulite Inclusions / Madagascar $129.25 Quartz with Hematite Inclusions 5.17 ct / Madagascar $122.40 Quartz with Actinolite Inclusions 12.24 ct / Madagascar $83.75 Opal ("Fever Opal") 0.67 ct / Mexico $381.00 Fire Opal 3.81 ct / Jelly Opal / Idaho $186.00 Opal 1.86 ct (with Multicolor Flash) / Ethiopia $387.75 Opal 5.17 ct (with "Contra Luz" Color Flash) / Ethiopia $348.00 Friedelite (rare) 0.87 ct / New Jersey