I have to assume these are simulated or lab grown gorgeous fuchsia rubies, but they very well may be natural. I do not have a certification so I do not know. The Vintage RITZ 925 Sterling Silver Gold Vermeil Ruby S Link Tennis Bracelet is a stunning piece of jewelry with a classic and elegant design. The bracelet features an s link style, showcasing a vibrant ruby set in a luxurious vermeil gold plating. With a length of 7.5 inches, this bracelet exudes sophistication and timeless beauty, making it a perfect accessory for any outfit or occasion. The combination of gold vermeil and the 96 rubies adds a pop of color and glamour.