1.70 Ct. Pinkish Red Ruby from Mozambique

Introducing a rare and beautiful 1.70 carat princess shape pinkish red ruby from Mozambique, presented by The Natural Ruby Company. This transparent gemstone measures 6.78 by 6.64 by 3.96 millimeters, with a depth of approximately 3.96 millimeters which yields a depth percentage of approximately 59 percent, a proportion that helps balance weight retention with excellent light return. The stone is princess cut, with a clarity grade of included evaluated at eye level, intense color intensity, and an excellent polish. The ruby has been heat treated, a common and accepted enhancement that intensifies the natural red tones and improves clarity in most commercial rubies. As your trusted source for premium rubies, The Natural Ruby Company highlights the combination of precise cutting, vivid Mozambique color, and polished symmetry that make this gem stand out in the marketplace.

When we compare the reflective qualities of this princess cut ruby to other gemstones in the same category, several advantages become clear. Rubies have a refractive index roughly in the range of 1.76 to 1.77, which is higher than many companion red gemstones such as spinel, with an RI near 1.712, and tourmaline, with an RI closer to 1.62. That higher refractive index allows rubies to display stronger internal reflections and a more dynamic play of light, giving a richer, more luminous appearance under varied lighting. Unlike diamond, which owes its signature brilliance to very high dispersion and a clear white fire, ruby reflection is dominated by intense color saturation combined with bright flashes of light. This particular Mozambique ruby benefits from both transparency and an intense pinkish red hue, so its reflections are vibrant and colored rather than neutral, creating a warm and opulent visual presence that outshines many similar sized stones in mixed collections. Compared to sapphires of similar size and saturation, this ruby offers a different kind of brightness, a deeper and more glowing reflectivity that emphasizes red tonalities and makes the gem appear to emanate color from within.

The princess cut itself plays a pivotal role in how this ruby reflects light, and it compares favorably to other popular ruby cuts on the market. The square silhouette with crisp corners and a faceting pattern oriented for scintillation produces bright, concentrated flashes across the table, while retaining more carat weight from the rough than many round or brilliant cuts. Compared to cushion cuts which often present broader flashes and a pillowy look, the princess cut gives a contemporary, lively sparkle that reads as both modern and luxurious. The precise facet junctions and the excellent polish of this stone mean that each plane reflects light cleanly, increasing scintillation and contrast. The balance between table size and depth percentage at approximately 59 percent promotes efficient light return, so light entering the stone is sent back out as colored brilliance and lively flashes. This is particularly important in rubies, where too shallow or too deep proportions can dissipate color intensity or trap light, making the gem appear dull. The princess cut here has been executed to preserve the vivid Mozambique tone while maximizing return, producing reflective qualities that often surpass similarly weighted rubies cut to traditional shapes in terms of apparent brightness and punch.

From a value and market perspective, this 1.70 carat Mozambique ruby represents a compelling alternative to other red gemstones and to many rubies that lack this combination of transparency, intense color, shape, and finish. Rubies from Mozambique are widely respected for their saturated red to pinkish red hues, and when paired with a high quality polish and a precise princess cut, they become highly desirable for fine jewelry and investment pieces. Heat treatment is disclosed, and it aligns with industry norms to enhance the stone without compromising stability or beauty. Compared to comparable carat weights in spinel or garnet, this ruby offers stronger color depth and a more luminous reflective quality due to its higher refractive index, and compared to many sapphires in the red to pink range, it presents a richer red tone that commands attention. The included clarity at eye level is a natural characteristic that also serves as evidence of a genuine, untreated origin beneath the disclosed heat treatment, and to many connoisseurs, these internal features provide authenticity and character rather than detracting from aesthetic appeal. Choosing this ruby from The Natural Ruby Company means selecting a stone that has been sourced responsibly, evaluated with transparency, and cut to elevate its natural reflective properties, making it an exceptional choice for bespoke jewelry, heirloom pieces, or a thoughtful investment in colored gemstones.