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LOT 2758
Natural History - Historic 'Spencer Opal Mine, Idaho, U.S.A.' Opal Mineral Specimen
3 3/8 in. (163 grams, 87 mm).
A milk-opal variety displaying iridescent white colour; purchased for £65.00 from Gregory, Bottley & Lloyd, in the 1980s, with an old label. [No Reserve]
ProvenanceAcquired on the UK mineral and fossil market, since 1970.
From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent.
Accompanied by an original historic index file card.
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AUCTIONS:
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LOT 2758
Natural History - Historic 'Spencer Opal Mine, Idaho, U.S.A.' Opal Mineral Specimen
Sold for (Inc. bp): £390
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Natural History - Historic 'Zimbabwe' Emerald in Quartz Specimen
Sold for (Inc. bp): £39
Displaying vivid green emerald inclusions in greyish white quartz, collection number 415, with an old Gregory, Bottley & Lloyd label. 50 grams, 42 mm
Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Accompanied by an original historic index file card. -
![Natural History - Quartz Rock Crystal Specimen Group [100]](https://timelineauctions.com/upload/images/items/small/211363-s.jpg)
Natural History - Quartz Rock Crystal Specimen Group [100]
Sold for (Inc. bp): £33
Comprising a large quantity of white to clear prismatic crystals, some in matrix. 1.36 kg total, 25-41 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Historic 'Tanzania' Ruby Chrom-zoisite Mineral Specimen
Sold for (Inc. bp): £59
Displaying vivid emerald-green, ruby-red and greyish black colours, collection number 381. 140 grams, 76 mm
Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Accompanied by an original historic index file card.
This form of ruby zoisite can only be found in Tanzania.
