Is My Turquoise Jewelry Valuable? What an Appraiser Looks At

Whether turquoise jewelry is valuable comes down to six things an appraiser examines: the stone's condition and source, the silver and construction, the maker, the age, the piece's own condition, and its documentation. No single feature settles it — a signed piece can be minor, an unsigned piece can be important. This page walks the same checklist an experienced eye walks.

Mateo's Field Notes

1. The stone: natural or treated, and from where? The stone is usually the largest single variable. Natural turquoise is the rare fraction — about 15 percent of world production is hard enough to use untreated, per Lowry — and named-mine attribution is, in Lowry's words, "the most influential rarity of a turquoise's value." (Lowry, Turquoise: The World Story, ~lines 9871–9874, 9364–9365) The full driver breakdown is at What Makes Turquoise Valuable; the treatment tiers at Natural vs. Stabilized.

2. The construction: hand or machine? Hand fabrication shows its process — slight stamp variation, hand-formed bezels, solder joints, an honest back. Machine production shows uniformity and casting lines. Adair recorded the economics behind this tell back in the 1940s: "Silver which is well designed and beautifully finished by hand can only be imitated at considerable expense by machinery. But a cheap, badly made piece may be imitated at a 'dime a dozen.'" (Adair 1944, ~p. 184) Quality hand work is what mass production cannot cheaply fake — which is exactly why it holds value. The physical checks are detailed at Authentic vs. Imitation.

3. The maker. A documented hallmark tied to a known artist changes the conversation — that is what the A–Z directory behind the hallmark identification guide exists for. But absence of a mark is not absence of value: most makers were anonymous into the mid-twentieth century (Hougart 5e, front matter), so early unsigned work is normal — see Unsigned and Unmarked Jewelry and Do Hallmarks Add Value?

4. The age. Era is read from construction — silver stock, findings, stone cut, wear — not from a seller's story. Frank's warning is worth carrying: even a chemical finding of coin silver "is of little value for indicating age," since some smiths used U.S. coinage long after the early period "and the fakers use it even now." (Frank, Indian Silver Jewelry of the Southwest 1868–1930, ~p. 13) Start with How Old Is My Jewelry? and go deep at Dating by Construction.

5. The condition. Original surface, intact stones, and honest wear beat aggressive polishing and replaced stones. Turquoise itself testifies: Lowry documents that stone near the matrix is most prone to color change and that density governs color stability against skin oils (Lowry, ~lines 8942–8956), and Rosnek notes low-grade stone tends to fade. A stone that has held deep color for decades is evidence of grade; a mismatched bright stone in an old bezel is evidence of replacement.

6. The paper. Documentation converts opinion into value. Lowry cites the Federal Trade Commission guidance that a written guarantee should describe "the grade, source, and condition of the gemstone." (Lowry, ~lines 9810–9816) Receipts, gallery records, collection history, and written condition statements all count. And one caution from the same source: "The term pawn does not designate whether the turquoise stones are natural, treated, plastic, glass, or some other imitation" (Lowry, ~lines 5682–5687) — "old pawn" is a history, not a grade. See Old Pawn Explained.

Related Entries

Stone value drivers: What Makes Turquoise Valuable. Age: How Old Is My Jewelry? Marks: Do Hallmarks Add Value? Authenticity tests: Authentic vs. Imitation. Pawn history: Old Pawn Explained. Documented, source-described turquoise jewelry is at tskies.com →