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玳瑁
EntityQ2141546· pop 17· linked from 339 articles

Also known as tortoiseshell

thumb|Palau|Palauan Toluk made from tortoiseshell thumb|upright|Cabinet with tortoiseshell wikt:veneer|veneers thumb|French singing bird box with a case made out of tortoiseshell.Tortoiseshell or tortoise shell is a material produced from the shells of the larger species of tortoise and turtle, mainly the hawksbill sea turtle, which is a critically endangered species according to the IUCN Red List largely because of its exploitation for this trade. The large size, fine color, and unusual form of the hawksbill's scutes make it especially suitable. The distinctive patterning is referred to in na

Wikidata facts

Subclass of
animal product
Image
Peigne en écaille.jpg
Show 2 more facts
natural product of taxon
Testudines
Commons category
Tortoiseshell
Sources (1)

via Wikidata · CC0

Article · 中文

玳瑁,有时也称龟甲,在宝石学中被归类为有机宝石,特指玳瑁(一种海龜)的背甲,为。玳瑁宝石呈微透明至半透明,具蜡质至油脂光泽,摩氏硬度2.5,密度1.29 g/cm3,折射率1.55,韧性好,加热变软变暗,具热塑性,可切割。玳瑁饰品高贵典雅,有祥瑞幸福、健康长寿的象征,享有“海金”之称。

Abstract from DBpedia / Wikipedia · CC BY-SA

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