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Wednesday, February 02, 2011

Jewelers Loupe

What is a Loupe?

A Jeweler’s loupe is a magnifying glass used by jewelers to assess the quality of jewelry, watch gemstones and mechanisms. Loupes help find the impurities, imperfections and flaws of jewelry very easily. This needs to be done In order to establish the real value of gold, diamond or other expensive items and to determine that an item is original or fake.


Where did Loupe come from?



There are two different stories about the word “Loupe” that tell us that the word loupe is not certain.

Some people  believe that its actually a French word that originally means “flawed stone”. Others believe that Loupe is actually a Dutch word that is Lupen which actually means “to peer”. These stories make us clear some facts about history about the word Loupe but the most important thing is that no matter what meaning this word has the basic aim is to check the purity of jewelry.


How to use a Jeweller's Loupe?


1. You want to purchase a jeweler's loupe that has about a 20mm lenses (may vary between 18mm to 25mm) You also want one that has been corrected for aplanatic and achromatic aberrations to avoid seeing fuzzy or out of focus images.

2. Establish your seeing eye. Hold one finger up and place it about 2 feet before you. Notice what is behind the finger when you look beyond the finger with both eyes. Close one eye at a time while looking at your finger. The eye that places your finger in the same place in relation to the background is your seeing eye.

3. Find a place with as much light as possible. Sunlight is more preferable.

4. Place a clean towel on the surface you plan to use. If you are holding a gem such as a diamond and it drops, you want to give it a soft landing spot.

5. Open the loupe until the loupe is straight. This position is the most comfortable one for loupe use.

6. Pick up the loupe with the hand on the same side as your seeing eye.

7. Grasp the loupe between your thumb and middle finger. Place your index finger through the open slot at the bottom of the loupe if it fits there.

8. Place the loupe in front of your eye. Hold it about 1 or 2 inches away from your eye. If the object is too far away from your eye, the item will appear upside down so move the loupe closer to your eye.

9. Steady the loupe in your hand by resting one of your fingers on your cheek.

10. Position the item holding the object so you can steady it by placing it against the other hand.
Posted by Mike Gupton at 2:22 PM