Faceted gemstone in plastic display case

The provided image displays a loose, faceted gemstone housed inside a small, square clear plastic display jar or case. The gemstone features a rectangular or cushion-like step-cut arrangement with parallel facets along its pavilion and crown, displaying alternating zones of purple and yellowish-brown or clear tones characteristic of bi-color quartz varieties. To the left of the gemstone, printed on the inner plastic surface of the container, is visible dark text reading 'jtv'. The plastic case is square with rounded corners and a fitting lid, showing light surface glare and minor dust particles. Regarding context, the owner-supplied attribution states the material is ametrine, which remains unverified by physical testing from the photograph alone. The identification in the name is purely descriptive based on the visible physical form, as gemstone material identification and internal crystal properties cannot be definitively confirmed without gemological laboratory testing. The overall object appears to be a commercially packaged loose gemstone sample, possibly originating from a televised shopping network or retail gem distributor given the printed logo.

Based on what I can see in the photograph, the item is a loose, faceted rectangular or cushion-step-cut gemstone housed in a clear plastic display jar bearing a 'jtv' logo. The stone displays visual characteristics featuring zones of purple and yellowish-brown tones, and per user submission: attributed to ametrine. However, I cannot verify the material, internal crystal properties, or origin from a photo alone, as gemstone material identification requires physical and gemological laboratory testing. My appraisal estimate assumes the owner's claim regarding the ametrine identification is correct. Under this working assumption, commercially packaged bi-color quartz varieties of this size and appearance typically trade within a retail market range of $30 to $60, largely driven by mass-market distribution and jewelry supply demand rather than rarity. If the attribution is incorrect, or if further testing reveals the material is a synthetic substitute, colored glass, or standard treated quartz rather than natural ametrine, the market value would likely decrease significantly, falling closer to $10 to $20 as a generic collector sample. To establish the true nature, natural origin, and potential value of the piece, physical inspection and advanced gemological testing would be necessary.