6.62 Ct. Star Ruby from Mozambique

I am pleased to introduce a remarkable natural gemstone from The Natural Ruby Company, a semi translucent star ruby that captures attention with its vivid presence, and superb natural character. This oval shaped gem weighs 6.62 carat, and measures 11.66 x 9.19 x 5.59 mm, making it an ideal size for a statement ring, a pendant, or a bespoke piece of jewelry. The gem has been fashioned as a cabochon, a cut that is purpose built to reveal and enhance the classic star phenomenon known as asterism. Under a single light source the silky inclusions within the stone align to produce a moving star that glides across the domed surface, and this dynamic optical effect is one of the defining charms of star rubies. The overall silhouette is pleasingly balanced, with an elegant oval outline and a well proportioned dome height that maximizes the visibility of the star, and the polish quality is excellent, providing a smooth, reflective finish that complements the stone color and surface texture.

Color plays a central role in the appeal of this star ruby, and this specimen shows an intense overall color intensity, in a pinkish red hue that reads as both lively and rich. The color leans toward the warmer end of the red spectrum, with a soft pink undertone that gives the gem a modern and wearable look, while retaining the classic allure associated with fine rubies. At eye level the clarity is graded as included, and these inclusions are a natural and expected feature in star rubies, where aligned needle like rutile inclusions are responsible for the sharp star effect. Rather than detracting from value, the internal silk often enhances the visual drama of the asterism, providing that milky sheen and luminous movement that collectors and connoisseurs prize. This particular stone is untreated, with no enhancement, which means the color and phenomena are natural and original, attributes increasingly sought by collectors and clients who prefer untreated gemstones with authentic provenance.

From a practical and design perspective, this 6.62 carat oval star ruby is versatile and rewarding to work with, whether you are commissioning a bespoke piece, selecting a focal gem for a heirloom project, or acquiring a collectible specimen. The cabochon cut and dimensions lend themselves beautifully to settings that protect the dome, such as a bezel for everyday wear, or a low profile prong setting that allows light to interact with the surface while minimizing the risk of knocks to the dome. To showcase the star most effectively, the stone should be oriented so the dome faces upward, and a single directional light source will reveal the asterism at its best, with the star appearing to glide across the surface as the stone or the light moves. With a hardness of corundum at nine on the Mohs scale, rubies are durable for most jewelry uses, yet given the included clarity grade and the cabochon dome, careful setting and occasional professional maintenance will help preserve the surface luster and the crispness of the star over years of enjoyment.

As custodians of fine rubies, The Natural Ruby Company stands behind the natural origin and untreated condition of this Mozambique star ruby, and we welcome inquiries from collectors, designers, and private buyers who wish to learn more about provenance, grading, and potential customization options. We can provide additional high resolution images and lighting studies to show the star under various conditions, and we can discuss mounting recommendations that will best display the asterism while protecting the stone. For clients who desire formal documentation, we can assist with gemological reporting arrangements, and we always encourage viewing under controlled lighting to appreciate the full character of the stone. If you are drawn to an authentic, intense, and eye catching pinkish red star ruby with compelling natural asterism, this 6.62 carat cabochon from Mozambique represents a special opportunity. Please contact The Natural Ruby Company for further details, to request additional images, or to arrange a private consultation, and allow us to guide you through the selection and customization process so that this distinguished gem can find its perfect setting and new home.