117 E. Kemp Avenue

Watertown, SD 57201

(605) 882-6972 (gallery)

(605) 881-0626 (cell)


click here for our LOCATION & A MAP

click here to CONTACT US


Custom Framing for Artwork, Paintings, Pictures, Memorabilia; Custom Design Stained Glass for homes / residential, business, churches, & more.  Stained Glass Repair & Restoration; Art Gallery and Studio with art & stained glass classes.  We use the finest materials, provide the highest quality work and craftmanship, and we also have the best pricing in the Watertown / northeast South Dakota, area.


All content © 2015 to present by AL WENTZELL INC., / Al Wentzell Jr.  All rights reserved.  Any reproduction, storing or transmittal prohibited without prior express written permission.  By visiting and/or using this website, you agree to our terms of use, privacy policy, and sales terms/return policy. Thanks for visiting!


Website design by Christopher Wentzell / Dominion Gem Exploration.



  • Birchtree Gallery on Facebook
  • Birchtree Gallery on Instagram

California Blue Cap Tourmaline, Queen Mine, Pala District, San Diego County, California, USA.  Having a blue cap to its flat termination, graduating to lighter pink and then deeper pink. The faces have classic striations and there is a small cluster of microcline feldspar at the base. Measuring 1.5 x 1.25 x 1.0 inches max.  Provenance: high end auction house catalogue.  Acquiring/Owning a blue Cap Tourmaline from the Queen Mine at Pala is the dream of most collectors that few ever get to fulfill. There are scarce few to go around, right around 100 crystals total came out according to the reports, and most of the major ones are in museums. The prices were high even when I was young, and I have watched them skyrocket in the last 20 years. Small singles can go in the $20k range. Any of the big ones that become available have million dollar prices. This one is a smaller nice crystal, yet very affordable. Where else will you find one for under $5-10k? This is one of those pieces that will only go up in value, being from the most notable gem mineral find in North America of all time, the ikonic Blue Cap Pocket of 1972. I think that Rob Lavinksy nailed it on the head when he said, "Blue-caps come up to market so seldomly that few collectors will ever get a chance to own a great one, regardless of wealth or access."
If you have been living in a cave since 1972 and need a reference on this find, CLICK HERE. I will try to get a video of this one uploaded soon, it is kept in secure storage at the bank.  Serious offers and trades considered, contact us

Blue Cap Tourmaline , Queen Mine , Pala California 1972 RARE

$12,500.00 Regular Price
$9,200.00Sale Price