Donald K. Olson and Associates

Donald K. Olson and Associates Mineral specimens and cabochons: Nature's beauty from around the globe for collectors. The slabs are then sent to expert lapidaries (in the U.S.

Don and Gloria both started collecting minerals when they were eight years old and have each been in the mineral and gem business for over 40 years. They travel across the country, buying and selling minerals, displaying at over a dozen trade shows every year in California, Texas, Massachusetts, and the large wholesale and retail shows in Tucson, Arizona (in February) and Denver, Colorado (in Sept

ember). A large portion of their mineral inventory is obtained by purchasing mineral collections requiring extensive travel in North America and overseas to Europe, China and Africa. During these trips they also hand-select the gem rough necessary to manufacture the beautiful cabochons you see on this site. All of the slabbing (cutting the rough rock into slices) and templating (choosing the shape, design, and pattern) of the stones is carefully executed by Don and Gloria at their offices and cutting facility in Southern California. and overseas) and skillfully finished and polished to produce distinctive gemstones for jewelry designers and collectors.

10/11/2025

• Porcelain Fluorite with Quartz •
• Yaogangxian Mine, Yizhang Co., Chenzhou, Hunan, China •
• Available | 850 + shipping •

10/05/2025

• Fluorite on Calcite •
• Shangbao Mine, Leiyang Co., Hengyang, Hunan, China •
• Available | 800 + shipping •

02/07/2025
• Fluorite •• Stoneco White Rock Quarry, Clay Center, Allen Township, Ottawa County, Ohio, USA •• Available | 1800 USD +...
11/30/2024

• Fluorite •
• Stoneco White Rock Quarry, Clay Center, Allen Township, Ottawa County, Ohio, USA •
• Available | 1800 USD + shipping •

• Fluorite & Celestine •• Stoneco White Rock Quarry, Clay Center, Allen Township, Ottawa County, Ohio, USA •• Available ...
11/22/2024

• Fluorite & Celestine •
• Stoneco White Rock Quarry, Clay Center, Allen Township, Ottawa County, Ohio, USA •
• Available | 1200 USD + shipping •

• Pyrite on Hematite •• Hiawatha Mine, Stambaugh, Iron County, Michigan, USA •• Available | 160 USD + shipping •
11/20/2024

• Pyrite on Hematite •
• Hiawatha Mine, Stambaugh, Iron County, Michigan, USA •
• Available | 160 USD + shipping •

• Fluorite Octahedron (polished) •• Hardin County, Illinois, USA •• Available | 200 USD + shipping •
11/19/2024

• Fluorite Octahedron (polished) •
• Hardin County, Illinois, USA •
• Available | 200 USD + shipping •

• Fluorite •• Denton Mine, Harris Creek Mining Sub-District, Hardin County, Illinois, USA •• Available | 200 USD + shipp...
11/19/2024

• Fluorite •
• Denton Mine, Harris Creek Mining Sub-District, Hardin County, Illinois, USA •
• Available | 200 USD + shipping •

• Tourmaline with Albite & Lepidolite •• Himalaya Mine, Gem Hill, Mesa Grande Mining District, San Diego County, Califor...
11/17/2024

• Tourmaline with Albite & Lepidolite •
• Himalaya Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA •
• Available | 1400 USD + shipping •

• Galena, Quartz, Calcite •• New Glencrieff Mine, Wanlockhead, Dumfries and Galloway, Scotland, UK •• Available | 650 US...
11/14/2024

• Galena, Quartz, Calcite •
• New Glencrieff Mine, Wanlockhead, Dumfries and Galloway, Scotland, UK •
• Available | 650 USD + shipping •

Address

Bonsall, CA
92003

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