0.33 Ct. Ruby from Mozambique

This 0.33 carat round ruby presents as a transparent, finely polished gemstone, with precise dimensions of 4.14 x 4.12 x 2.81 mm. The stone is cut in a mixed brilliant cut, a design that combines table and pavilion faceting to maximize both brilliance and color saturation in smaller sizes. The color reads as vivid red with strong saturation and a medium to medium deep tone, characteristics that are particularly desirable in ruby grading because color is the single most important factor in value. The clarity grade is slightly included when evaluated at eye level, meaning that small natural inclusions are present but do not significantly detract from the overall transparency or face up appeal. The polish is excellent, which enhances light return and surface luster, and the stone has been heat treated, a commonly accepted enhancement that improves color and clarity while being stable under normal wear. The origin is Mozambique, a source that in recent years has produced rubies with notable vivid color and attractive crystal habit, adding provenance value for educated buyers.

From a technical grading perspective, this 0.33 carat ruby reflects premium attributes that collectors and connoisseurs look for in small carat weight gems. When assessing rubies, the three key components are color, clarity, and cut, with color carrying the greatest weight in pricing and desirability. This stone demonstrates a vivid color intensity, which in the market often commands a premium even at sub half carat sizes. The mixed brilliant cut has been executed to enhance the face up color, concentrating the red saturation in the crown while maintaining scintillation from the pavilion. Slightly included clarity at loupe or eye level indicates natural origin and is consistent with untreated or minimally treated rubies, however this stone has been heat treated to optimize its appearance. Heat treatment is standard and is accepted by most buyers and gemological laboratories, especially when it is properly disclosed. The small but exact carat weight of 0.33 carat makes this ruby highly versatile for fine jewelry, and its excellent polish and proportion help it appear larger and more lively than raw weight might suggest. For an educated buyer, this combination of vivid color, disciplined cutting, and honest clarity grading creates a balance of beauty and value that is difficult to replicate in lower grade material.

In practical terms for use and long term value, a 0.33 carat vivid Mozambique ruby like this offers distinct advantages. In jewelry design it is ideal for delicate rings, stud earrings, or as accent stones in a more complex setting, where color and brilliance are prioritized over sheer size. The stone’s dimensions and mixed brilliant cut allow for secure mounting that preserves light performance, and the excellent polish contributes to sustained luster over time. From an investment perspective, well colored rubies, even in smaller weights, can hold value because vivid color is rarer than larger size in many deposits, and consumer demand favors richly saturated stones. The Natural Ruby Company sources this ruby with full transparency regarding its enhancement and origin, providing buyers with the factual information needed to assess quality and provenance. We recommend setting this ruby in a design that allows light to enter the crown and reflects through the pavilion, and taking standard care precautions to avoid harsh chemical exposure and high heat that could affect settings or mounts. For a customer seeking a premium quality red ruby in a refined carat weight, this Mozambique 0.33 carat round ruby represents an informed choice, combining desirable color intensity, skilled cutting, and clear disclosure from The Natural Ruby Company.