2.59 Ct. Swiss Blue Topaz from Brazil

This transparent Swiss blue topaz offered by The Natural Gemstone Company weighs 2.59 carat, it is a round shape with dimensions 7.76 by 7.78 by 5.82 millimeters, it is cut in a mixed brilliant style with a faceted crown of kite and star facets paired with a modified pavilion to optimize return for topaz refractive properties, clarity is described as very very slightly included when evaluated at eye level, color intensity is classified as intense, polish is excellent, and the material has been irradiated to stabilize and enhance the blue hue, origin Brazil. The mixed brilliant execution produces crisp facet junctions and strong contrast between scintillation flashes and larger color windows, the slightly deeper overall depth percentage that these proportions produce contributes to a fuller face up color saturation, and the careful facet alignment and excellent polish maximize light return while minimizing windowing, inclusions are minimal to the naked eye and do not materially interfere with optical performance, the result is a gem that reads as clean and vivid under standard light sources.

When comparing hue and tone to gemstones from other famous localities, this Swiss blue topaz occupies a medium to medium dark tone with a vivid blue hue that leans slightly toward the cyan axis, it differs from London blue topaz which typically exhibits a darker tone and more pronounced blue green bias, it contrasts with traditional Santa Maria aquamarine from Minas Gerais Brazil which often shows a deeper, more oceanic blue with greener undertone and higher inherent tone for the same viewing conditions, it is also distinct from classic Ceylon sapphire which tends toward a velvety cornflower blue with higher saturation and different spectral responses due to sapphire crystal chemistry and higher refractive index, and it is markedly different from Paraiba tourmaline which sits on a neon blue green hue with exceptional saturation and electric tone that topaz cannot replicate. The irradiated Swiss blue topaz here presents a stable, intense face up color that is predictable for use in calibrated jewelry, the mixed brilliant faceting enhances perceived color uniformity versus step or cabochon cuts, and for buyers seeking a precise balance of vivid hue, eye clean clarity, and engineered brilliance, this Brazilian Swiss blue topaz from The Natural Gemstone Company represents a technically accomplished and visually reliable choice.