Lovelady Diamond


Jewelry and Gold Buyers
~ Since 1980 ~
Phone: (800) 854-0014
Fax: (408) 358-5339
Email: Info@gemgate.com
Map and Directions

Sell your diamonds, jewelry, gold, coins, sterling and platinum safely and competitively.
Lovelady Diamond

JEWELRY & GOLD BUYERS

Established and Original Owner Since 1980

Serving San Jose, Sunnyvale, Cupertino, Santa Clara, Santa Cruz, and Los Gatos areas as well as the USA via our free shipping kits from our Los Gatos office.

Measuring Table Size


Table Guage

The table gauge measures in increments of 1/10ths of a millimeter. Be careful not to touch the ruler area.

The green line represents the widest table measurement of the possible four and the red line is the diameter of the diamond. The green measurement is divided by the red to find the table percentage.

The A.D. Leveridge Gauge

The A.D. Leveridge Gauge is a valuable tool in anyone's diamond business. Also available in digital-LCD readout.

Measuring a stone.

Use the outside jaws for measuring mounted stones.

The most accurate way to measure a table is with a table gauge. This is a small, transparent, plastic ruler that measures in increments of tenths of a millimeter (0.1 mm). A scope or a loupe is required to measure the table in four directions with your table gauge. Measure the distance across the table starting between two stars (where the points join) to exact opposite location. Repeat this three more times for the other possible directions across the table, recording each measurement. Try to record these measurements in hundredths of a millimeter for accuracy. For example, if the table measures almost half way between tenths of a millimeter record this as 3.54 mm. Half way between the tenths would be recorded as 3.55 and so on. The largest measurement of the four will be used for the final size.

At first it will probably be difficult to measure a diamond's table while trying to keep the gauge absolutely steady and the loupe in perfect focus. When using a loupe, place the pavilion into a slotted support of some type, such as a piece of cardboard fashioned to keep the diamond upright. Steady your hand by resting it on a surface while taking your measurements.

The second part of the table percentage value is the girdle diameter. This is much easier to measure with an A.D. Leveridge Gauge. Place the table side down on the gauge platform between the flat jaws, then rotate the diamond, making a note of the smallest and largest measurement values. If the diamond is mounted, use the outside needle-jaws to fit in between prongs. Add these two figures together and divide by two getting to get the average girdle diameter. Finally, to find the table percentage, divide the largest table measurement by the average girdle diameter.

For example:

Girdle Diameters: largest: 6.32 smallest: 6.24, [6.32 + 6.24 = 12.56] x .5 = 6.28 (average girdle diameter)

Table Diameters, 4 measurements; 3.43, 3.46, 3.45, 3.44;

Largest Table Diameter, 3.46. Divide by average girdle diameter (6.28) = .55095

Round this figure to the closest two-digit number and express in %: 55%.

57% Table

57% Table

59% Table

59% Table

68% Table

68% Table

49% Table

49% Table

58% Table

58% Table

62% Table

62% Table

Table Sizes

Make a visual note of the gradually increasing table sizes. Studying these figures and actual diamond tables will allow you to estimate without the use of tools.

Certification | Diamond Specs | Contact Information

   Selling diamond jewelry to us has always been a safe and seamless process as we have been up to date on market conditions for over 34 years (since 1980). The owner is an author of a self-instructional course and has written many published trade magazine articles in the years past.


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Certification | Diamond Specs | Contact Information

   The owner, Glenn Lovelady, is a diamond cutter and knows diamonds from the rough to the polished. The information on this website alone would qualify as a diamond encyclopedia so be aware that we know this product like very few people do. Be confident that you are dealing with professionals that have many decades of experience.


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Gold Information | Contact Information

   Even though the prices have been very volatile in the metals markets we stay up to date on trends and promise to pay you an extremely competitive price.


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Step 1 | Step 2 | Step 3 | Contact Information

   Timepieces can be a trendy market but we have the knowledge and experience to bid quotes that satisfy our sellers and leave a small profit to run our business. We are not watch snobs so we have expanded broadly outside of the typical "we only buy Patek, Rolex and Cartier" mentality.


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Description | Contact Information

   We are consistently expanding our knowledge and buying power into areas that have been both interesting and very marketable. A few years ago we would have never guessed we would be buying high-end clutch bags and figurines. Feel free to contact us with as much information as possible regarding your valuable small collectible.


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