0.47 Ct. Madeira (Reddish Orange) Citrine from Brazil

This transparent Madeira citrine presented by The Natural Gemstone Company is a 0.47 carat emerald cut gem, precisely faceted to dimensions of 5.98 by 4.11 by 2.72 mm, exhibiting a vivid reddish orange hue and an excellent polish. The stone is cut in a classic emerald shape, with step facets that emphasize depth of color and clarity, and a table and pavilion relationship optimized to balance brilliance with color saturation. Clarity is graded as eye clean, evaluated at eye level, ensuring that no inclusions are apparent under normal viewing conditions, and the overall finish is of a high standard, with facet junctions and girdle symmetry consistent with professional lapidary practices. Origin is Brazil, a source renowned for quartz varieties, and enhancement is disclosed as heat treated, a common and accepted practice to develop and stabilize the warm Madeira tone. These objective specifications define the gem for use in precision settings where predictable proportions and reliable optical performance are required.

The story of this citrine begins in deep time, millions of years ago, within the geological environments characteristic of Brazil, where silica rich fluids migrated through voids and fractures in granitic pegmatites and volcanic host rocks. Under conditions of slowly changing temperature and pressure, quartz crystallized from these fluids to form well defined crystal structures, the atomic lattice incorporating trace iron impurities in minute concentrations. Natural thermal events in the crust, including regional metamorphism and localized heating from igneous intrusions, subjected these iron bearing quartz crystals to temperatures that could alter the iron oxidation state, producing a range of yellow to orange hues in some specimens. Over successive cycles of burial and uplift, these crystals were preserved within veins and vugs, their internal growth patterns and zoning recording the evolving chemistry and thermal history of their environment. In the modern lapidary process, controlled heat treatment is applied to refine and stabilize the color into the Madeira spectrum recognized in the trade, a technique that mirrors and accelerates natural thermal alteration, and which is routinely performed under regulated conditions to ensure uniformity and colorfastness while maintaining structural integrity.

From a gemological and design perspective, the emerald cut format of this citrine is particularly suited to showcasing the Madeira color with clarity and elegance, the long rectangular outline and truncated corners creating a disciplined canvas for the step cuts to reveal internal color distribution and broad flashes of reflective light. The stone’s modest dimensions and sub half carat weight make it appropriate for use as a focal element in rings with secure prong or bezel settings, as well as for pendant or earring designs where controlled color presentation is desired. The excellent polish enhances surface luster and reduces light leakage, contributing to the stone’s perceived saturation and visual depth. Because the gem has been heat treated, standard care recommendations include avoiding rapid temperature extremes and the use of harsh chemicals during setting and maintenance, while routine cleaning with warm soapy water and gentle brushing will preserve the finish and appearance. The Natural Gemstone Company provides full disclosure of treatment and origin, and the evaluation parameters reported reflect common industry standards for color intensity, clarity at eye level, cut considerations, and finish quality, enabling designers and gemologists to make informed decisions when incorporating this Madeira citrine into finished jewelry.