Q & A 15-27
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| show | B. bluish green to green
🗑
|
||||
| show | A. iron
🗑
|
||||
| The trade term "Zambian" describes emeralds with A.lighter tone then Brazilian B. lighter tone then Colombian C.More bluish color and darker tone then "Colombian" D.less bluish color and more saturation then Colombian | show 🗑
|
||||
| show | D.pegmatites, where they intersect with schists
🗑
|
||||
| show | B. perpendicular to the crystal length
🗑
|
||||
| show | D. 90 or more
🗑
|
||||
| show | A. US and Japan
🗑
|
||||
| show | D. Zimbabwe
🗑
|
||||
| show | C. Coscuez
🗑
|
||||
| show | D. generally contain fewer fractures
🗑
|
||||
| show | A. Muzo
🗑
|
||||
| Emeralds were discovered in Zambia in A. 1890's B. 1930's C. 1950's D. 1970's | show 🗑
|
||||
| Zambian emerald crystals are typically A. well formed B. flat and tabular C. irregular in shape D. long and prismatic | show 🗑
|
||||
| show | B. in the 1950''s
🗑
|
||||
| Who produced a hydrothermal synthetic emerald layer over faceted beryl seed in the 1960? A. Linde B. Gilson C. Chatham D. Lechleitner (15) | show 🗑
|
||||
| show | C. an organic gem
🗑
|
||||
| Aragaonite is a crystallization form of A. Silica B. nacre C. conchiolin D. calcium carbonate | show 🗑
|
||||
| show | A. 1908
🗑
|
||||
| show | A. oil
🗑
|
||||
| show | D. Australia
🗑
|
||||
| show | D. mantle tissue piece and bead nucleus
🗑
|
||||
| The majority of freshwater whole cultured pearls grow from A. parasite B. bead nucleus only C. mantle-tissue piece only D. mantle-tissue piece and a bead nucleus | show 🗑
|
||||
| In the early 1990's, oysters in many important Japanese cultured pearl farming areas began to A. multiply rapidly B. produce larger pearls C. stabilize their number D. die off in massive numbers | show 🗑
|
||||
| The four major types of cultured whole pearls are akoya, South Sea, freshwater and A. rice B. Thai C. blister D. Tahitian | show 🗑
|
||||
| show | D. The Phillipines
🗑
|
||||
| The oyster used to grow Tahitian cultured pearls is A. Pinctada fucata B. Pinctada maxima C. Hyriopsis cuminingi D. Pinctada margaritifera | show 🗑
|
||||
| The nacreous layer inside a pearl-bearing mollusk's shell is called A. mantle B. the gonad C. conchiolin D. mother-of-pearl | show 🗑
|
||||
| Which country produces the most freshwater cultured pearls? A. Japan B. China C. Australia D. United States | show 🗑
|
||||
| A number of similar cultured pearl strands bundled together is called a A. hank B. mabe` C. bushel D. pearl sac | show 🗑
|
||||
| Seed pearls are A. small imitation pearls B. very small natural pearls C. cultured pearls without a bead nucleus D. accidental byproducts of the pearl culturing process (16) | show 🗑
|
||||
| show | C. round
🗑
|
||||
| The largest gem-quality natural pearl known is A. Qajar B. Dudley C. Oriental D. La Peregrina | show 🗑
|
||||
| show | B. low in saturation
🗑
|
||||
| In the trade, Tahitian cultured pearls with dark green-gry to blue-gray bodycolor and rose` to purple overtones are called A. peacock B. lavender C. pistachio D. aubergine | show 🗑
|
||||
| Which overtone color increases the value of akoya cultured pearls with white bodycolor A. Rose` B. Green C. Brown D. Yellow | show 🗑
|
||||
| show | B. pearls with higher luster
🗑
|
||||
| Pearls that show noticeable surface characteristics are A. lightly blemished B. heavily blemished C. severely blemished D. moderately blemished | show 🗑
|
||||
| show | C. warm,mild soapy water
🗑
|
||||
| show | D. acceptable
🗑
|
||||
| The matching level that describes a group of pearls that have minor variations in uniformity is A. fair B. good C. excellent D.Very good | show 🗑
