Deep in the pegmatite dikes of Pala and Mesa Grande, San Diego County miners once pulled out a gemstone so prized it traveled straight into the imperial court of China's last empress. Between 1902 and 1910, San Diego County supplied China with roughly 120 tons of gem-quality pink tourmaline, according to the San Diego Natural History Museum. The market at the center of that demand was China's imperial court during the tenure of Empress Dowager Cixi, who favored pink tourmaline above other stones.
The story of how a remote stretch of backcountry hillside became a supplier to the Chinese imperial court is detailed in a recent piece from Times of San Diego, written by Debbie L. Sklar. Miners working the region's pegmatite rock discovered colorful tourmaline crystals formed inside pockets that developed as magma cooled deep underground, per the county's own geological review of the Peninsular Ranges batholith, the massive igneous formation stretching from Southern California into Baja California, according to the County of San Diego. Those pegmatites contain pockets filled with large, well-formed crystals, helping make San Diego County known for its pegmatite mines in the Pala and Mesa Grande areas.
A Broker's Direct Line to Beijing
The connection between remote Southern California hillsides and the Chinese imperial court ran through a Tiffany gemologist named J.L. Tannenbaum, who commissioned Southern California miners to find and ship the tourmaline requested by China's imperial court. Separately, New York gem merchant J.L. Tannenbaum acquired the Mesa Grande claim in 1902, running the operation at full capacity to fill Tiffany & Co. orders bound for China, according to the San Diego History Center, which notes Tannenbaum routinely hired local cowboys to dig out tourmaline pockets whenever imperial orders arrived from New York.
The Himalaya Mine near Mesa Grande became a major producer in its district, and over its operating life it yielded an estimated 250,000 pounds — roughly 125 tons — of tourmaline and mineral specimens, more gem-quality tourmaline during its 15 peak years than any other mine in North America, per Where to Find Rocks. Miners named in period accounts near the mine included Vance Angel, J. Goodman Braye, Heighway, Lohrer, and La Chapa. At Pala, John Reed served as superintendent of the Stewart Lithia Mine, another of the district's key pegmatite operations.
What the Chinese Court Did With the Stones
Once the pink and reddish tourmaline reached China, court lapidaries used it for snuff bottles and jewelry, according to Pala International. Empress Dowager Cixi's personal interest in the gem helped create an entire international market for tourmaline, and pink tourmaline demand helped make San Diego County an important source for Chinese buyers during those peak years.
Tourmaline was not the only San Diego gem to earn imperial and industry attention. In late 1902, pink spodumene specimens found at Pala were sent to Tiffany & Co. mineralogist George Frederick Kunz, and University of North Carolina chemist Charles Baskerville officially named the new lilac-pink gemstone variety kunzite in Kunz's honor in 1903, per Pala International. The kunzite finds emerged from Pala's White Queen and Pala Chief mines, expanding the district's reputation well beyond tourmaline alone.
An Empire's Death Ends the Boom
The market collapse was as sudden as the boom itself. Empress Dowager Cixi died in 1908, and China's market for pink tourmaline crashed after the overthrow of the Chinese aristocracy in 1911, while the Qing dynasty was overthrown in 1912, according to Gem Adventurer. Sporadic small-scale mining continued from 1913 into the early 1950s. The imperial court had been the industry's primary buyer, and once that buyer disappeared, so did the economic engine sustaining San Diego's tourmaline mines.
Long before Tiffany brokers and Beijing lapidaries entered the picture, local Indigenous people already knew of the crystals. Federal notices document tourmaline crystals excavated from San Diego County sites as sacred Native American items, according to records published by GovInfo. That history situates the gemstone's spiritual and cultural significance in the region well before Western or Chinese commercial demand ever took hold.
Museum Specimens and a 1972 Revival
Some of San Diego County's most famous individual finds became museum centerpieces. In 1907, miner Frank Barlow Schuyler unearthed the celebrated Steamboat tourmaline — an 11-inch-tall specimen featuring two parallel red crystals tipped in green — at the Tourmaline King Mine, a piece initially sold to engineer Washington A. Roebling before eventually being acquired for the Smithsonian Institution's permanent collection, according to the Smithsonian Mineral Collection.
The district's gem legacy didn't end with the Qing dynasty. In January 1972, miners at the Tourmaline Queen Mine in Pala struck a legendary pocket yielding vivid pink rubellite tourmalines topped with blue caps, some attached to peach-colored morganite, which curators at the American Museum of Natural History declared the “find of the century,” according to the San Diego Natural History Museum. Earlier, in 1969, the Pala Stewart Mine produced about a ton of hot-pink tourmaline, per the museum's account, while the Pala area has continued producing tourmaline and other collectible minerals prized by collectors and mineral enthusiasts for their color and crystal quality.
Digging for Gems Today
Southern California remains known for its gem-bearing pegmatites, and visitors can still get their hands dirty in that legacy. While commercial mining in San Diego County has largely scaled back, Oceanview Mine offers public fee digging and a mine tour, according to DigForGems.com. More than a century after an empress's tastes reshaped a corner of Southern California's backcountry, the tourmaline that once traveled to Beijing's imperial court is still coming out of the ground in Pala.
