GIA COLORED STONES CORE MAIN EXAMS ALL
QUESTIONS AND ANSWERS SURE A+
✔✔The name padparadscha means - ✔✔lotus flower.
✔✔What's a common trade name for intensely saturated, light to medium pinkish
orange to orange to orange-pink sapphires ? - ✔✔Padparadscha
✔✔Color-change sapphires typically changes from blue to violet to - ✔✔reddish purple.
✔✔Sapphire's color changes caused by - ✔✔vanadium.
✔✔The most common number of rays in a star corundum is - ✔✔6.
✔✔Asterism in star sapphire is caused by - ✔✔hematite.
✔✔The best-quality star corundum is - ✔✔semi-transparent.
✔✔Which is the most prized bodycolor in star corundum ? - ✔✔Red
✔✔What causes the pink color of corundum ? - ✔✔Chromium
, ✔✔Which fancy sapphire hue regularly commands top prices ? - ✔✔Pink
✔✔Green sapphire is - ✔✔readily available.
✔✔Which color of star sapphire is usually cur shallow due to parting ? - ✔✔Black
✔✔A major source of black star sapphire is - ✔✔Australia.
✔✔Fancy sapphires from Montana tend to be - ✔✔light in tone.
✔✔The first flame-fusion star rubies were produced in the - ✔✔1940s.
✔✔The most desirable emerald hues are - ✔✔bluish green to green.
✔✔Which element increases the amount of blue in an emerald's color ? - ✔✔Iron
✔✔The trade term "Zambian" describes emeralds with - ✔✔more bluish color and more
darker tone than "Colombian."
✔✔Brazilian emeralds are mined from - ✔✔pegmatites, where they intersect with
schists.
✔✔To emphasize the most desirable color, cutters orient a fashioned emerald with its
table - ✔✔parallel to the crystal length.
✔✔What's the estimated percentage of fashioned emeralds that contain filled fractures
? - ✔✔90 or more
✔✔Which two countries account for about 75 percent of emerald purchases worldwide
? - ✔✔US and Japan
✔✔The four major emerald sources are Columbia, Zambia, Brazil and - ✔✔Zimbabwe.
✔✔One of Colombia's traditional emerald mines is called - ✔✔Coscuez.
✔✔Compared to emeralds from other sources, emeralds from African mines -
✔✔generally contain fewer fractures.
✔✔Trapiche emeralds were first discovered in - ✔✔Muzo.
✔✔Emeralds were discovered in Zambia in the - ✔✔1930s.
✔✔Zambian emerald crystals are typically - ✔✔irregular in shape.
QUESTIONS AND ANSWERS SURE A+
✔✔The name padparadscha means - ✔✔lotus flower.
✔✔What's a common trade name for intensely saturated, light to medium pinkish
orange to orange to orange-pink sapphires ? - ✔✔Padparadscha
✔✔Color-change sapphires typically changes from blue to violet to - ✔✔reddish purple.
✔✔Sapphire's color changes caused by - ✔✔vanadium.
✔✔The most common number of rays in a star corundum is - ✔✔6.
✔✔Asterism in star sapphire is caused by - ✔✔hematite.
✔✔The best-quality star corundum is - ✔✔semi-transparent.
✔✔Which is the most prized bodycolor in star corundum ? - ✔✔Red
✔✔What causes the pink color of corundum ? - ✔✔Chromium
, ✔✔Which fancy sapphire hue regularly commands top prices ? - ✔✔Pink
✔✔Green sapphire is - ✔✔readily available.
✔✔Which color of star sapphire is usually cur shallow due to parting ? - ✔✔Black
✔✔A major source of black star sapphire is - ✔✔Australia.
✔✔Fancy sapphires from Montana tend to be - ✔✔light in tone.
✔✔The first flame-fusion star rubies were produced in the - ✔✔1940s.
✔✔The most desirable emerald hues are - ✔✔bluish green to green.
✔✔Which element increases the amount of blue in an emerald's color ? - ✔✔Iron
✔✔The trade term "Zambian" describes emeralds with - ✔✔more bluish color and more
darker tone than "Colombian."
✔✔Brazilian emeralds are mined from - ✔✔pegmatites, where they intersect with
schists.
✔✔To emphasize the most desirable color, cutters orient a fashioned emerald with its
table - ✔✔parallel to the crystal length.
✔✔What's the estimated percentage of fashioned emeralds that contain filled fractures
? - ✔✔90 or more
✔✔Which two countries account for about 75 percent of emerald purchases worldwide
? - ✔✔US and Japan
✔✔The four major emerald sources are Columbia, Zambia, Brazil and - ✔✔Zimbabwe.
✔✔One of Colombia's traditional emerald mines is called - ✔✔Coscuez.
✔✔Compared to emeralds from other sources, emeralds from African mines -
✔✔generally contain fewer fractures.
✔✔Trapiche emeralds were first discovered in - ✔✔Muzo.
✔✔Emeralds were discovered in Zambia in the - ✔✔1930s.
✔✔Zambian emerald crystals are typically - ✔✔irregular in shape.
