Natural History - Gem Quality Precious Opal Group

A group of six pieces of gem-quality, white-base opal, from Australia, with red, blue, and green fire. Found Australia; from the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd

A sawn block of red-brown sandstone, polished on two sides, with areas of precious opal diffracting light in primarily purples, blues and greens, in white card tray. See Bonewitz, Dr. Ronald Louis, Ro

A fine, transparent, gemmy crystal of dioptase with smaller side crystals, in plastic display box. From Namibia; From the historic ‘Victorian Museum’ and later collection of Gregory, Bottley & Llo

Both published "London. Bell & Daldy, York Street Covent Garden 1870". "The Natural History of Gems or Semi-Precious Stones" and "The Natural History of Precious Stones and of the Precious Metals". To

A group of ten one-off polished malachite mineral specimens of good quality malachite. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.184. 119 grams total, 25-46mm (1/4 - 1 3/4"). From the

A group of fifty marquise cut green tourmaline gems. From the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregory, Bottley & Co. (1932-1981) a

Gemstones: Natural Pink Fire OpalCarat Weights: 3.60 ct Size/Dimensions: 14 X 9 X 6 mmTreatment: Heated

Gemstones: Natural Pink Fire OpalCarat Weights: 4.30 ct Size/Dimensions: 13.90 X 10.20 X 6.60 mmTreatment: Heated

Title: 2.15 CTS NATURAL ETHIOPIAN WELO OPAL OVAL GOOD LUSTER GEMS STONES Carat Weights: 2.15 Size/Dimensions: 10.5 x 8.0 x 4.7 MM Additional Information: VVS QUALITY UNHEATED Reserve: $25.00 Shipping:

14K yellow gold. High-quality diamonds & Ruby ring. Marquise cut Ruby and Round brilliant cut diamonds. All precious stones set in prongs

Natural Cabochon Opal - 12.13 ct. - 2 Pieces, Color - Opaque White, Shape - Oval Cut, Dimension - 10 x 11.5 x 5 & 19.4 x 11.5 x 6.0 (mm), Good Quality With Luster.

Natural Opal Beads Necklace - 226.16 ct. , 4 Line, Color - Creamy White , Cabochon Cut Round Shape Beads , Standard Size Necklace , Good Quality with luster.

Natural Opal Beads Necklace - 100 ct. , 2 Lines , Standard Size Necklace , Facet Cut Beads , Good Quality with Luster.

Natural Opal Beads Necklace - 89 ct. , 2 Lines , Standard Size Necklace , Facet Cut Beads , Good Quality with Luster.

This Necklace features Genuine & Natural Opal Plane Rondelles Beads. The gemstone beads are strung on high quality beading wire and the Necklace closes with a 92.5 Sterling Silver lobster clasp. All m

This Necklace features Genuine & Natural Opal Plane Rondelles Beads. The gemstone beads are strung on high quality beading wire and the Necklace closes with a 92.5 Sterling Silver lobster clasp. All m

This Necklace features Genuine & Natural Opal Plane Round Beads. The gemstone beads are strung on high quality beading wire and the Necklace closes with a 92.5 Sterling Silver lobster clasp. All metal

This Necklace features Genuine & Natural Opal Plane Rondelles Beads. The gemstone beads are strung on high quality beading wire and the Necklace closes with a 92.5 Sterling Silver lobster clasp. All m

This Necklace features Genuine & Natural Opal Plane Rondelles Beads. The gemstone beads are strung on high quality beading wire and the Necklace closes with a 92.5 Sterling Silver lobster clasp. All m

This Necklace features Genuine & Natural Opal Plane Round Beads. The gemstone beads are strung on high quality beading wire and the Necklace closes with a 92.5 Sterling Silver lobster clasp. All metal

This Necklace features Genuine & Natural Opal Plane Rondelles Beads. The gemstone beads are strung on high quality beading wire and the Necklace closes with a 92.5 Sterling Silver lobster clasp. All m

This Necklace features Genuine & Natural Opal Plane Rondelles Beads. The gemstone beads are strung on high quality beading wire and the Necklace closes with a 92.5 Sterling Silver lobster clasp. All m

Weight - 4.95 Ct / Size - 13.21 x 10.10 x 6.51 mm/ Top Quality Luster / IGI Certified / Excellent Oval Cabochon / Origin - Ethiopian / Treatment - None / Certificate No : 389974957

Natural Opal Beads Necklace - 59 ct. , 1 Lines , Standard Size Necklace , Facet Cut Beads , Good Quality with Luster.