The complete index of Zultpedia entries — every published article, comparison, FAQ, property guide, specimen record, education guide, glossary term, and birthstone reference, listed by category and date. Each entry is fact-checked and cited; tier and reading time appear beside the title.
ARTICLES
29- № 001Cleaning and Storing Color-Change Diaspore
- № 002Common Treatments on Other Color-Change Gems — and Why Diaspore Is Different
- № 003Export Documentation for Türkiye-Sourced Zultanite
- № 004How Master Cutters Orient Diaspore Rough
- № 005How Zultpedia Resolves Conflicting Sources on Zultanite
- № 006Identifying Natural Versus Synthetic Diaspore
- № 007Lab Reports — What GIA and IGS Document for Color-Change Diaspore
- № 008Metamorphic Geology of the İlbir Mountains — Zultanite Source Formation
- № 009Mining Conditions at the İlbir Mountains — Zultanite Source Geology
- № 010Pleochroism vs Color Change in Zultanite — Two Optical Effects, One Crystal
- № 011The Absorption Spectrum of Color-Change Diaspore
- № 012The Anatolian Heritage of Zultanite — Names, Geography, Diaspore Source
- № 013The Color-Change Phenomenon in Zultanite — How and Why It Works
- № 014The Durability of Zultanite Jewelry — Hardness Versus Toughness
- № 015The History of Color-Change Diaspore — From Haüy to the İlbir Mountains
- № 016The İlbir Mountains — The Single-Source Origin of Color-Change Diaspore
- № 017The Lapidary of Zultanite — Why 97% of the Rough Is Lost in Cutting
- № 018The Trace-Element Chemistry of Zultanite — Iron, Chromium, and the Color-Change Mechanism
- № 019What Is Zultanite? The Color-Change Diaspore from Türkiye
- № 020Why Zultanite Has No Secondary Locality
- № 021Why Zultanite Is Rare — Single Source, Cleavage Loss, and Trace Chemistry
- № 022Why Zultanite Is Sold Untreated
- № 023Zultanite — Fracture-Filling and Coating Detection in Gemological Labs
- № 024Zultanite Chain of Custody — From İlbir Mountains to the Buyer
- № 025Zultanite Fact-Check Cadence and Drift Management
- № 026Zultanite Lab Reports — Why “No Treatment” Is the Documented Norm
- № 027Zultanite Resizing — Why Heat-Based Ring Sizing Threatens the Stone
- № 028Zultanite Ring Settings — Bezel vs Prong Durability Trade-Offs
- № 029Zultpedia Source Hierarchy for Zultanite Entries
COMPARISONS
7- № 030Zultanite vs Alexandrite — Two Gems, One Phenomenon, Different Propositions
- № 031Zultanite vs Ametrine — Color Change vs Color Zoning
- № 032Zultanite vs Andalusite — Two Türkiye-Adjacent Pleochroic Gems Compared
- № 033Zultanite vs Color-Change Garnet
- № 034Zultanite vs Color-Change Sapphire
- № 035Zultanite vs Csarite vs Ottomanite vs Turkizite — One Gem, Four Names
- № 036Zultanite vs Opal — Color Change vs Play-of-Color
PROPERTY GUIDES
9- № 037Cleavage of Zultanite — Perfect on {010}
- № 038Color Change of Zultanite — Three Illuminants, One Crystal
- № 039Crystal Habit of Diaspore — Tabular, Acicular, Massive
- № 040Hardness of Zultanite — 6.5 to 7 on the Mohs Scale
- № 041Optical Character of Zultanite — Biaxial Positive
- № 042Pleochroism of Zultanite — Three Crystallographic Colors
- № 043Refractive Index of Zultanite — 1.682 to 1.752
- № 044Specific Gravity of Zultanite — 3.30 to 3.39
- № 045Toughness of Zultanite — Why Hardness Alone Lies
EDUCATION
8- № 046Buying Zultanite Without Getting Cheated — A Buyer’s Checklist
- № 047Caring for Zultanite Jewelry — Cleaning, Storage, and Wear
- № 048How Much Is Zultanite Worth? — Price and Value Guide
- № 049How to Identify Zultanite — A Five-Step Field Guide
- № 050How to Insure Zultanite Jewelry
- № 051How to Photograph Zultanite Color Change
- № 052How to Read a GIA Zultanite Report
- № 053How to Spot Fake Zultanite — A Field Checklist
BIRTHSTONES
12- № 054April Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 055August Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 056December Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 057February Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 058January Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 059July Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 060June Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 061March Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 062May Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 063November Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 064October Birthstones — Modern, Traditional, and Where Zultanite Fits
- № 065September Birthstones — Modern, Traditional, and Where Zultanite Fits
SPECIMENS
8- № 0660.78-Carat Zultanite — Round Brilliant, Moderate Color Change
- № 0671.25-Carat Zultanite — Pear Cut, Strong Color Change
- № 0681.95-Carat Zultanite — Marquise Cut, Strong Color Change
- № 0692.08-Carat Zultanite — Emerald Cut, Moderate Color Change
- № 0703.10-Carat Zultanite — Cushion Cut, Champagne-Phase Visible
- № 0714.50-Carat Zultanite — Oval Brilliant, Strong Color Change
- № 0726.30-Carat Zultanite — Cushion Cut, Exceptional Color Change
- № 0737.25-Carat Zultanite — Faceted Oval, Strong Color Change
FAQ
5GLOSSARY
31- № 079Alexandrite Effect
- № 080Asterism
- № 081Bauxite
- № 082Biaxial Positive
- № 083Birefringence
- № 084Cabochon
- № 085Chromophore
- № 086Cleavage
- № 087Color Change
- № 088Crown
- № 089Culet
- № 090Diaspeírō
- № 091Dispersion
- № 092Facet
- № 093Fluorescence
- № 094FTIR Spectroscopy
- № 095Girdle
- № 096Illuminant
- № 097Inclusion
- № 098LA-ICP-MS
- № 099Lustre
- № 100Metamorphism
- № 101Mohs Scale
- № 102Optic Axis
- № 103Orthorhombic
- № 104Pavilion
- № 105Pleochroism
- № 106Refractive Index
- № 107Specific Gravity
- № 108Table
- № 109UV-Vis-NIR Spectroscopy