Diamonds can be from ten to hun-dreds times harder than corundum. Diamonds themselves vary in hardness; for example, stones from Australia are harder than those found in South Africa. The four main optical charac-teristics of diamonds are trans-parency, luster, dispersion of light, and color. In its pure carbon form, diamond is completely clear and

2017年8月12日 · Diamonds? Options. Frenchman. Apr 23 2016, 06:09 AM. Post #1. Diggin' In! Group: Members Posts: 7 Joined ...

2008年1月22日 · The mine, located almost on the Colorado-Wyoming state line south of Tie Siding, Wyoming, produced numerous gem-quality diamonds, including two that, coincidentally, weighed 28.2 and 28.3 carats. The mine has been inactive since 1998, but the corporate owners continue to express hope of reopening it after improvements to crushing and recovery ...

The Colorado Prospector club welcomes everyone interested in prospecting or exploring for gem and mineral deposits within (Y)OUR NATIONAL PUBLIC LANDS. Whether you like to prospect for gold, diamonds, gems, explore new agate beds, collect mineral specimens and samples, or you're interested in exploring our great outdoors with the family.

2008年1月22日 · Master Mucker! Group: Admin Posts: 4,149 Joined: 7-October 03 From: Colorado Member No.: 3

2008年11月21日 · Most diamonds break away from the matrix and are found in a "clean" state without any trace of the matrix. This is due to the diamond being so much harder than the matrix. The diamond crystal is the only thing that survives the through the erosion process.

2011年5月3日 · Many diamonds will be lost when using a sluice box but the feed rate for processing is much higher than panning or any other field recovery method that I am aware of. That is an acceptable trade-off in my opinion since larger diamonds will …

2008年12月1日 · Hello Russ, whell when we dug in a few of these lakes , which there is no less than 20 of em here in colorado , I observed deeply wheathered kimberlite and csalcuim carbonate build up on the shorelines I did find pieces of eclogite at a few of the lakes but , from research on some of the world class kimberlite pipes in canada which are under lakes , they all have the …

2008年8月9日 · In 1975 diamonds were accidentally discovered in wyoming, to date there has been over 300 kimberlites discovered between colorado and wyoming. Atleast 200 discovered by Dan Hausel while he was chief of exploration. since 1980 many properties have seen or visited by companies , most if not all have yielded diamond.

2008年12月1日 · In 1975 diamonds were accidentally discovered in wyoming, to date there has been over 300 kimberlites discovered between colorado and wyoming. Atleast 200 discovered by Dan Hausel while he was chief of exploration. since 1980 many properties have seen or visited by companies , most if not all have yielded diamond.