0.22 Ct. Alexandrite from Tanzania

One transparent alexandrite, weighing 0.22 carat, is presented by The Natural Gemstone Company, round in outline with dimensions of 3.83 by 3.77 by 2.40 mm. The gem has been fashioned with a mixed brilliant cut, combining a faceted pavilion with a modified crown to balance dispersion and light return. Clarity is graded as slightly included when evaluated at eye level, inclusions that are consistent with natural material and that do not significantly disrupt the overall transparency. Color exhibits a clear and repeatable change, shifting from a green tone under fluorescent lighting to a purple tone under incandescent lighting, with an overall intense color saturation. The polish is reported as excellent, the surface facets displaying crisp facet junctions and smooth planes, and the stone is unheated and untreated, originating from Tanzania.

Optical characteristics are defined by the stone size and the mixed brilliant faceting, which together produce a combination of scintillation and flash color that emphasizes the alexandrite effect. At 3.83 by 3.77 mm and a depth of 2.40 mm the table presents a balanced face up appearance while the pavilion facets contribute to light return under most lighting conditions. Slight inclusions are visible at eye level, typical for a natural alexandrite of this size, and they can appear as fine needles and small clouds that may catch light and add character without dominating the visual field. The change from green to purple is pronounced and consistent, appearing as a cool green in daylight or fluorescent environments, and as a warm bluish purple to violet under incandescent lighting, the transition enhanced by the gem s transparency and the precise cutting for mixed brilliance.

For practical design and wear considerations the gem s dimensions and proportions allow for multiple conventional mounting options. The stone will seat securely in a four or six prong head designed for a 3.8 mm round, the slightly shallow depth of 2.40 mm lending itself well to a low profile setting for everyday wear. A bezel setting will protect the girdle while slightly muting the perceived size, whereas a well proportioned prong setting will maximize the apparent diameter and permit more light interaction for pronounced color change. Metals will influence perceived color, white metals such as platinum or white gold will tend to emphasize the green phase and provide a crisp, contemporary contrast, warm metals such as yellow or rose gold will enhance the purple phase and introduce a softer, warmer overall appearance. For bezel or cup designs allow internal dimensions to accommodate the 3.83 by 3.77 mm table and provide a seat depth that does not impinge on the pavilion at 2.40 mm, specifications that a competent lapidary jeweller can apply directly when fabricating a custom head.

When composing a custom piece with complementary gems consider accents that either contrast to highlight the color change, or echo the two dominant tones for a cohesive palette. A halo of small white melee diamonds, each approximately 1.0 to 1.5 mm in diameter, will provide a bright, neutral frame that enhances both the green and purple phases by contrast and by increasing perceived brilliance. For a more chromatic approach, pair the alexandrite with violet spinel or lavender sapphire accents to reinforce the purple phase under warm lighting, placing these stones as side accents in a three stone configuration or as paired trapezoids in a more geometric shoulder design. To amplify the green phase select tsavorite garnets or chrome tourmalines in matched small sizes, these lively green accents placed as bead set shoulders or as a tapered channel will lend vibrancy under daylight conditions. Metal choices interact with these pairings, white metals will make the diamonds and green accents read cleaner and brighter, warm metals will harmonize with the violet accents and deepen the purple impression. For a balanced design consider alternating small green and violet stones around a diamond halo, or use a split shank set with pavé diamonds flowing into a trio of colored side stones, each approach allowing the central alexandrite to manifest its color change while creating a dynamic, integrated composition.

The Natural Gemstone Company presents this alexandrite as a versatile central gem for bespoke pieces where optical drama and natural character are desired. The gem s unenhanced origin from Tanzania, combined with an excellent polish and an intense color change, makes it suitable for ring, pendant, or stud settings where lighting conditions will vary and reveal the stone s full range. For clients seeking a durable daily wear piece consider a secure prong or bezel mount in a robust metal, and for those focused on display or occasional wear a lighter head design will maximize the gemstone s visual performance. Precise setting dimensions and complementary gemstone specifications can be provided to a bench jeweller to ensure the finished design respects the stone s 3.83 by 3.77 by 2.40 mm proportions, and The Natural Gemstone Company is available to assist with technical details and high resolution imagery to support custom fabrication.