13.46 Ct. Cabochon Rutilated Quartz from Ceylon (Sri Lanka)

One transparent 13.46 carat oval bluish grey rutilated quartz is presented with precise dimensions of 18.31 x 13.62 x 7.50 mm, offered and described by The Natural Gemstone Company. The gem is fashioned in a classic cabochon cut, chosen to emphasize internal features and to provide a smooth, domed surface that enhances light transmission and visual depth. The weight and proportions of this specimen yield a substantial presence for both bespoke jewelry and collector pieces, while the oval outline offers versatility for rings, pendants, and other mounted designs. The hue reads as a delicate bluish grey under neutral lighting, exhibiting a light color intensity that allows the characteristic rutile needles to remain the principal visual interest. Transparency is high, permitting clear observation of internal textures and inclusions, and the overall finish reflects an excellent polish that produces a clean surface appearance and comfortable wearability.

Clarity is graded as very slightly included when evaluated at eye level, a standard assessment that considers the visible impact of inclusions without magnification. The internal patterning is dominated by fine, hair like rutile needles that traverse the body of the quartz in a largely linear to slightly radiating orientation. These needle inclusions present a natural, spiky network that creates a distinctive visual landscape, with contrast against the transparent host quartz that accentuates depth and three dimensionality. The distribution of needles is such that there are both concentrated and more open areas, allowing for varied viewing experiences as the piece is rotated. The cabochon form moderates light reflection and prevents excessive glare, thereby enhancing the legibility of the rutile pattern from multiple viewing angles. The combination of clarity, internal structure, and polish results in a gem that is aesthetically appealing to connoisseurs of inclusion rich specimens and to designers seeking an organic, textured focal point.

This rutilated quartz originates from Ceylon, Sri Lanka, a locality renowned for producing high quality quartz and a diverse array of gem species. The origin, confirmed through available provenance information, contributes to the specimen s descriptive profile and is relevant to collectors and appraisers. There is no enhancement, and the stone is reported as natural with no heat treatment, irradiation, dyeing, or other modification. The absence of enhancement supports straightforward valuation and long term stability in appearance. In practical terms, the light bluish grey tonality combines well with both white and yellow metals, with white gold and platinum emphasizing the internal needle contrast, and warm yellow gold providing a subtle complementary backdrop. The cabochon profile pairs particularly well with bezel settings, which protect the girdle and provide a continuous metal frame, and with open back mounts where light transmission through the base can emphasize clarity and internal features.

For technical and handling considerations, the provided dimensions and carat weight support accurate setting design and appraisal documentation. The stone s measurements of 18.31 x 13.62 x 7.50 mm should be used when preparing a custom mount or when determining bezel dimensions, and the cabochon dome height of 7.50 mm is a key parameter for seat depth and prong clearance when designing settings. Routine care is straightforward, consisting of gentle cleaning with warm soapy water and a soft brush, followed by careful drying, with avoidance of ultrasonic cleaners and harsh chemical cleaners to preserve the polish and surface integrity. Due to the natural rutile inclusions, sudden temperature shocks should be avoided. The Natural Gemstone Company can provide additional images, magnified views, and condition reports upon request, and can assist with certification options and bespoke setting recommendations to match design intent and technical requirements.