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Jewelry FAQS

Jewelry Education

Color Gemstones

Color Gemstones are often enhanced in the production process. Colored Gemstones offered by Costco have been enhanced unless otherwise stated. Please see Costco.com for more gemstone treatment and care information.

Commonly used treatments used to improve or alter the color of a gemstone can include heating or dying. Please refer to the Gemstone Enhancement and Care Guide for individual gemstone information.

Care and Maintenance

  • Avoid extended exposure to direct sunlight, extreme heat, or sudden temperature changes as this may cause the gemstones to fade or break.
  • Gemstones vary in hardness and are susceptible to becoming scratched. It's important to wear and store your gemstone jewelry with care.
  • Avoid all harsh chemicals such as bleach, ammonia and hair spray as they may damage metal and gemstones.

Please remember to have your jewelry inspected by a qualified jeweler every 6 months for any needed maintenance or repair.

Shop Color Gemstones

Color Gemstones
Color gemstone selections may vary by season and availability. Please click here for the most current availability on Costco.com. Select color gemstones may be available at your local Costco warehouse.