由某些海龜殼與陸龜殼表面所覆蓋的角質薄板所製成的材料。十九世紀時廣泛用於鑲嵌材料、首飾、髮梳與其他裝飾品，但現今已禁用。

龜甲(P,,U,繁體中文-偏好,D,,)
玳瑁殼(,U,繁體中文-非偏好,UF,U,U)
kuei chia(P,,U,韋氏拼音-偏好,UF,U,U)
guī jiǎ(P,,U,漢語拼音-偏好,UF,U,U)
gui jia(P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
tortoise shell(P,,U,英文-偏好,D,U,N)
shell, tortoise(,U,英文-非偏好,UF,U,N)
tortoiseshell(,U,英文-非偏好,UF,U,N)
schildpad(materiaal)　(P,,U,荷蘭語-偏好,D,U,U)
écaille de tortue(P,,U,法語-偏好,D,U,N)
tartaruga(P,,U,Italian-偏好,D,U,N)
caparazón de tortuga(P,,U,西班牙語-偏好,D,U,N)
carey(,U,西班牙語-非偏好,AD,U,U)
caparazón de tortuga carey(,U,西班牙語-非偏好,AD,U,U)
caparazón(tortuga)　(,U,西班牙語-非偏好,UF,U,N)

藝術與建築詞典根目錄
....材料層面
........材料 (材料層面)
............材料
................<依來源區分之材料>
....................<生物材料>
........................動物材料
............................<角蛋白材料>
................................龜甲

藝術與建築詞典根目錄
....代理者層面
........活體有機體
............真核生物 (域)
................動物界 (界)
....................<動物或人體構造>
........................龜甲

distinguished from....	殼(動物材料)
derived from....	龜鱉目 (目)

英文....	Material made from the thinly sliced horny plates covering the shells of some turtles and tortoises. It was popular in the 19th-century for inlays, jewelry, hair combs, and other ornaments, but its use is banned today.
荷蘭語....	Substantie die afkomstig is van de hoornplaten die de schilden van sommige schildpadden bedekken.
西班牙語....	Sustancia que forma placas callosas y que cubren la caparazón de algunas tortugas.

龜甲............	[AS-Academia Sinica]
.................	國家教育研究院－雙語詞彙、學術名詞暨辭書資訊網 August 14, 2010
.................	寶石圖鑑 162
玳瑁殼............	[AS-Academia Sinica]
.................	國家教育研究院－雙語詞彙、學術名詞暨辭書資訊網 August 14, 2010
.................	故宮後設資料需求規格書 19
.................	大英百科全書線上繁體中文版 August 14, 2010
tortoise shell............	[VP]
.................	CDMARC Subjects: LCSH (1988-)
.................	RILA, Subject Headings (1975-1990)
.................	Random House Dictionary of the English Language (1987)
.................	Tesauro de Arte & Arquitectura (2000-)
.................	AATA database (1995-) 129869 checked 26 January 2012
shell, tortoise............	[VP]
.................	Getty Vocabulary Program rules
tortoiseshell............	[VP]
.................	Webster's Third New International Dictionary (1961)
.................	Random House Dictionary of the English Language (1987)
schildpad(materiaal)............	[Bureau AAT]
.................	AAT-Ned (1994-)
écaille de tortue............	[VP]
.................	CHIN database
tartaruga............	[VP]
.................	ICCD database (1988-)
caparazón de tortuga............	[CDBP-DIBAM]
.................	Tesauro de Arte & Arquitectura (2000-)
.................	Fleming and Honour, Diccionario de Artes Decorativas (1987) 155
carey............	[CDBP-DIBAM]
.................	Moliner, Diccionario de uso del español (2004) 525
.................	Fleming y Honour, Diccionario de Artes Decorativas (1987) 155
caparazón de tortuga carey............	[CDBP-DIBAM]
.................	Fleming y Honour, Diccionario de Artes Decorativas (1987) 155
caparazón(tortuga)............	[VP]
.................	Tesauro de Arte & Arquitectura (2000-)
.................	Moliner, Diccionario de uso del español (2004) 1:507
Subject:............	[Bureau AAT]
.................	CHIN database
.................	AATA database (1995-) 129869 checked 26 January 2012
.................	Van Dale Engels-Nederlands (1989)

Getty AAT: 300011837 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300011837
聯合目錄： 龜甲 、玳瑁殼 、kuei chia 、guī jiǎ 、gui jia 、tortoise shell 、shell, tortoise 、tortoiseshell 、schildpad 、écaille de tortue 、tartaruga 、caparazón de tortuga 、carey 、caparazón de tortuga carey 、caparazón