international diamond council, idc
mesolite
makeables
chalk
melane
mele
meliphanite
doit
spark
(: ) fine granulation
blue peach
- German silver
german silver
menilite
twinkling
brilliance
, , shimmer
- twinkle
- twinkling
knife tool
metal
metal
platinum metal
, - metal
- emergency metal
metallic
adaptive
specific
scrap metal waste metal
, - metalwork
metal discard
spiral wrap hose
- host metal
- metal binder
smelting industry
non-ferrous metals
- meteorite
~ cosmic iron, meteoric iron
matinee
method
investment casting technique
screw tap scribe awl tap borer tap drill
() piercing saw (jig saw)
- microcline
microcline
microlite
microscopic pore
trace contaminant
bonding process
microscope ~ binocular microscope ~ petrographic (polarizing) microscope
microhardness
haircrak
holding furnace
flat bar mill bar muck iron
maldenstone
spar
, mineral
mineral spot
mineral aggregates
, - opaline
- fools gold
mirickite
( ) continuous casting machine continuous caster
polygonal
pattern
- master pattern
moldavite, pseudochrysolite, tektites
hammer scale hammer slag
handhammer
- brick hammer bricklayers hammer
- handhammer
hammer
- shaping hammer
milky quarts
momme
monazite
- coin
() - bean
palladium coins
- monogram
crystal single
monocrystal, single-crystalline
( ) rough block of stone
, - monochrome hues
montebrasite
montmorillonite
() mor(o)lop
moralla
morganite
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morganite, vorobyevite
mordenite
morinite
black quartz, morion
- morion
teeming lap
coiling machine
moss agate (mocha stone)
marble
marble onyx
marbled
( ) moir
moissanite
gentlemens pocket watch
- mans ring
chamotte powder
ingot mold charging box charging pan
murchisonite
muscovite
muffle furnace, muffler
soapstone, soaprock, pagodite
wash gold
, , soft
- softness
dressing - table set
hardness points
- boxed sets
( ) cold-hardened, hammer-hardened, cold-worked ( , )
cloth working strain hardening
key bolt spiked iron
pumping under pressure
pump feed under pressure
heating
running hot
heat up
collar mark
( ) incomplete cut
shrinkage crank
file broach file needle file needle-point
needle file
emery cloth polishing stone
() knurl(ing) tool
( ) roll forming
atch piece
, rolled gold
( ) strain hardening
( ) cold work cold- work hardening work hardening
anvil
nacre
nambulite
( / ) strung on cotton
- file rough-cut file coarse file rough
- file riffling
filling agent
free way vector
guide bearing guide plate
stress
outer rim
wrist watch (watch)
( ) inlay (damascene)
real jewels
scull formation
accretion buildup
flowstone
nathrolite
carbon pick-up carburizing
gem(m)ology
naumanite
, , ( ) base
untwinned
unfinished section
short-run casting
- defect
, - blemish
nickel silver
hard bank
non-metallic inclusions
extremely fine
extraordinarily precious
, , ( ) off colour
unfaceted
heterogeneous material
neolith
pebble pup
casting leakage
irrepeatable
hyalithe
, , opaque
neptunite
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unsplit pattern
fire resistance
( - ) ~ poor cleavage ~ imperfect cleavage
, , - inperfect
, , - imprefection
poor fusion
flaw discontinuity
nepheline
greenstone, nephrite, axe-stone, youstone
nephrite, jade
( ) bottom halves, lower girdle facets
pavilion
- base of alloy
nickeline
- nickelage
nikel plating
, - nikel
nicolo
( ) nicol ~ polarizing nicol ~ crossed nicol
novaculite
pair of scissors
metal shears
- anklet
jig - saw
nose ring
nosean (noselite)
snatch hardness number
( ) rough finish
( ) rough cut
fat extraction
degreasing agent
( ) general foreman
() parachrosis
burning calcinations
( ) break down
( ) setting punch
( )
gemmy
-cloud agate
flash welding burr
flash recess
(), , - chip
