Rough Oregon Sunstone from the United States - 20.2 CTW

Gem collectors and jewelry lovers from all over the world are fast becoming aware of this uniquely American gemstone. While many varieties of labradorite feldspar can display aventurescence or schiller and are commonly called “sunstones,” those effects are typically caused by inclusions of hematite or goethite. In contrast, the labradorite sunstones found in Oregon have inclusions of copper. This unique happenstance means these gemstones may both display a schiller effect and transparency. This makes them highly desirable as faceted jewelry stones.

Intense red and transparent gems with schiller are in great demand. However, many color varieties occur in Oregon, with and without the glowing effect.

Enhancements

Although plagioclase feldspars such as andesine can be enhanced with the addition of copper through heating and pressure treatments, Oregon sunstone isn’t known to be enhanced or treated. It acquires its copper naturally.

Sources

Substantial amounts of high-value Oregon sunstone rough are now being extracted from its namesake state in the USA.

Care

Because of their hardness of 6 to 6.5, Oregon sunstones are best suited for jewelry such as pendants, earrings, brooches, or other pieces that won’t endure heavy wear. Common dust has a hardness of 7 to 7.5 and will scratch this material. Steel can also scratch gems with a hardness of 6. For ring use, place Oregon sunstones in protective settings.

The best cleaning method for Oregon sunstones is warm water, detergent, and a soft brush. Avoid mechanical cleaning methods such as ultrasonic systems and steam.