June 1996 Gem Quiz

1. Who is currently responsible for marketing and promotion of diamonds in the United States?
   Ruby Tuesday
   Lyn Diamond
   Sharon Stone
   Emerald Cluster

2. What Gem Type does Aquamarine and Emerald belong to?
   Garnet
   Feldspar
   Beryl
   Zoisite

3. What is the hardness on the Moh's Scale of Topaz?
   6.5
   7
   7.5
   8

4. What is the Refractive Index of Ametrine?
   1.54
   1.62
   1.76
   2.41

5. What gemstone is banded in two or more tones of green and does not hold up well to daily wear?
   Emerald
   Dioptase
   Malachite
   Chrome Tanzanite

6. What gemstone has a greater range of colors?
   Ruby
   Tourmaline
   Beryl
   Sapphire

7. Which country is the most Ametrine mined in?
   Brazil
   China
   Bolivia
   United States

8. How many facets does an American Standard Round Brilliant have?
   43
   76
   58
   62

9. Which city in the United States is the largest annual gem and mineral show held?
   Los Angeles
   Chicago
   New York
   Tucson

10. If a gemstones weighs 18.56 grams, how many carats is this?
    74.24 Cts.
    92.80 Cts.
    185.60 Cts.
    111.36 Cts.

11. What is the Gemstone Enhancement Code normally for Corundum?
    E
    N
    U
    A

12. Which gemstone is blue in color and comes only from California?
    Lapis
    Sodalite
    Benitoite
    Aquamarine

13. Which state were diamonds mined in?
    Arkansas
    Alaska
    North Carolina
    Maine

14. Which gemstone is the birthstone for October?
    Ruby
    Aquamarine
    Tourmaline
    Diamond

15. Which weighs more, a 1 carat Diamond or a 1 carat Cubic Zirconia?
    Cubic Zirconia
    Diamond
    None of the above

16. The term Fire Opal is used for Opal coming from which country?
    Australia
    Mexico
    Brazil
    United States

17. What country currently does the fluorescent blue color Apatite come from?
    Brazil
    Madagascar
    Sri Lanka
    Mexico

18. What is the refractive index of Zircon?
    1.74
    1.98
    1.88
    1.81

19. Which 1 carat Diamond has the greater dollar value?
    VVS2 G
    VVS2 H
    FL F
    SI1 E

20. The Black Prince Ruby, in the Crown Jewels of England is actually what gemstone?
    Ruby
    Rhodolite
    Pyrope
    Spinel

GemData will continue to have a future Gem Quiz each month. Would you like to see your questions used for a future Gem Quiz? GemData will be happy to post the persons name who submitted the question if so desired. Please submit your questions on any subject to do with the Gem, Diamond or Jewelry Industry with the answers to Lance Kanaby at lkanaby@buffnet.net