|
||||
| show | A. wash, dry, and sort
🗑
|
||||
| show | A. O.5mm
🗑
|
||||
| Essence d`orient is a mixture of A. plastic and calcite B. aragonite and varnish C. fish scales and varnish D. aragonite and conchiolin | show 🗑
|
||||
| show | C. bead nucleus darkens
🗑
|
||||
| show | A. China
🗑
|
||||
| The finest-quality jadeite is called A. Imperial B. Transvaal C. spinach green D. moss-in-snow | show 🗑
|
||||
| Jadeite finest green color is caused A. iron B. vanadium C. chromium D. color center | show 🗑
|
||||
| The most valuable level of transparency in jadeite is A. opaque B. translucent C. transparent D. semitransparent | show 🗑
|
||||
| The toughness of jadeite is A. fair B. good C. excellent D. exceptional | show 🗑
|
||||
| The finest texture category of jadeite is known as A. top mine B. old mine C. new mine D. relatively old mine | show 🗑
|
||||
| show | D. bleach and impregnated
🗑
|
||||
| show | A. dyed jadeite
🗑
|
||||
| show | B. Hpakan
🗑
|
||||
| show | D. show points
🗑
|
||||
| show | A. Black
🗑
|
||||
| show | B. nephrite
🗑
|
||||
| show | B nephrite
🗑
|
||||
| show | A. sillica
🗑
|
||||
| Most opal formed A. 15 to 30 thousand years ago B. 150 to 300 thousand years ago B. 15 to 30 million years ago D. 150 to 300 million years ago | show 🗑
|
||||
| show | A. 3 to 10% water
🗑
|
||||
| What is semi-black opal's background color A. black B. brown C. grayish D. dark purple | show 🗑
|
||||
| What is the transparency of gray-base black opal? | show 🗑
|
||||
| show | A. translucent to opaque *
B.transparent to opaque
C. semitransparent to translucent
D. transparent to semitransparent
🗑
|
||||
| show | A. basalt
B. granite
C. ironstone *
D. limestone
🗑
|
||||
| Experts think fire opal's background color is caused by | show 🗑
|
||||
| show | A. flash
B. pinfire
C. peacock
D. harlequin *
🗑
|
||||
| Ply-of-color that is seen only when light travels trough an opal to the eye is called | show 🗑
|
||||
| The first black opals were discovered in | show 🗑
|
||||
| What is the first step in evaluating an opal? | show 🗑
|
||||
| show | A. sugar *
B. smoke
C. Irradiation
D. fracture filling
🗑
|
||||
| show | A. John Slocum
B. Pierre Gilson *
C. Carroll Chatham
D. Auguste Verneuil
🗑
|
||||
| Plastic imitation opal was first marketed in the late 1980s in (19) | show 🗑
|
||||
| show | A. quartzite
B. aventurine
C. cairngorm
D. chalcedony *
🗑
|
||||
| Chalcedony with curved or angular bands or layers that differ in color and transparency is known as | show 🗑
|
||||
| Which of the following has the smallest crystal size? | show 🗑
|
||||
| In the 19th century, a major source of amethyst was discovered in | show 🗑
|
||||
| show | A. chromium impurities
B. magnesium impurities
C. color centers acting on iron *
D. color center acting on titanium
🗑
|
||||
| One of ametyst's finest color is | show 🗑
|
||||
| show | A. Brasil *
B. Uruguay
C. Argentina
D. Zimbabwe
🗑
|
||||
| "Maraba" amethyst is aften | show 🗑
|
||||
| show | A. heating *
B. diffusion
C. irradiation
D. heating followed by irradiation
🗑
|
||||
| show | A. naturally colored
B. produced by heating amethyst *
C. produced by heating rock crystal
D. produced by irradiating amethyst
🗑
|
||||
| The source of natural ametrine is | show 🗑
|
||||
| Tiger's eye quartz is a | show 🗑
|
||||
| show | A. cat's eye quarts *
B. tiger's eye quartz
C. hawk's eye quartz
D. falcon's eye quartz
🗑
|
||||
| show | A. blue
B.yellow
C. blue-green
D. yellowish green *
🗑
|
||||
| The term "black onyx" is used for (20) | show 🗑
|
||||
| Which of the following gems is the most economically important | show 🗑
|
||||
| Where was tanzanite discovered ? | show 🗑
|
