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#1876

Sandbagger
Member
Joined: 09 January 2019
Posts: 407
Member
23 August 2019 03:03 pm

Heatho wrote:

Interesting little sapphire there Sandbagger.

You reckon it's a sapphire? Found in Murrumbidgee river.

Baz.

#1877

Heatho
Moderator
From: Sydney, NSW
Joined: 29 April 2013
Posts: 13,253
Moderator
23 August 2019 05:38 pm

Sandbagger wrote:
Heatho wrote:

Interesting little sapphire there Sandbagger.

You reckon it's a sapphire? Found in Murrumbidgee river.

Baz.

Yeah, certainly looks like one to me. It could be blue spinel but most likely a sapphire though.

I found this sapphire deposit on minview, which drains into the Murrumbidgee.

1566542233_sapphire.jpg


Minelab GPX 5000, SDC2300, CTX3030, Equinox 800, patience, lot's of patience.

#1878

NStone
Member
Joined: 25 April 2019
Posts: 9
Member
28 August 2019 08:34 am

A stunning Zircon I found from Rubyvale.

1566941618_img_0023.jpg

10 users like this post: Dave79, Sodabowski, Wally69, Heatho, Martyz, LoneWolf, Splinter, pinfire opals, kurra, ktmman

#1879

Sodabowski
Member
From: Southern France
Joined: 24 March 2014
Posts: 188
Member
28 August 2019 08:47 am

This one could do with some facets smile


Thomas

#1880

Heatho
Moderator
From: Sydney, NSW
Joined: 29 April 2013
Posts: 13,253
Moderator
28 August 2019 09:36 am

NStone wrote:

A stunning Zircon I found from Rubyvale.

https://www.prospectingaustralia.com.au … g_0023.jpg

Those reddish zircons really do cut into great looking gems, nice find.


Minelab GPX 5000, SDC2300, CTX3030, Equinox 800, patience, lot's of patience.

#1881

Splinter
Member
From: Logan, QLD
Joined: 01 May 2017
Posts: 20
Member
22 October 2019 09:16 pm

Long weekend in the creek at Billabong Blue, taking advantage of the dry to access some wash that is usually well under the water table. Approx 11 ct. Was getting crumbs for two days, then out of nowhere it came. Was a happy camper.1571739300_20191008_193656.jpg

18 users like this post: 7.62marksman, LoneWolf, MegsyB007, Sodabowski, Rockhound, Martyz, pinfire opals, Dihusky, kurra, Gunna, Heatho, Jeff, goldinbrisbane, Wally69, Chiron52, LuckyPhil, ktmman, Gemzilla

#1882

Rockhunter62
Member
From: Roaming, WA
Joined: 03 May 2016
Posts: 2,297
Member
22 October 2019 10:13 pm

Time for a party Splinter. thumbsup

Cheers

Doug


Forest Gump once said "life is like a detector going beep, you don't know what it is till you dig it up"

#1883

Sodabowski
Member
From: Southern France
Joined: 24 March 2014
Posts: 188
Member
22 October 2019 11:02 pm

Time for faceting!


Thomas

#1884

Pat Hogen
Member
Joined: 02 January 2018
Posts: 202
Member
23 October 2019 07:33 am

I would like to see down the teal axis and would probably choose this design, it comes out nice and clean and bright - http://www.facetdiagrams.org/database/f … 04133.html


Absinthe makes the heart grow fonder

1 user likes this post: Martyz

#1885

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 799
Member
23 October 2019 04:30 pm

Looks a lovely piece Splinter, depending on the overall shape of the stone, Pat's recommendation would produce a beautiful stone once the pavilion facets are adjusted for Sapphire, should end up with a 3 - 4ct stone once cut.

