Search found 15636 matches
- Sun Jun 07, 2015 1:08 am
- Forum: Gemstones
- Topic: Gemstone Treatments
- Replies: 11
- Views: 2751
Re: Gemstone Treatments
More from Ron's site, that's well worth the read: COUNTING FISSURES TO DETERMINE THE DEGREE OF ENHANCEMENT IN EMERALDS "After counting fissures on hundreds of emeralds, a close relationship (1:1) was found between surface-reaching fissures and the degree of face-up clarity enhancement..." m
- Sun Jun 07, 2015 1:07 am
- Forum: Gemstones
- Topic: Gemstone Treatments
- Replies: 11
- Views: 2751
Re: Gemstone Treatments
Emerald expert Ron Ringsrud, owner of m, says the ongoing debate in the emerald industry about whether or not filling rough and preformed emeralds is causing a major problem, is of little concern in the larger Colombian emerald picture. The practice of filling emeralds before cutting can allow some ...
- Sun Jun 07, 2015 1:06 am
- Forum: Gemstones
- Topic: Gemstone Treatments
- Replies: 11
- Views: 2751
Re: Gemstone Treatments
What happens with all the insurance policies issued on the millions of carats of Asian red andesine jewelry that the labs erroneously verified as natural and untreated, that is now verified as artificially treated beyond a shadow of a doubt, and that consumers have been paying premiums on based on t...
- Sun Jun 07, 2015 1:04 am
- Forum: Gemstones
- Topic: Gemstone Treatments
- Replies: 11
- Views: 2751
Gemstone Treatments
The old ways of observational gemology have had to give way to the more advanced method of experimental gemology , to keep up with new treatments being discovered seemingly one right after the other lately, even in stones we don't expect to be treated. This is a well thought out assessment of what's...
- Sun Jun 07, 2015 1:01 am
- Forum: Gemstones
- Topic: Oregon Sunstone
- Replies: 12
- Views: 1621
Re: Oregon Sunstone
Hi Pink, If you want some just let me know as I go down to the mines every year. They are only 6 hours away, and I have known Don for a few years now. My daughter lives just on the other side of Lakeview, so we go sunstone hunting as a family trip every year in the "free" areas, and then ...
- Sun Jun 07, 2015 12:51 am
- Forum: Gemstones
- Topic: Oregon Sunstone
- Replies: 12
- Views: 1621
Re: Oregon Sunstone
Here's a great article on the Sunstone mines in Oregon, with a submission from our own Marty in it. I thought it was great reading, and now that I've got stones from 2 of the mines, I'm on my way to collecting the whole set. Sunstone Mining in Oregon The amazing odyssey from the stark Oregon high de...
- Sun Jun 07, 2015 12:50 am
- Forum: Gemstones
- Topic: Oregon Sunstone
- Replies: 12
- Views: 1621
Re: Oregon Sunstone
This is extremely important for all interested in the andesine/labradorite debacle brought to light by the ISG last year, and confirmed in this report: Interim Report; 14-Sep-2009 The Red Feldspar Project George R. Rossman, California Institute of Technology "...Is There a Mine in Tibet That Pr...
- Sun Jun 07, 2015 12:49 am
- Forum: Gemstones
- Topic: Oregon Sunstone
- Replies: 12
- Views: 1621
Re: Oregon Sunstone
jenador4 wrote:Hi PinkDiamond
Just watched the video you posted, wow, I want to go to Oregon and mine the Oregon Sunstone!!!! It took me right back to our mining days in Central Queensland mining sapphires. It looked like the mining techniques were pretty much the same. Thank you for sharing.
- Sun Jun 07, 2015 12:48 am
- Forum: Gemstones
- Topic: Oregon Sunstone
- Replies: 12
- Views: 1621
Re: Oregon Sunstone
This is a fantastic new website the ISG has just launched, where you can find all the information you could ever want on Oregon Sunstone. Don't miss the information on all the fraudulent mines that some claim exist, because they're all BOGUS, and you can get into a lot of trouble claiming stones fro...
- Sun Jun 07, 2015 12:47 am
- Forum: Gemstones
- Topic: Oregon Sunstone
- Replies: 12
- Views: 1621
Re: Oregon Sunstone
I am SO excited because even though I didn't get to go on the trip to the sunstone mines in Oregon with the ISG in June, I got a gift from them in the mail yesterday, so now I can show you what the Oregon rough looks like up close. Here's a shot of the 15.65ct rough from the Double Eagle mine in Plu...