Bağa
4 usagesShort answer
In the dictionary sense, sea-turtle shell — a material regulated under CITES. In the trade, however, “bağa” most often denotes cast phenolic resin of the catalin family rather than shell. The two senses share one word; only measurement, not the term, tells them apart.
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Tests you can do at home: Transmitted light · Hydrostatic specific gravity · Simichrome test (may leave a mark on the surface; try it only on a hidden spot)
Meanings in the trade
These are the recorded usages of the term: publications, catalogues and the market. Each usage carries its own source grade and is not a definition.
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Article or academic publicationCast phenolic
Piyasada 'bağa' çoğu zaman kaplumbağa kabuğunu değil, katalin grubu fenolik reçineyi anlatır (s.170 n.15).
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.BookTortoiseshell
Malzeme maddesi 'Bağa' (s.40): deniz kaplumbağası kabuğu (CITES); katalog 53a-f (s.153-156).
- Evidence grade C — institutional seller. The grade states the type of the source, not the truth of the claim.Dealer siteTortoiseshell
4 Parmak Gunluk Baga Tesbih Full Gumus Tasarim
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.BookTortoiseshell
Katalog altyazısı (s.79): Bağa, HÇ
Canonical mapping
A mapping is not a conclusion: it is a claim about what the term points to, not a measurement of the material.
No material mapping is shown: a regulated material (CITES) is assigned only by positive identification; a market claim alone does not grant this code.
TortoiseshellEvidence grade A — publication. The grade states the type of the source, not the truth of the claim.Evidence grade C — institutional seller. The grade states the type of the source, not the truth of the claim.Cast phenolicEvidence grade A — publication. The grade states the type of the source, not the truth of the claim.
How to tell — and what it does not tell
The candidates do not agree. The properties below are separated by candidate; each heading carries that candidate's code and its strongest source grade.
TortoiseshellEvidence grade A — publication. The grade states the type of the source, not the truth of the claim.
This text has so far been written only in Turkish; the text you see is in Turkish.
How to tell
Specific gravity Bağanın (kaplumbağa kabuğu) özgül ağırlığı 1,26–1,35'tir (Webster 1994, Hainschwang ve Leggio 2006 Tablo 1; O'Donoghue 2006 tablosu); boynuzla aynı aralıktır. Taklitleri aynı tabloda: selüloz asetat 1,29–1,40, selüloit 1,36–1,42, fenolik 1,25–1,30. Özgül ağırlık tek başına bağayı taklidinden ayırmaz.
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.The Characterization of Tortoise Shell and its ImitationsHainschwang, T., Leggio, L.2006
Tortoise shell 1.54 1.26-1.35
Accessed on:
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Gems: Their Sources, Descriptions and Identification, 6th ed.O'Donoghue, M. (ed.)2006
1.55 - - - 2.5 1.26 to 1.35 Tortoise-shell and horn
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Cast phenolicEvidence grade A — publication. The grade states the type of the source, not the truth of the claim.
This text has so far been written only in Turkish; the text you see is in Turkish.
How to tell
Specific gravity Fenolik reçine (faturan/bakalit/katalin) 1.35–1.38 g/cm3 (Falabella 2016, döküm boncuk ölçümü).
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African Trade (BEADS 28)Rosanna Falabella2016
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History and names
Production period 1951–1952 Bernstein-Manufaktur Hamburg 'Edelkunstharz' PF boncuklarını Sudan'a satar (Kuhn 2002, Falabella içinde aktarım). Tek kaynak (ikincil aktarım).
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African Trade (BEADS 28)Rosanna Falabella2016
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Production method Döküm PF'de PARLAKLIK VE BULANIKLIK MÜHENDİSLİK ÜRÜNÜDÜR, yaşlanma izi değil: Ellis'in 1923'teki 'Yapay Kehribar' bölümü balık pulu ve toz mika ile 'parıldama etkisi', mumlarla 'bulanık kehribar etkisi' ve çok çeşitli boyalar tarif eder. 1924 tarihli Bakelite 'Pearl Colors' renk kartı da sedefli boncuğu belgeler.
