This fine quality boulder opal pendant was ground polished into a free-form cabochon shape from natural boulder opal rough that was discovered ethically and respectfully in Australia. This gem was drilled through near the top so that it can be worn as a boulder opal necklace. ***We are offering this genuine boulder opal pendant with an 18 inch black leather necklace at no extra charge. See another view of this genuine boulder opal necklace. ***If you would prefer a 16 inch black rubber necklace just send an email to us when ordering. Other than being polished and drilled, this boulder opal gem is completely natural with no dyes, glues, or laminations. ***The boulder opal has a dark brown clay-ironstone natural matrix, and within the opal there are areas with beautiful green, red and blue natural flashes of color as you turn the opal! Genuine boulder pendant with opal gem weighing 71.36 carats ***This natural boulder opal pendant is 1.5" long x 0.7" wide (40mm x 18mm) Polished from a natural boulder opal found ethically and respectfully in Queensland, Australia Opal is very popular for metaphysical use - Opal is said to stimulates originality and creativity, also to helps release anger and claim self worth, aiding in expressing one's true self. ***Opal is also said to strengthens memory. The beautiful opal stone is the actual one you will receive. ***A Certificate of Authenticity from our main website mineralminers.com will accompany this unique item at no additional cost. If you would like to learn more about Opals, please copy and paste this link to our Opal Educational and Information Page; https://www.mineralminers.com/html/opal.htm At MineralMiners.com your satisfaction is our top priority! We guarantee Unique Items, Superb Energy and Collector Quality at Miner's Prices! ? Have a "Gem" day!