#1886

Splinter
Member
From: Logan, QLD
Joined: 01 May 2017
Posts: 20
Member
23 October 2019 09:36 pm

Yes definitely time for a "party" hahaha then the faceting. Unfortunately I think the blue when you look through the C axis is a little on the dark side and takes a lot of light out of the yellow, so may need to be trimmed down a bit. Looking to get it professionally cut, as I have not started cutting yet (have been looking around for a faceting machine though). Thinking of sending it to Doug Menadue as he seems reputable and am willing to pay for a great cut on my first good find and peace of mind that I will not get a piece of glass given back to me. I very much like the cut you posted Pat and if I got a 3 ct cut stone out of it I would be very happy, thanks for the estimate Dihusky! If I do end up getting it cut, I will post the result! Thanks for the advice and happy digging/faceting to all.

1 user likes this post: LoneWolf

#1887

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 799
Member
24 October 2019 06:22 pm

Interpreting a bicolour sapphire takes a good understanding of light paths in the stone once cut, what you see on one axis is only part of the story, the next part is the cross table and how it absorbs/transmits light. To fully understand it is better to discuss the stone with the person who is going to cut it so you see how the cutter is interpreting the stone.

If blue on the C axis and yellow on the cross table, light traveling from blue through the yellow cross table is likely to come out green, so blue on the crown is not necessarily the best orientation whereas blue at the base of the pavilion will produce a totally different effect. Sapphire is also always cut between 7 & 15 degrees off axis, so that can change things again.

If you don't want to use a cutter on this forum, and there are some top notch cutters here, probably one of the best cutters for Sapphire would be John Broadfoot who is in Bundaberg. He is an acknowledged expert on Sapphire, extensively published and could probably be referred to a chief instructor for the AFG. He put together the recent AFG classes at the annual Casino event last month where I was studying gem repair and re-cutting.

If you want his contact details PM me.

1 user likes this post: LoneWolf

#1888

Wentywildman
Newbie
Joined: 19 February 2018
Posts: 7
Newbie
03 November 2019 07:31 am

1572726298_dde746b8-3864-4ab3-a13d-e143ea650960.jpg
1572726300_0eeb35d4-c02f-444f-90ad-5ea18dc75db1.jpeg

Been a member for a while but only posted once or twice a while back. Thought I’d show some of my recent mineral finds. Some platy calcite that I pull out of an old breccia quarry in eastern creek nsw. I’ve uploaded 2 photos here will put some more up in the next 2 post any comments greatly appreciated. I thought they were quartz when I grabbed them and took them home, until I did a hardness test on them. One has some very small, what I assume are pyrite suns on it

2 users like this post: Blocker, Heatho

#1889

Wentywildman
Newbie
Joined: 19 February 2018
Posts: 7
Newbie
03 November 2019 07:33 am

1572726732_9d53702c-fcf6-4f68-b50c-4f879d76588b.jpg
1572726733_9f32572c-72d9-4cf3-8006-5f7b6623b96d.jpeg

3 users like this post: Blocker, Mungoman, Heatho

#1890

Wentywildman
Newbie
Joined: 19 February 2018
Posts: 7
Newbie
03 November 2019 07:43 am

1572727344_a162ab18-150c-48a9-b74f-779b18ed1a05.jpg1572727362_3f6dbca0-7c6c-454f-80c3-3f40a51c46fd.jpg1572727389_c7d30207-6d33-4acd-964a-89450d0c0e1a.jpg

8 users like this post: Blocker, Pat Hogen, Dave79, ktmman, MegsyB007, Heatho, Gunna, Chiron52

#1891

Gilly47
Member
From: Currently on Tour, QLD
Joined: 18 January 2015
Posts: 692
Member
04 November 2019 12:25 am

is that the old BMG???

ray


1 wife 1 dog and a sieve. NAPFA & QSMA member,

#1892

Wentywildman
Newbie
Joined: 19 February 2018
Posts: 7
Newbie
04 November 2019 10:46 am

It’s pretty close to there, it’s the old Hanson Wallgrove quarry behind Where Wonderland used to be

#1893

Gilly47
Member
From: Currently on Tour, QLD
Joined: 18 January 2015
Posts: 692
Member
04 November 2019 10:34 pm

aahhaa ,, never ventured that far

ray


1 wife 1 dog and a sieve. NAPFA & QSMA member,


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