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African TradeFalabella, Rosanna2016
substances such as fish scales and powdered mica to produce a shimmering effect... waxes
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- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African TradeFalabella, Rosanna2016
A 1924 color chart showing beads of Bakelite Pearl Colors
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Trade-name history
- Evidence grade B — auction or explicit attribution. The grade states the type of the source, not the truth of the claim.Cast Phenolic Resin (PHS Virtual Museum)Holdsworth, Ian
They may have a high degree of transparency, translucency or opacity
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Trade-name history
- Evidence grade B — auction or explicit attribution. The grade states the type of the source, not the truth of the claim.The Gemstone BookCIBJO Coloured Stone Commission2022
Correct exemples: « imitation amber », « imitation turquoise »
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- Evidence grade B — auction or explicit attribution. The grade states the type of the source, not the truth of the claim.16 CFR 23.26 — Misuse of the word varietal name
It is unfair or deceptive to mark or describe an industry product with the incorrect varietal name.
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Production method Döküm fenolik 'turnery' (torna) malzemesi olarak çubuk, levha ve boru halinde üretildi; boncuk ve bilezikler bu ham stoktan talaşlı imalatla yapıldı. Tesbih tanesi üretimi bu zincirin parçasıdır.
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African Trade, BEADS 28:3-15Falabella, Rosanna2016
Castings in the form of rods, sheets, and tubes were the raw stock used to make items like beads and bangles
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Production method Şemsiye sapı gibi özel biçimler kurşun ve cam kalıplara dökülerek yapıldı; kalıp kurumadan sonra kırılarak çıkarıldı. Bu, aynı stok malzemenin tesbih dışı ürünlerini açıklar (şemsiye sapı, pipo ağzı).
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African Trade, BEADS 28:3-15Falabella, Rosanna2016
special shapes like curved umbrella handles were also made by pouring PF resin into lead and glass molds
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Show all (2)
Other
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African TradeFalabella, Rosanna2016
Imitation Amber Beads of Phenolic Resin from the African Trade
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Other
- Evidence grade B — auction or explicit attribution. The grade states the type of the source, not the truth of the claim.Cast Phenolic Resin (PHS Virtual Museum)Holdsworth, Ian
thick sections are not stable and tend, over the years, to craze internally
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Sources
A grade states the strength of the source, not of the conclusion.
Recorded usages: 4Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Evidence grade C — institutional seller. The grade states the type of the source, not the truth of the claim.
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Sabırla Selamete Tane Tane… Osmanlı Kültüründe Tesbih ve Hüsnü Dikeçligil Tesbih KoleksiyonuTekin, Kemal Hakan2014ISBN 978-605-65152-0-0 s.40
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- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Türkiye'de Tesbih Koleksiyonu Kültürü: Malzeme Fetişizmi ve OtantisiteDeğirmenci, Koray2018YEDİ 20 (2018), DOI 10.17484/yedi.423601 s.170
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- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.The Characterization of Tortoise Shell and its ImitationsHainschwang, T., Leggio, L.2006
Tortoise shell 1.54 1.26-1.35
Accessed on:
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Gems: Their Sources, Descriptions and Identification, 6th ed.O'Donoghue, M. (ed.)2006
1.55 - - - 2.5 1.26 to 1.35 Tortoise-shell and horn
Accessed on:
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African Trade (BEADS 28)Rosanna Falabella2016
Accessed on:
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African TradeFalabella, Rosanna2016
substances such as fish scales and powdered mica to produce a shimmering effect... waxes
Accessed on:
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African TradeFalabella, Rosanna2016
Imitation Amber Beads of Phenolic Resin from the African Trade
Accessed on:
- Evidence grade B — auction or explicit attribution. The grade states the type of the source, not the truth of the claim.Cast Phenolic Resin (PHS Virtual Museum)Holdsworth, Ian
They may have a high degree of transparency, translucency or opacity
Accessed on:
- Evidence grade B — auction or explicit attribution. The grade states the type of the source, not the truth of the claim.Cast Phenolic Resin (PHS Virtual Museum)Holdsworth, Ian
thick sections are not stable and tend, over the years, to craze internally
Accessed on:
- Evidence grade B — auction or explicit attribution. The grade states the type of the source, not the truth of the claim.The Gemstone BookCIBJO Coloured Stone Commission2022
Correct exemples: « imitation amber », « imitation turquoise »
Accessed on:
- Evidence grade B — auction or explicit attribution. The grade states the type of the source, not the truth of the claim.16 CFR 23.26 — Misuse of the word varietal name
It is unfair or deceptive to mark or describe an industry product with the incorrect varietal name.
Accessed on:
- Evidence grade A — publication. The grade states the type of the source, not the truth of the claim.Imitation Amber Beads of Phenolic Resin from the African Trade, BEADS 28:3-15Falabella, Rosanna2016
Castings in the form of rods, sheets, and tubes were the raw stock used to make items like beads and bangles
Accessed on: