Texas State Gem and Gemstone Cut

The largest gem quality topaz found in North America came from Mason County Texas. It weighs just shy of three pounds. For much of its life it has been in the Smithsonian Institution, but recently it has returned to Mason County for display in our Museum on the Square.

Texas Souvenir Blue Topaz Lone Star Cut
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This is the citation from the Texas House Designating the Offical State Gemstone Cut of Texas as the Lone Star Cut STATE CUT

HOUSE CONCURRENT RESOLUTION WHEREAS, The flag of Texas, the public symbol for all to see, has a lone star as its prominent feature; and WHEREAS, This is reflected in the State slogan “Texas – The Lone Star State” ; and WHEREAS, A special gemstone cut known as the Lone Star Cut has been designed by two native Texans; and WHEREAS, Any gems one may be cut in this manner, including the State Gem, the Blue Topaz; and WHEREAS, The special characteristic of the Lone Star Cut is the appearance to the viewer when looking directly into the stone, in that it reflects the five-pointed star; now, therefore, be it RESOLVED by the House of Representatives of the State of Texas, the Senate concurring. That the Lone Star Cut be and is hereby designated as the official State Gemstone Cut of Texas; and, now, be it further RESOLVED,

That the specifications for faceting the Lone Star Cut are for an 80 index gear and shall be as follows:


1. Cut 10 facets at 45°. Index 4-12-20-28-36-44-52-60-68-76.

2. Cut 5 facets at 54°, until the star is a measured 65 percent of the diameter of the stone. Index 80-16-32-48-64.

3. Cut 10 facets at 60.7°. Index 2-14-18-30-34-46-50-62-66-78. These are to meet the points of the star exactly.

4. Cut 5 facets at 65°. Index 8-24-40-56-72. These should also meet the points of the star exactly.

5. Prepolish in the same order, then polish from the culet to the girdle.


1. Cut 10 facets at 41.5°. Index 2-14-18-30-34-46-50-62-66-78. These should be cut until the girdle is of the proper thickness.

2. Cut 5 facets at 52.1°. Index 8-24-40-56-72. Cut these until they match the corresponding facets of the pavilion in width at the girdle. This will insure the proper size for the table.

3. Cut 5 facets at 30°. Index 80-16-32-48-64.

4. Cut the table at 0° until the 30° facets meet at a point.

5. Prepolish in the same order, then polish in reverse order. If desired, the table may be cut and polished last; it depends on your machine.

The girdle may be polished or not, as you wish. House Concurrent Resolution No. 97, 65th Legislature, Regular Session (1977) Adopted by the House on March 19, 1969; adopted by the Senate on March 24, 1969. Filed and Approved March 26, 1969