||||
| The name tanzanite was given to transparent blue ziosite by | show 🗑
|
||||
| Tanzanite's best color is | show 🗑
|
||||
| Almost all tanzanite is | show 🗑
|
||||
| Untreated tanzanite is typically | show 🗑
|
||||
| Tanavyte is a trade term for | show 🗑
|
||||
| In iolite, the most valuable main face-up color is | show 🗑
|
||||
| show | A. untreated
B. irradiated
C. heat-treated *
D. diffusion treated
🗑
|
||||
| Alexandrite was discovered | show 🗑
|
||||
| The color change in alexandrite is caused by | show 🗑
|
||||
| What changes during alexandrite's color change effect | show 🗑
|
||||
| What color is top quality alexandrite in daylight | show 🗑
|
||||
| The most-prized chatoyant gem in the world is | show 🗑
|
||||
| show | A. Vietnam
B. Colombia
C. Sri Lanka *
D. Combodia
🗑
|
||||
| show | A. green
B. violetish blue
C. brownish orange
D. reddish orange to orange-red *
🗑
|
||||
| The most valuable topaz varieties are | show 🗑
|
||||
| show | A. schists
B. pegmatites *
C. metamorphic rock
D. hydrothermal veins
🗑
|
||||
| The term precious topaz is used for | show 🗑
|
||||
| show | A. pink
B. colorless *
C. dark blue
D. orange-red
🗑
|
||||
| The major source of imperial topaz is | show 🗑
|
||||
| In order to attain a treated pink color, yellow to reddish brown topaz must contain | show 🗑
|
||||
| The finest aquamarine color is moderately strong | show 🗑
|
||||
| Which method is used to produce synthetic aquamatine | show 🗑
|
||||
| show | C. flame fusion
D. hydrothermal *
🗑
|
||||
| show | A. Brasil *
B. Australia
C. Mozambique
D. Unite States
🗑
|
||||
| show | A. China *
B. Kenya
C. Colombia
D. United States
🗑
|
||||
| show | A. heat *
B. diffusion
C. irradiation
D. irradiation followed by heat
🗑
|
||||
| show | A. pink *
B. green
C. yellow
D. dark blue
🗑
|
||||
| Which of the following is the rares beryl? | show 🗑
|
||||
| The only source of red beryl is in (22) | show 🗑
|
||||
| Most gem tourmalines are | show 🗑
|
||||
| show | A. marble
B. limestone
C. pegmatites *
D. metamorphic rock
🗑
|
||||
| show | A. Brazil *
B. Zambia
C. Tanzania
D. Madagascar
🗑
|
||||
| The most expensive variety of tourmaline is | show 🗑
|
||||
| Paraiba tourmaline is colored by | show 🗑
|
||||
| Which of the following trade term is used for blue tourmaline? | show 🗑
|
||||
| show | A. Brazil
B. Tanzania *
C. Sri Lanka
D. Madagascar
🗑
|
||||
| show | A. iron
B. copper
C. chromium
D. manganese
🗑
|
||||
| Many green and blue tourmalines are lighten by | show 🗑
|
||||
| show | A. dyed
B. heated *
C. irradiated
D. fracture filled
🗑
|
||||
| show | A. iron *
B. nickel
C. vanadium
D. chromium
🗑
|
||||
| show | A. Russia
B. Burma
C. Arizona *
D. Pakistan
🗑
|
||||
| The color of blue zircon is | show 🗑
|
||||
| Metamict zircons are described as | show 🗑
|
||||
| show | A. Myanmar and Pakistan *
B. Madagascar and Sri Lanka
C. Afganistan and Combodia
D. The United States and Brasil
🗑
|
||||
| show | A. Marble
B. limestone
C. pegmatite veins *
D. metamorphic rock
🗑
|
||||
| show | A. rhodolite
B. almandite
C. spessartite
D. grossularite *
🗑
|
||||
| show | A. pyrope
B. andrite
C. uvarovite
D. grossularite *
🗑
|
||||
| show | A. inclusions
B. crystal structure *
C. impurity elements
D. chemical composition
🗑
|
||||
| show | A. pyrope and andrite
B. almandite and pyrope *
C. spessartite and pyrope
D. spessartite and andradite
🗑
|
||||
| show | A. charge transfer
B. metamorphism
C. isomorphous replcement *
D. intervalance charge transfer
🗑
|
||||
| show | A. pyrope
B. tsavorite
C. andradite
D. spessartite *
🗑
|
||||
| show | A. Brasil
B. Africa
C. Russia *
D. Sri Lanka
🗑
|
||||
| show | A. iron
B. nickel
C. vanadium
🗑
|
