1.63 Ct. Multi Color Crystal Opal (Jelly Opal) from Australia

This listing describes one 1.63 carat oval multi color Crystal Opal, also known as Jelly Opal, originating from Australia. The gem measures 9.66 by 8.37 by 3.24 mm, and is cut in a classic tablet cutting style to a shallow, low domed profile that emphasizes surface area. The appearance is described as opaque with intense color intensity, and the piece has been delivered with an excellent polish. No enhancement has been applied to this stone, it is natural and untreated. The overall form is oval, the cutting style is tablet, and the catalog designation from The Natural Gemstone Company reflects the combination of weight, dimensions, shape, cut, and origin for straightforward verification and setting planning.

The tablet cut is central to the optical character of this Crystal Opal, by design optimizing the interaction between incident light and the internal silica structure that produces play of color. The low dome and expanded table reduce deep viewing angles that can otherwise permit windowing, and instead present a broad plane that encourages light to enter the body of the opal at uniform angles. Within a crystal or jelly opal, microscopic silica spheres arrange in regular layers that diffract light into discrete spectral colors. The tablet cut increases the effective area over which diffraction is sampled, producing more consistent and intense flashes of green, red, and blue across the surface as the viewing angle or light source changes. In addition, the relatively shallow pavilion minimizes internal light loss that can occur in higher domed cuts, preserving brightness and allowing smaller color patches to be read as continuous fields at normal viewing distances. The precise shaping of the girdle and the controlled shallow profile also reduce shadowing from the bezel or prongs, which is especially important for opals intended for close mountings in rings or pendants. The excellent polish enhances this effect by creating a smooth air to gemstone interface, which reduces scatter from surface microabrasions and maintains clean, reflective highlights that complement the internal play of color.

Practical considerations are straightforward, aligned with the physical characteristics of this tablet cut Crystal Opal. The 1.63 carat weight and the 9.66 by 8.37 mm table present well in both minimalist and more protective settings, with the low profile providing added security against impact while maintaining strong visual performance. The explicit absence of enhancements means the stone requires standard opal care, avoiding rapid thermal shock, prolonged exposure to desiccating environments, and hard knocks, while routine cleaning with mild soap and water is appropriate. The intense color intensity and even polish make this specimen suitable for use in bespoke jewellery where the objective is to display natural play of color with optical clarity and stability. The Natural Gemstone Company documents this item as a natural Australian Crystal Opal, jelly type, tablet cut, opaque, 1.63 carats, dimensions 9.66 by 8.37 by 3.24 mm, no enhancement, excellent polish, intense color intensity, providing a concise set of specifications for design and appraisal purposes.