, separation
equipment facilities
hand specimen
sample
- ( ) check test piece
shrinking
- model coins
cutoff piece ends crop
wedding ring
engagement ring
- volcanic glass
obsidian
obsidian, hyalopsite
volume shrinkage
joint committee of world federation of diamond bourses, jc wfdb
, unit weight
48 oval hexagonal cross - cut
oval flat table
oval cabochon
-fire agate
, firestone
- fire opal
ziasite
fire resistance flame resistance
refractory refractory material
fire resistance refractoriness refractory property
refractory
faceted surface
faceted stones
()
faceted briolette
set a limit
arresting device
faceting
gem - cutting
- rectangular step - cut
- marquise (navette)
- princess cut
- rose cut
- heart cut
( ) - pendeloque
- trillion cut
- flanders cut
cabochon
faceted pear - shape
sphere cut
, cut diamond
( ) uniaxial
odontolite
necklace
neclet
( ) - riviere
- oikocryst
fire scale oxide scale scale
descaling mill
resistance to scaling
opalized wood (petrified wood)
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, fossil
oxidation
oxidation
souring
yellow ground
oxidant oxidizing agent
acidify acidulate
oxidize
near gem
() lembergs stain
painted stones
silicified wood, chinarump
, agatized wood
woodstone
bleb
oxide
chemical black
() octagonal flat table
() 20 octagonal step - cut
() 45 octagonal cross - cut
() octagonal cabochon
octahedron
olivine
oligoclase
tinned
onyx
black onyx
,() -onyx agate
- onyx-opal
, - opal
opalescence
( ) opalescent
opaline
opalite
( ) - opaline
, - opalescent
opera
forward slip
( ) operculum, china cats eye
saw off
box form casting box flask mold molding box molding frame
flask
- mounting
setting
( ), - chase
burred mount
flaring tool
be mounted in
set right
- assaying
assaying of minerals
optic axis
let down
orangy pink diamond
, original
orient
orletz
decor
decorative pattern
- orthoclase
orthoclase, kalifeldspath
leaded glass
, () dazzling (jewellery)
base of an alloy
alkali
point stone
cutting pliers nipper pliers pair of nippers wire nippers
cool down
twinning axis
symmetry axis (of rotation)
triad
0,01-0,15 ct melee rodotilite forcherite chlorospinel shell
bleaching process etching blanching
bleaching agent
- selected stones
e solidifying agent
, laser drill hole
- compartment for rings
foundry
enamel finish
, , - finish
parting citrine-madeira negative
air drain
annealing
burn off
cutting off
open riser
tint (tinge)
- cast from
casting founding
gravity-die casting
chill casting
( ) foundry goods
high- quality casting
hand - cast
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wash off
- wash gold
unit elongation
saw off
, , - polished
abatement letting down temper(ing)
back draw let down peel off
reflect light
( ) backward slip wastes
, () hue
, , - polished
- ophite
etching needle
chill down cool down chill mold
chilling effect cooling development off brittleness
- valuer
, , allure
adamantine
abstergent blasting agent cleaning refining
, (), brighten
pagodite
padmaragaya () padmaragaya porpezite palygorskite
- palladium
- stick of solder
papagoite
parisite
pair of pliers metal hardening () workholding device
( ) star mark
- soldering borax
- blast burner (blest lamp) for soldering
soldering bit soldering copper soldering iron
- soldering iron
- soldering gun
- soldering flux
- pegmatite
landscape agate painite
pectolite
igneous-rock froth
froth
( ) pennyweight
- the real thing
, exclusive
overheating
process stage
- advanced technology
- advanced technology
() fire mark select deal
( ) cross joint agitation mixing
chatoyant
melting down melt down
remelting
- remelt
() stop mark peritectic
peridot, olivine, chrysolite
, - periot
periclase
nacre, mother of pearl