
1) Brilliantly colored 2) Decorative art 3) Horn 4) Larvae feed on nettles 5) Mottled cat colour 6) Mottled inlay material 7) Mottled material
Found on
https://www.crosswordclues.com/clue/tortoiseshell

Tortoiseshell or tortoise shell is a material produced from the shells of the larger species of tortoise and turtle, mainly the hawksbill turtle, which is an endangered species largely because of its exploitation for the material. The large size, fine colour and unusual form of the hawksbill`s scutes make it especially suitable. Tortoiseshell was....
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http://en.wikipedia.org/wiki/Tortoiseshell

ornamental material obtained from the curved horny shields forming the shell of the hawksbill turtle (Eretmochelys imbricata). The marbled, ... [4 related articles]
Found on
http://www.britannica.com/eb/a-z/t/64

A coat pattern in a cat that consists of a of a mosaic blend of red or its dilute cream and another base colour such as blue, chocolate, cinnamon and their dilute forms. i.e. a blue tortoiseshell, black tortoiseshell etc. Usually only found in females due to red/cream being sex linked to the X chromosome.
Found on
http://www.cat-world.com.au/glossary

A colour variant that is sex linked. It is very rare to find a tortoiseshell male cat, most are female.
Found on
http://www.cats.org.uk/cat-glossary/

Dark brown, mottled shell of certain species of sea turtle which can be moulded by heating, and thickened or enlarged by joining pieces together under pressure. It was especially popular for inlaid decoration on English and French furniture in the 17th, 18th and early 19th centuries (see boulle) , and for jewellery inlaid with piqué work in Britain …...
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http://www.encyclo.co.uk/visitor-contributions.php

Pale brownish amber glass with dark splotches.
Found on
http://www.glamorganantiques.co.uk/glossaryglass.htm

A popular material for 19th century jewelry and hair combs, tortoiseshell was banned and is no longer used for these items. There are very close plastic imitations of tortoiseshell. One technique to differentiate tortoise from its imitators is to touch the surface with a hot pin chemical odor.
Found on
http://www.indygem.com/pages/Glossary-of-Terms.html

[
n] - the mottled horny substance of the shell of some turtles 2. [n] - brilliantly colored 3. [n] - a cat having black and cream and yellowish markings
Found on
http://www.webdictionary.co.uk/definition.php?query=tortoiseshell

A coat pattern consisting of a mosaic blend of black and orange.
Found on
https://www.encyclo.co.uk/local/20189
calico cat noun a cat having black and cream and yellowish markings
Found on
https://www.encyclo.co.uk/local/20974
noun the mottled horny substance of the shell of some turtles
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.