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Top halves upper girdle facets




topaz (- ) (-) , asteriated ~ bohemian ~ , citrinebrazilian ~ 1 2 citrine false ~ gold ~ , hyacinth ~ , - madeyra ~

topazolite -

topped with

torch ,

touchstone

toughness

tourmaline -

tourmaline ( , ), , - black ~ , blue ~ , -

transfer table

transformation stress

transformation temperature

transparency

trapezium cross - cut 45

trapezium step cut 20

treasure

treasury

treat under vacuum ( )

tremolite -

triad ,

trial of the pyx ,

triangle cut

tridymite ,

trillion cut

trillion cut

trim ( )

trimming

trinket , ,

triphane -

triphylite ( ) -,

troy (measure)

troy pound

troy weight

tsavorite

tugtupite ( ) -, -

tumble -

turquoise

turquoise ( ) , -

tuxtlite (-),

twin ,

twin crystal contact ~ penetration ~

twin surface -

twinkle ,

twinkling

twinkling -

twinned ,

twinning ,

twinning axis

twinning band

twisting ( )

two - coloured

two - high reversing ~ mill -

two - high reversing blooming mill -

U

ulexite

ulexite ( ) , ,

ultimate strength in alloy

ultramarine

ultrasonic wave

unbend ( )

unbender unit

uncoiling unit

uncrystalline ,

underfill -

underfilling ()

unevenness ()

unfaceted

unfinished

ungrease

uniaxial ( )

unique pieces

unit elongation

unit weight ,

unit - cast

unmounted

unoil

unscrambler - -

unshrinkability

unshrinkable

unsolder ( )

unsplit pattern

untwinned

unwinder

upper die

upper girdle facets ( )

upset

upsetting

uruguayan amethyst clusters -

ussingite ( ) - - -

uvarovite -

uvarovite ( ), ,

uvite - , -

V

v & lencianite ()

vacuum

vacuum casting

vacuum chamber -

vacuum degassing

vacuum furnace

vacuum molding - -

vacuum treatment

valency

valuable -

valuables -

value -

valuer -

variscite ( ), -

veils ( )

vein of gold -

veining

veneer - -

Venetian pearl -

vent

vent wire ( )

venus hairstone , -

vera cruz

verdelite (- )

verdigris ( )

verdite

vermeil ()

vermeil - , ,

vermilite ,

vertical - plunger cold chamber die casting machine -

vertine -

vesuvianite -

vesuvianite ( , , ) , , , , , ,

vibrating table

vibration

vibration compaction

vibrator

violane -

virgin gold -

viridine -

viscosity

viscous - flow

vise -

vishnevite ,

vitreous

vitreous silica

vivianite ( ) , ( , , )

vlasovite ( )

vogesite (- , )

void

voidage

volcanic glass -

volkonskoite , ( )

volume ; fractional void ~ (); pore ~ ; void ~

volume shrinkage

vorobyevite

W

wad

warming

warping

wash gold -

waste

waste ~

waster

wastes

watch -

watch case -

watch chain -

watch key -

watch maker -

watch makers -

watch of local make -

watchface -

watchglass -

watchmaking -

watchstrap

water jacket ()

wavellite ( ) -븭 ,

waviness ( )

wax

waxy ( )

weak sand

wear

wear ~ property

wear ~ tear

wear resistance

web ()

wedding ring -

wedding ring box -

wedding ring sizing machine

wedging ( )

weigher

weighing

weight

weight percentage

welt

Wernerite scapolite

westanite

wetting

whalebone ,

whet ()

whewellite () ( )

whimsical jewelry

whirling runner

white gold -

willemite ( ), , , , -, -

wiluite ()

wing ()

wiper ( )

wire

wire (gold silver) ( )

wire and sheet roller

wiry ( )

withamite

witherite ( )

wkrdite ( , )

wolframite ( )

wollastonite ( )

woodstone

work of sterling merit -

workability ()

workbench

working -

workmanship -

workshop -

wrap ( )

wrapper ( - )

wrapping ( )

wrinkle

wrist watch -

wulfenite ( )

wulff net

X

xalostocite

xenotime ( ) -,

xonotlite (- ) , -, -

x - ray diamond

xylopal

Y

yakutite ,

yellow

yellow ground

yield point ,

yield stress ,

yielding of crystals

youstone

yuksporite ( - ) -

Z

zafirina

zafiro 1 2 -

zeasite ,

zektzerite ( , ), , , ,

zeolites , , - , , ,

zeuxite

zeylanite





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