David K. Joyce

Arizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ

Daniel and I collected these interesting chalcedony-opal specimens near Safford, AZ. They are botryoidal in habit with some occasional, small quartz crystals attached. Most importantly, they are brightly fluorescent under short wave U/V light.

All prices in Canadian dollars. For payment in US$, deduct 18% or multiply by 0.82.

Click on any of the following thumbnails to view a larger image of the specimen.

Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29738
  • Quartz, var. Chalcedony, Opal
  • 5.8x4.2x3.4 cm
  • Largest Crystal Size: n/a
  • $35.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • A really nice looking mound of botryoidal chalcedony and opal that fluoresces bright green in sw uv light. Very striking!
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29737
  • Quartz, var. Chalcedony, Opal
  • 19.3x6.5x4.4 cm
  • Largest Crystal Size: n/a
  • $45.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • Lots of botryoidal silica tops a mound of siliceous sinter and is a bright fluorescent green under sw uv light. Striking!
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29736
  • Quartz, var. Chalcedony, Opal
  • 4.1x3.4x3.0 cm
  • Largest Crystal Size: n/a
  • $35.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • A cool, little botryoidal mound of silica that has zoned, vibrant, green fluorescence in under sw uv light. Nice one!
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29734
  • Quartz, var. Chalcedony, Opal
  • 4.6x3.7x3.5 cm
  • Largest Crystal Size: 6mm
  • $35.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • This one is actually a big botryoid of chalcedony-opal formed on top of a spray of larger quartz crystals. The best feature though is the bright green fluorescence under SW u-v light.
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29735
  • Quartz, var. Chalcedony, Opal
  • 12.5x7.0x5.5 cm
  • Largest Crystal Size: n/a
  • $45.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • A mass off swirling, botryoidal chalcedony and opal where the top part of the specimen is very fluorescent while the lower part is not. Vibrant! Looks great!
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29732
  • Quartz, var. Chalcedony, Opal
  • 5.5x5.1x2.2 cm
  • Largest Crystal Size: n/a
  • $35.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • A mound of botryoidal, white silica that fluoresces green in S-W u-v- light. Looks good in any light! :)
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29733
  • Quartz, var. Chalcedony, Opal
  • 6.5x5.0x2.8 cm
  • Largest Crystal Size: 4mm
  • $35.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • This one is actually a plate of quartz crystal mounds with chalcedony-opal formed on parts of the quartz crystals. Interesting!
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29731
  • Quartz, var. Chalcedony, Opal
  • 4.3x3.7x4.1 cm
  • Largest Crystal Size: 1mm
  • $35.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • An interesting mound of white botryoids with actual, small quartz crystals on the left. Fluoresces very nicely!
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29729
  • Quartz, var. Chalcedony, Opal
  • 12.5x6.5x4.5 cm
  • Largest Crystal Size: n/a
  • $45.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • A larger, mound of botryoidal chalcedony-opal that looks pretty good in white light but super in u/v light! Great one for a fluorescent display!
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29730
  • Quartz, var. Chalcedony, Opal
  • 13.0x7.6x6.6 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • A larger specimen of silica that is fluorescent across the top of the botryoids but less so in the lower part. Striking! Displays well.
    DKDD
Quartz, var chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29727
  • Quartz, var chalcedony, Opal
  • 8.4x6.8x3.5 cm
  • Largest Crystal Size: n/a
  • $40.00
  • Black Hills
  • Safford, Graham County
    Arizona, USA
  • A mound of white chalcedony and opal that fluoresces bright green in short wave light. Striking!
    DKDD
Quartz, var. Chalcedony, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29728
  • Quartz, var. Chalcedony, Opal
  • 7.5x6.0x3.5 cm
  • Largest Crystal Size: 3mm
  • $45.00
  • Black Hills Area
  • Safford, Graham County
    Arizona, USA
  • This is probably the best looking specimen in white light! It is a couple of mounds of chalcedony-opal rimmed with small quartz crystals with a striking knob od silica on the top right that is not fluorescent. Sweet!
    DKDD
Quartz, OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29725
  • Quartz, Opal
  • 11.0x7.0x7.1 cm
  • Largest Crystal Size: n/a
  • $45.00
  • Black Hills
  • Safford, Graham County
    Arizona, USA
  • A botryoidal mass of chalcedony and opal that shows excellent green fluorescence.
    DKDD
Chalcedony-OpalArizona -Fluorescent Chalcedony-Opal, Black Hills, Graham County, AZ
  • Item #29726
  • Chalcedony-Opal
  • 9.7x8.5x6.5 cm
  • Largest Crystal Size: n
  • $45.00
  • Black Hills
  • Safford, Graham County
    Arizona, USA
  • A couple of areas of shiny chalcedony and opal are present on the front-top of this specimen. The lighter coloured silica fluoresces while the darker coloured does not. Displays well!
    DKDD