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$261.00 $348.00 Friedelite (rare) 0.87 ct / New Jersey $37.12 $49.50 Datolite 0.33 ct / New Jersey $43.87 $58.50 Datolite 0.26 ct / New Jersey $33.75 $45.00 Eudialyte (rare) 0.10 ct / Canada $242.44 $323.25 Montebrasite included with Boulangerite "needles" 21.55 ct / Locality - Brazil $135.00 $180.00 Creedite 0.15 ct / Kazakhstan $68.25 $91.00 Eudialyite (rare) 0.13 ct / Canada $260.62 $347.50 Wurtzite (rare) 1.39 ct / Tanzania $342.56 $456.75 Tourmaline (bi-color cat's eye) 6.09 ct / Brazil $114.75 $153.00 Rhodochrosite 0.51 ct / South Africa $166.50 $222.00 Bustamite (rare) 1.11 ct / South Africa $1,201.12 $1,601.50 Ametrine (natural bi-color Quartz) 32.03 ct / Bolivia $385.76 $514.35 Ametrine (natural bi-color Quartz) 11.43 ct / Bolivia $111.60 $148.80 Ametrine (natural bi-color Quartz) 3.72 ct / Bolivia $88.50 $118.00 Ametrine (natural bi-color Quartz) 2.95 ct / Bolivia $460.20 $613.60 Citrine (natural color) 15.34 ct / Brazil $205.05 $273.40 Gem Silica 13.67 ct / (Quartz / Chalcedony with Chrysocolla inclusions) / Peru $127.24 $169.65 Hyalite Opal (Opal-AN) 2.61 ct / ("Blood Vessel Opal") / Mexico $164.81 $219.75 Hyalite Opal (Opal-AN) 2.93 ct / ("Blood Vessel Opal") / Mexico $1,800.00 $2,400.00 Spinel (twin) on matrix / Locality - Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar (Burma)