GemData Welcomes You To

July 1996 Gem Quiz

This is a multiple choice quiz to test your knowledge of Colored Gemstones, Diamonds and the Gemstone Trade. Choose the best answer for each question from the available answers.

This quiz is to sharpen your skills and expertise of the Gemstone Industry. Sorry, you will not receive any prizes for completing this quiz, just the joy of learning. Have fun.

  1. How many carats are in one gram?
      4
      5
      6
      10

  2. What is the average recovery rate when cutting a colored gemstone from rough?
      10%
      15%
      20%
      25%

  3. The Moh's Scale is used for what?
      Refractive Index
      Hardness
      Specific Gravity
      Dispersion

  4. What is the Birthstone for January?
      Blue Topaz
      Tourmaline
      Zircon
      Garnet

  5. Sterling Silver is what fineness or purity?
      .999
      .950
      .925
      .800

  6. If all of the gemstones listed below are of equal size, then which one is heavier?
      Diamond
      Hematite
      Beryl
      Opal

  7. Which gemstone enhancement is commonly done to emeralds?
      Fracture Filling
      Heating
      Oiling
      Diffusion

  8. How many Pennyweights are in a Troy Ounce?
      12
      15
      20
      16

  9. Momme is a measurement of weight used for what?
      Diamonds
      Colored Gemstones
      Pearls
      Gold

  10. Chrysolite is commonly known as what gemstone?
      Chrysoberyl
      Peridot
      Chrysocolla
      Tourmaline

  11. What is the Gemstone Enhancement Code normally used for Aquamarine?
      E
      N
      H
      A

  12. The mineral Steatite is know as?
      Lapis
      Sodalite
      Soapstone
      Jade

  13. Which not so common gemstone has two different hardness?
      Zircon
      Tourmaline
      Beryl
      Kyanite

  14. Which gemstone exhibits the most absorption lines in its spectrum?
      Zircon
      Aquamarine
      Tourmaline
      Diamond

  15. Which gemstone has perfect cleavage?
      Diamond
      Topaz
      Ruby
      Aquamarine

  16. Which natural gemstone has the greatest amount of dispersion?
      Fluorite
      Sphalerite
      Synthetic Rutile
      Diamond

  17. What new gemstone was discovered in the last 4 to 5 years in Tanzania?
      Sapphire
      Chrome Tanzanite
      Maw-sit-sit
      Tsavorite

  18. What is the name of the famous diamond mine in Australia?
      Argyle
      Kimberly
      Jagersfontein
      Bultfontein

  19. Diamonds are normally found in what?
      Mountains
      Beaches
      Pipes
      Valleys

  20. The value of a gemstone is based on its?
      Brightness
      Clarity
      Color
      Cut

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

Copyright 1996 GemData Corp., All rights reserved. Last Updated: Tuesday, July 2, 1996