||||
| show | A. iron
B. chromium *
C. manganese
D. color center
🗑
|
||||
| show | A. malaya
B. tsavorite
C. spessartite
D. demantoid *
🗑
|
||||
| The trade term malaya is used for a pinkish orange garnet that's a mixture of | show 🗑
|
||||
| show | A. Brazil
B. Burma
C. East Africa *
D. United States
🗑
|
||||
| show | A. red *
B. green
C. violet
D. orange
🗑
|
||||
| The most desirable, vibrant, and rare blue natural spinels are colored by (24) | show 🗑
|
||||
| show | A. Chile
B. Russia
C. Afghanistan *
D. United States
🗑
|
||||
| show | A. Afghan *
B. Chilean
C. Siberian
D. Egyptian
🗑
|
||||
| show | A. Afgan
B. Chilean *
C. Siberian
D, Egyptian
🗑
|
||||
| The finest color of turquoise is | show 🗑
|
||||
| The purest blue color of turquoise are caused by | show 🗑
|
||||
| show | A. Persian *
B. Mexican
C. Egyptian
D. American
🗑
|
||||
| show | A. quartz
B. marble
C. granite
D. limonite *
🗑
|
||||
| show | A. tan *
B. green
C. dark red
D. dark brown
🗑
|
||||
| show | A. synthetic turquoise
B. a turquoise immitation
C. reconstructed turquoise
D. polymer-impregnated turquoise *
🗑
|
||||
| A new turquoise treatment that appeared in the 1980's and has been used to treat more then 10 million carats is | show 🗑
|
||||
| show | A. Iran
B. Egypt
D. Afganistan
D. southwestern US *
🗑
|
||||
| The major source for top color turquoise today is | show 🗑
|
||||
| Reconstructed turquoise is | show 🗑
|
||||
| show | A. nickel
B. copper *
C. vanadium
D. chromium
🗑
|
||||
| The only commercial source of charoite is | show 🗑
|
||||
| show | A. lignite coal
B. fossilized mollusks
C. hardened tree resin *
D. the remains of marine animals
🗑
|
||||
| Immature amber is known as | show 🗑
|
||||
| show | A. red *
B. brown
C. brown
D. golden
🗑
|
||||
| Which of the following is a calcium carbonate | show 🗑
|
||||
| Coral's most valuable color is | show 🗑
|
||||
| show | A. red
B. blue
C. black *
D. white
🗑
|
||||
| Which treatment can create a golden color from black coral? | show 🗑
|
||||
| show | A. shell
B. coral
C. ivory *
D. crozo nuts
🗑
|
||||
| Which animal's tusks produces the most valuable ivory? | show 🗑
|
||||
| show | A. helmet shell
B. abalone shell *
C. calcareous coral
D.conchiolin coral
🗑
|
||||
| show | A. resin
B. protein *
C. calcium
D. aragonite
🗑
|
||||
| Jet is an ornamental form of | show 🗑
|
||||
| show | A. England *
B. Australia
C. South Africa
D. United States
🗑
|
||||
| show | A. sphene
B. kyanite
C. fluorite
D. moldavite *
🗑
|
||||
| show | A. Mogok
B. Ratnapura
C. California *
D. Umba River Valey
🗑
|
||||
| show | A. one
B. two *
C. three
D. four
🗑
|
||||
| show | A. aluminum, oxygen and iron
B. potassium, calcium and iron
C. aluminum, oxygen and silicon *
D. potassium, calcium and sodium
🗑
|
||||
| Moonstone is variety of | show 🗑
|
||||
| In which era did moonstone go out of style? | show 🗑
|
||||
| The adularescence of the finest moonstone is | show 🗑
|
||||
| show | A. lily pads
B. horsetails
C. centipedes *
D. discoid fractures
🗑
|
||||
| show | A. orthoclase
B. amazonite
C. microcline
D. labradorite *
🗑
|
||||
| show | A. orthoclase
B. microcline
C. moonstone
D. labradorite *
🗑
|
||||
| show | A. amazonite *
B. orthoclase
C. spectrolite
D. labradorite
🗑
|
||||
| show | A. yellow
B. light pink
C. orangy pink
D. medium green *
🗑
|
||||
| Kunzite's most common color is | show 🗑
|
||||
| Light-colored or colorless spodumene can be treated to a kunzite color by | show 🗑
|
||||
| show | A. heating
B. diffusion
C. irradiation *
D. irradiation followed by heating
🗑
|
||||
| show | A. Brasil
B. Russia *
C. Tanzania
D. Sri Lanka
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
gemgirl