Your Source For Fine Mineral Specimens

Filter By

Amethyst (deep color)
Anahi, Bolivia
39.02 ct, 25.87 mm x 19.67 mm
Ring, Zircon (rich color) in Sterling Silver (desinged and made by Brett Kosnar)
Cambodia (Zircon)
2.33 ct (stone), Ring Size = 7
Tourmaline (unique color) (cut by Brett Kosnar)
Tanzania
5.65 ct, 11.92 mm
Fluorite (hard to find material)
Morocco
16.68 ct, 19.42 mm x 14.38 mm
Earrings, Diamonds in 14 kt Yellow Gold
Africa
3.00 mm approx each (Diamonds), N/A
Ring, Emerald and Diamonds in 10kt Yellow Gold
Various Localities
5.07 x 2.60 mm (Emerald), Ring Size = 6
Ametrine (beautiful cutting!) (cut by Allyce Kosnar)
Anahi, Bolivia
6.37 ct, 12.22 mm
Pendant and Earrings, Drusy Cobaltoan Calcite in Sterling Silver (Made by Brett Kosnar)
Katanga, Congo
40.0 (total carat weight), 16 mm x 13 mm (pendant); 15.6 mm (earrings)
Fire Opal (cut by Allyce Kosnar)
Mexico
5.05 ct, 12.27 mm
Ring, Tanzanite and Diamonds in Sterling Silver (designed and made by Brett Kosnar)
Tanzania
0.75 cts; 6.2 mm (Tanzanite gem), Size = 7.75
Chrysoberyl
Sri Lanka
2.82 ct, 9.62 mm x 7.60 mm
Ring, Purple Spinel in Sterling Silver (designed and made by Brett Kosnar)
Burma
2.20 ct (Spinel), Ring Size = 5
Scapolite
Tanzania
4.73 ct, 13.69 mm x 10.52 mm
Pendant, Aquamarine in Sterling Silver (made by Brett Kosnar)
Mozambique
2.46 ct; 9.93 mm x 8.05 mm (stone), 41.00 mm long (pendant)
Sapphire
Sri Lanka
1.28 ct, 7.77 mm x 5.92 mm
Ametrine Carving, Skull
Anahi, Bolivia
394 ct!!, 48.6 mm x 36.9 mm x 31.2 mm
Superb Amethyst - 2 movable bubbles (Charlie Key)
Goboboseb Mts., Brandberg, Erongo Region, Namibia
6.5 x 2.8 x 1.5 cm
Rhodochrosite
Argentina
90.28 ct!, 34.90 mm
Pendant, Emerald in Sterling Silver
Colombia
0.50 ct (stone), 18 inch chain included
Spessartine Garnet (Mandarin Garnet)
Nigeria
0.52 ct, 5.12 mm x 4.14 mm
Blue Topaz (natural color)
Brazil
2.26 ct, 8.95 mm x 7.07 mm
Quartz with Hematite inclusions
Brazil
1.58 ct, 8.08 mm x 6.85 mm
Moonstone (Face)
India
4.39 ct, 10.21 mm
Seraphinite (Clinochlore)
Korshunovskoye, Siberia, Russia
16.18 ct, 19.88 mm x 15.01 mm
Tourmaline
Brazil
0.42 ct, 5.60 mm x 3.98 mm
"Prasiolite" (Green Quartz)
Brazil
1.94 ct, 7.95 mm
Tourmaline
Brazil
0.31 ct, 5.76 mm x 3.07 mm
Zircon
Tanzania
0.74 ct, 5.15 mm
Spinel
Burma
0.40 ct, 5.12 mm x 4.11 mm
Imperial Jasper
Mexico
24.58 ct, 34.63 mm x 19.08 mm