A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z [Introduction]

NACRE NP

PT MOTHER-OF-PEARL

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NAIL

RT HOOF
RT HORN
BT ANIMAL
NT ELEPHANT NAIL
NT HUMAN NAIL

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NANGKA WOOD TE

NARWHAL HORN NP

PT NARWHAL TOOTH

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NARWHAL IVORY

BT WHALE IVORY

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NARWHAL TOOTH

BT WHALE TOOTH
NT NARWHAL IVORY
NP NARWHAL HORN
NP NARWHAL TUSK
NP UNICORN HORN

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NARWHAL TUSK NP

PT NARWHAL TOOTH

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NASSA SHELL

BT SHELL

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NATICA NP

PT NATICA SHELL

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NATICA SHELL

BT SHELL
NP NATICA

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NATRON

BT MINERAL

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NAUTILUS NP

PT NAUTILUS SHELL

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NAUTILUS SHELL

BT SHELL
NP NAUTILUS

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NENTA SHELL

BT SHELL

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NEPHRITE

RT JADE
RT JADEITE
BT MINERAL

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NERITA NP

PT NERITA SHELL

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NERITA SHELL

BT SHELL
NP NERITA

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NETTLE

BT PLANT SPECIMEN

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NETTLE FIBRE

BT FIBRE
NT RAMIE

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NEW ZEALAND FLAX

BT FIBRE

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NICKEL

RT PAKTONG
BT METAL

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NICKEL-BRASS

BT COPPER ALLOY

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NICKEL-SILVER

BT COPPER ALLOY

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NICOLO

BT ONYX

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NIELLO

RT LEAD SULPHIDE
BT PROCESSED MATERIAL

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NIGHTJAR FEATHER

BT FEATHER

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NIGUROME

BT ALLOY

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NIPA PALM LEAF

BT PALM LEAF

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NIPA PALM WOOD

BT PALM WOOD

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NITRE NP

PT SALTPETER

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NOKONOKO WOOD

BT WOOD

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NUBA WALA FIBRE

BT FIBRE

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NULLIPORE
The term refers to any of various seaweeds able to secrete lime.

RT CORAL
BT SEAWEED

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NUT
The term encompasses the husk or shell.

RT VEGETAL OIL
BT FRUIT
NT ACORN
NT ALMOND
NT BAOBAB NUT
NT BRAZIL NUT
NT BURI NUT
NT BUSHTREE NUT
NT CANARIUM NUT
NT CANDLENUT
NT CASHEW NUT
NT CHESTNUT
NT GALLIP NUT
NT GORA NUT
NT HAZEL NUT
NT KOLA NUT
NT PALM NUT
NT PEANUT
NT PISTACHIO NUT
NT PUTTY NUT
NT SEYCHELLES NUT
NT WALNUT

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NUTMEG
The term refers to the seed.

BT SEED

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NUTRIA NP
Skin or fur of the coypu. Enter COYPU SKIN when depilated, COYPU FUR when hair is present.

PT COYPU SKIN

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NYLON

BT PLASTIC

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A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z [Introduction]