Documentation method
The Ledger Standard
A repeatable record for identity, measurements, construction, treatment, origin evidence, condition, and media.
1. Identity
Every finished stone receives one permanent Ledger ID. The photographs, video, measurements, and sales destination in that record must refer to the same physical stone.
2. Measurements
Weight is stated in carats with its evidence. Verified length, width, and depth are stated in millimeters. Where analog caliper photographs do not support a reliable numerical reading, dimensions remain unverified rather than being guessed. Shape and profile are described separately so a face-up outline is not mistaken for setting depth.
3. Construction and treatment
Solid opal, doublet, and triplet describe construction. Treatment status is a separate disclosure. Neither is inferred from appearance alone; unknowns remain unpublished or are clearly marked pending.
4. Origin evidence
Origin is paired with an evidence level: documented, seller-stated, or unknown. A locality name is not used merely because a stone resembles material associated with that field.
5. Condition and inclusions
Visible cracks, chips, pits, sand, matrix, polish features, and other relevant observations are described and photographed when present. Seller inspection is not a substitute for laboratory examination.
6. Lighting, photography, and directionality
Lighting conditions and meaningful image adjustments are disclosed. Multiple angles and movement video show how play-of-color changes with direction. Color is not guaranteed to appear identical on every display.
Each caption describes the view actually shown. A rotated face is not labeled as a back or edge profile. Missing views are documentation gaps to address, not evidence that the hidden surface is free of features. The original recordings used on current stone pages have audio removed without changing color, lighting, speed, or stabilization.
Seller record, not laboratory report
A Ledger entry organizes seller-observed facts and provenance. It is not an independent gemological report, insurance appraisal, or guarantee of value or setting suitability.
Editorial method
The Opal Ledger publishes its buyer guides as organizational editorial content, not as articles by a claimed independent gemologist. General technical statements are checked against linked primary references, including GIA, Geoscience Australia, and NIST. Those organizations have not endorsed our business or examined our stones.
The October 1, 2026 buyer-education series was planned with RightBlogger keyword research and prepared with AI-assisted drafting and editing. Search data helps identify useful questions; it does not establish gem facts, market value, or professional credentials. We distinguish source-backed background from seller observations and unanswered questions in the exact-stone records.
We do not manufacture customer reviews, expert credentials, laboratory findings, mine documentation, or sales results. If you notice an error or can provide relevant documentation, contact us with the page URL and Ledger ID. A new document changes only the claims it actually supports.