13.57 Ct. Purple Amethyst from Madagascar

This striking, transparent 13.57 carat pear shape purple amethyst offered by The Natural Gemstone Company is a well proportioned, faceted gem with dimensions of 19.44 x 13.30 x 9.87 mm, cut in a mixed brilliant style to maximize both light return and scintillation. The mixed brilliant cut combines a faceted crown designed for lively table reflections with a pavilion cut that returns light efficiently through the body of the stone, creating a pleasing balance of brilliance and depth. Evaluated at eye level as eye clean, this piece shows no visible inclusions to the unaided eye, and the excellent polish allows mirror like facet junctions that enhance contrast and sparkle. Originating from Madagascar and with no enhancements, the gem is offered in its natural state with medium color intensity, a saturation that provides a distinctly purple appearance without tipping into overly dark tones that can mute internal reflections, making it immediately wearable in rings, pendants, and bespoke settings.

From a gemological perspective, this amethyst demonstrates the characteristic vitreous luster and transparency associated with fine quartz, while the mixed brilliant pavilion and crown arrangement amplify its reflective qualities beyond what is commonly seen in simple step or checker cuts. Amethyst has a refractive index approximately between 1.544 and 1.553 and a relatively low dispersion, so it does not exhibit the same degree of fire or spectral flashes as gems with higher dispersion values, such as diamond, white sapphire, or topaz. Compared with other members of the quartz family, like citrine or smoky quartz, this Madagascar amethyst tends to command greater appeal for collectors and connoisseurs when color and clarity align, because the purple hue is often regarded as more desirable and rarer in fine sizes. Compared to colored gemstones in a similar visual category, such as tanzanite or certain purple sapphires, amethyst typically offers more consistent transparency and greater availability at larger sizes, while tanzanite exhibits stronger pleochroism and sapphires show higher refractive index and dispersion, creating more intense brilliance and fire in those stones. The practical effect for the buyer is that this amethyst will deliver pleasing, lively reflections and crisp facet contrast, while offering a different aesthetic to high dispersion stones where fire is a dominant visual feature.

For the educated buyer, several specific attributes make this 13.57 carat Madagascar amethyst a polished and practical investment. The eye clean clarity grade reduces the need for intricate settings to mask inclusions, preserving design flexibility and potentially lowering mounting costs relative to included stones that require protective bezels. The excellent polish not only enhances immediate visual appeal, it also improves long term wearability, as smoother facets resist accumulating dirt and show better light return between cleanings. The absence of enhancement is significant because heat treatment is a common practice to alter or stabilize colors in various gem species, and untreated material retains a premium for collectors who seek natural color origin and treatment history, particularly when paired with a reputable source like Madagascar, which is known for producing fine clean amethysts with attractive medium intensity colors. With a hardness of seven on the Mohs scale, quartz offers robust daily wearability when set thoughtfully, though educated buyers will note that protective settings are recommended for rings and bracelets to limit abrasion. The Natural Gemstone Company can provide further services such as additional views, mounted mock ups, or guidance on the optimal metal and setting to showcase the pear shape and mixed brilliant cutting style, ensuring the gem’s reflective strengths and color are fully realized in the finished piece.