1.64 Ct. Spinel from Tanzania

This 1.64 carat cushion shape blue spinel from Tanzania is presented by The Natural Gemstone Company with precise measurements of 7.70 by 5.34 by 4.25 millimeters, resulting in an overall depth of approximately 65 percent relative to the average of the length and width. The gem is finished in a mixed brilliant cut, a deliberate combination of brilliant style facets on the crown and calibrated step or elongated facets on the pavilion, engineered to balance scintillation with color saturation in an elongated cushion outline. The table and crown faceting strategy emphasize dispersed light return through a relatively broad table, while pavilion faceting has been arranged to maintain internal reflection and preserve tone across the length of the stone. Clarity is graded slightly included at eye level, consistent with small pinpoint crystals and discrete feathering that are positioned primarily off the main table, permitting strong light transmission and maintaining integrity of face up appearance. Polish is reported as excellent, the facet junctions meet cleanly and facet planes present high quality finish, and importantly, there has been no enhancement or heat treatment applied, the spinel remaining in its natural state as extracted from Tanzanian deposits.

From an optical and gemological perspective this blue spinel exemplifies several of the mineral family characteristics that informed cutting and grading decisions. Spinel is isotropic with a refractive index in the region of 1.712 to 1.719, displaying single refractivity and an absence of pleochroism, which simplifies orientation during cutting since color will remain uniform regardless of viewing axis. The mixed brilliant design here was chosen to maximize the medium intense color intensity, enabling the pavilion steps to concentrate color while the crown brilliants scatter light to retain lively sparkle without washing out the tone. The specific gravity of spinel around 3.58 to 3.61 contributes to a weighty feel for its size, making this 1.64 carat stone present with substantial presence in hand or mounted. The internal characteristics that define the slightly included clarity grade do not materially impair durability, given spinel s robust hardness near 8 on the Mohs scale, and the excellent polish enhances abrasion resistance while producing crisp facet reflections. For mounting recommendations, a bezel or secure prong setting that protects the corner facets of this cushion rectangle will best preserve the proportioned depth and allow the table to serve as the primary light window, while an open back or gallery may accentuate the stone s natural dispersion and visual depth.

Beyond its technical attributes, this blue spinel carries the classical and contemporary metaphysical associations that many knowledgeable collectors and wearers appreciate. Traditionally attributed to qualities of clear communication and emotional equilibrium, blue spinel is often paired with practices focused on throat chakra alignment and articulate self expression. The medium intense blue in this specimen is believed to facilitate calm thinking under pressure, to support focused dialogue, and to temper reactive emotional states with measured clarity. Practitioners who work with gemstones for subtle energy modulation describe spinel as an amplifier that harmonizes intent, meaning that when it is set into jewelry and worn regularly, it can be used as a tactile prompt for mindful speech, thoughtful listening, and steady interpersonal presence. In meditative contexts the stone is said to encourage a steady breath and cooling of agitated thought patterns, making it useful for people engaged in public speaking, negotiation, or creative collaboration.

Care and usage advice merges practical gemology with metaphysical practice, acknowledging both the measurable and the experiential. Physically, clean this spinel with warm soapy water and a soft brush, avoid harsh chemicals and ultrasonic cleaning if the mounting is stressed, and choose protective settings that reduce exposure to knocks at bezel corners. Energetically, those who seek to work with the stone s reputed properties recommend carrying it on the person or wearing it close to the throat to reinforce communicative aims, combining intentional rituals such as short daily reflections or focused breath work to orient attention toward desired outcomes. Because this spinel is untreated, its natural origin from Tanzania and its unenhanced clarity and color make it a particularly authentic choice for collectors who value provenance and minimal intervention. The Natural Gemstone Company provides this gem with full disclosure on its cutting style, clarity assessment, and origin, offering a specimen that unites technical refinement with the understated metaphysical qualities historically associated with blue spinel.