from the Kay Robertson Mineral Collection
ends Tuesday June 25th, 2019

NOTE SPECIAL END DAY: TUESDAY June 25, 2019at 6:30 PM (Central Time Zone)!
The Kay Robertson collection has thus far afforded a great deal of intellectual and mineral pleasure to us here at The Arkenstone, as well as collectors around the globe. Many specimens are of historical and mineralogical interest, so working with them has been a truly gratifying experience.We thought it would be a fun change of pace to produce a totally dedicated "Kay Auction," and let things go where they may. Please note that a number of these specimens were purchased by Kay 50-60 years ago, at prices that ranged from several dollars to several hundreds of dollars at the time. If these were the prices a half-century ago, just imagine what the possible values are now. There might be some real bargains to be had! Text and photos by collector, Jeff Starr.
For those unfamiliar with the Kay Robertson Collection,
Kay is a prominent California collector who specialized in European classics (see our blog at www. https://www.irocks.com/kay-robertson-a-treasure-in-the-mineral-collecting-world ; and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017).
Happy hunting!
Rhodochrosite and drusy Calcite - historic locality!
Sacaramb, Deva, Hunedoara, Romania
9.6 x 7.2 x 3.8 cm
Winning Bidder: vanguardmellophone
Eugui, Esteribar, Navarre, Spain
6.2 x 4.3 x 3.4 cm
Winning Bidder: dormrat
Calcite (fluorescent)
Florida, USA
5.4 x 5.2 x 4.1 cm
Winning Bidder: palytoxin
Topaz and Opal (var. Opal-AN) (fl)
Artroyos Mine, Potrillos, Durango, Mexico
2.8 x 2.0 x 1.4 cm
Winning Bidder: whisper
Harmatome xls on Calcite (fl) on Amethyst
Setz Quarry, Idar-Oberstein, Rhineland-Palatinate, Germany
7.7 x 4.6 x 2.3 cm
Winning Bidder: cookieman
Meggen Mine, Sauerland, North Rhine-Westphalia, Germany
7.5 x 4.1 x 1.6 cm
Winning Bidder: chickencityken
Santa Eulalia District, Chihuahua, Mexico
6.8 x 6.3 x 4.2 cm
Winning Bidder: rockman823
unusual Green Fluorite in Quartz
Bosenbrunn, Oelsnitz, Vogtland, Saxony, Germany
8.6 x 6.5 x 4.1 cm
Winning Bidder: frank*gold
Limonite ps. Calcite on Hematite
Schwarzenberg, Saxony, Germany
10.9 x 8.8 x 6.2 cm
Winning Bidder: pyrdog
Siderite on Quartz
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge District, Saxony, Germany
8.7 x 4.5 x 2.4 cm
Winning Bidder: jabaco
Baryte with Cinnabar inclusions!
Clarashall Mine, Birkenfeld, Rhineland-Palatinate, Germany
8.4 x 6.3 x 2.9 cm
Winning Bidder: medicinewheel
Quartz var. Agate, Quartz, and Opal-AN (fl)
Waldhambach, Annweiler am Trifels, Rhineland-Palatinate, Germany
10.9 x 9.1 x 2.1 cm
Winning Bidder: gedeco
Chrome-Cerussite (fluorescent)
Magnet Mine, Waratah district, Tasmania, Australia
3.0 x 1.8 x 1.1 cm
Winning Bidder: titanone
Trenice, Czech Republic
9.6 x 6.4 x 3.5 cm
Winning Bidder: fluffy11
Fluorite , old classic ex Bosch, Smithsonian
Ehrenfriedersdorf, Erzgebirge District, Saxony, Germany
6.7 x 3.8 x 3.7 cm
Winning Bidder: pyrdog
Pyromorphite (Type Locality) on Baryte
Heilige Dreifaltigkeit Mine, Zschopau, Erzgebirge, Saxony, Germany (TL)
6.4 x 4.5 x 3.0 cm
Winning Bidder: ramanguy
Stichtite (Type Locality) on Serpentine
Argent Tunnel, Stichtite Hill, Dundas mineral field, Tasmania, Australia (TL)
5.3 x 5 x 3 cm
Winning Bidder: jabaco
Fluorite (fluorescent) on Siderite
Luise Mine, Stolberg, Harz, Saxony-Anhalt, Germany
3.9 x 2.9 x 2.3 cm
Winning Bidder: ahmbs
Aragonite var. 'Flos Ferri' (fluorescent)
Styrian Erzberg, Eisenerz, Styria, Austria
7.1 x 5.5 x 4.4 cm
Winning Bidder: ghetjw
Leadhillite (Type Locality), Linarite - ex Barstow
Susanna Mine, Leadhills, South Lanarkshire, Scotland, UK
5.9 x 4.7 x 3.6 cm
Winning Bidder: saveahorse
Epidote and Humboldtine
Garnet Hill Mine, Garnet Hill, Calaveras Co., California, USA
5.5 x 3.8 x 3.5 cm
Winning Bidder: ahmbs
Calcite (fluorescent) and Chalcopyrite
Balmat, Balmat-Edwards Zinc District, St. Lawrence Co., New York, USA
6.8 x 4.9 x 3.9 cm
Winning Bidder: jar7709
Cassiterite (twinned)
Zinnwald, Erzgebirge, Saxony, Germany
2.8 x 2.7 x 1.8 cm
Winning Bidder: titanone
Knappenwand area, Untersulzbach valley, Hohe Tauern, Salzburg, Austria
1.9 x 1.8 x 0.5 cm
Winning Bidder: ahmbs
Bad Ems, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
6.1 x 4.0 x 3.1 cm
Winning Bidder: fredbug83
Baryte with Fluorite and Pyrite
Berbes Mining area, Ribadesella, Asturias, Spain
5.1 x 3.8 x 1.8 cm
Winning Bidder: cookieman
Trimouns Talc Mine, Luzenac, Ariege, Occitanie, France
3.1 x 3.0 x 2.7 cm
Winning Bidder: ramanguy
Aurichalcite and Hemimorphite
79 Mine, Banner Dist., Dripping Spring Mts, Gila Co., Arizona, USA
1.9 x 1.7 x 1.4 cm
Winning Bidder: kjruby
Calcite (fluorescent)
Liskeard Mining District, Cornwall, England, UK
8.4 x 6.6 x 4.8 cm
Winning Bidder: saveahorse
Pyromorphite (Type Locality ! Very old specimen!)
Heilige Dreifaltigkeit Mine, Zschopau, Erzgebirge, Saxony, Germany (TL)
6.6 x 4.9 x 2.6 cm
Winning Bidder: nominether