0.63 Ct. Greenish Blue Sapphire from Madagascar

This gemstone is a transparent, greenish blue round sapphire weighing 0.63 carat, with precise dimensions of 4.59 by 4.59 by 3.54 millimeters, presented in a mixed brilliant cut and finished with an excellent polish. The stone exhibits intense color intensity and a clarity grade of slightly included when evaluated at eye level, indicating the presence of minor internal features that do not materially compromise the appearance or structural soundness. The sapphire has undergone a standard heat treatment enhancement, a stable and widely accepted practice for improving color and clarity in corundum, and its geological origin is Madagascar, a well known source for a diverse range of sapphire hues. The cut and polish work together to maximize light return and surface luster, producing well defined facets and scintillation appropriate for fine jewelry applications, and the round outline and mixed brilliant facet arrangement provide predictable setting geometry for rings, earrings, pendants, or other mounted pieces.

From a durability standpoint, this sapphire is well suited to daily wear in jewelry, because it is composed of corundum, the mineral species that includes both sapphires and rubies, which has a Mohs hardness of nine and ranks second only to diamond for resistance to scratching. The crystal structure of corundum provides good toughness, and natural sapphires typically lack a true cleavage plane, reducing susceptibility to cleavage related breakage under normal wear. The slightly included clarity grade indicates internal characteristics that are visible under close inspection, however these inclusions are not indicative of structural weakness and are typical for natural stones of this character. The depth and pavilion proportions of this particular gem, as evidenced by the 3.54 millimeter depth relative to the 4.59 millimeter diameter, contribute to color saturation while maintaining sufficient pavilion angles for durable mounting, and when properly set the stone can withstand the rigors of everyday use in a ring, pendant, or bracelet.

Care and cleaning recommendations reflect the stone s robustness and the stability of the heat treatment, while also acknowledging the presence of inclusions that may warrant cautious handling. Routine cleaning with warm water, mild detergent, and a soft brush is effective for removing oils and dust accumulated during daily wear, and a final rinse and gentle drying with a lint free cloth will restore surface brilliance without risk. Heat treated corundum is generally stable and tolerates standard professional cleaning techniques, however, if there is concern about internal features or if the gem has been mounted with certain adhesives or protective coatings, it is prudent to seek the advice of a professional jeweler before using ultrasonic or steam cleaning devices. Avoid prolonged exposure to harsh household chemicals such as strong acids or bleach, and have prongs, bezels, and other mounting elements inspected periodically to ensure the stone remains secure and that settings have not been compromised by wear.

Optical and practical considerations make this sapphire a versatile choice for a range of jewelry designs, and the combination of transparent clarity, intense greenish blue hue, and excellent polish results in an attractive face up presentation suitable for both classic and contemporary settings. The mixed brilliant cut enhances scintillation while preserving a balanced appearance under varied lighting, and the compact 0.63 carat size offers an elegant presence for a solitaire ring or a refined accent in multi stone compositions. The Natural Sapphire Company has provided this gem with full disclosure of its characteristics, including weight, dimensions, cut, clarity, treatment, and origin, enabling informed decision making regarding setting style and care. For clients seeking a durable, visually compelling sapphire for daily wear, consultation regarding setting options that protect the girdle and crown while optimizing light performance will help ensure long term enjoyment and preservation of the stone s qualities.