A vibrant, professional-grade gemstone for jewelry making and resale, this round lab-created ruby cabochon is composed of man-made corundum — sharing the same chemical composition, crystal structure, and hardness as its natural counterpart. It delivers excellent clarity and vivid, even coloration at a fraction of the cost of mined ruby, making it an ideal choice for production jewelry, custom settings, and retail display pieces.Ruby — known in Sanskrit as the "King of Gems" — has been among the most prized gemstones throughout history. As the most valuable variety of corundum, it commands the highest per-carat price of any colored stone. The rich red hue is produced by trace amounts of chromium, with color ranging from orangey red to purplish red. Lab-created ruby reproduces this color and hardness with consistency, batch after batch.Features Man-made corundum with the same chemical composition as natural ruby Medium to dark purplish red color with vivid, even saturation Eye-clean clarity — free of visible inclusions to the naked eye Mohs hardness of 9 — excellent durability for everyday wear Round cabochon cut — suited for bezel, prong, and channel settings July birthstone — popular for custom and commemorative jewelry Consistent color and clarity across sizes, ideal for production runs Specifications Stone Type Lab-created ruby (synthetic corundum) Cut Round cabochon Color Medium to dark purplish red Clarity Eye-clean Treatment Synthetic (color and clarity achieved during growth) Mohs Hardness 9 Birthstone Month July Available Options Part # Diameter 931-704 4mm 931-705 5mm 931-706 6mm 931-708 8mm Notes Clean with warm, soapy water; ultrasonic and steam cleaners are generally safe for this stone type. Some minor inclusions may be present — completely inclusion-free rubies are rare even in lab-created material. Heat treatment is standard practice for natural rubies; synthetic varieties achieve their color and clarity during the growth process without additional treatment.
