Do you have interest in this stuff?

Berg crystal:

there is a bluish-green variant of the emerald too:

The Empress of Uruguay : The largest Amethyst Geode in the world that stands

at 11 feet and weights 2.5 tons. It has

thousands of deep purple crystals that

formed in the geode 130 million years

ago. Crystal Caves Museum, Queensland,

Australia.

Star sapphires are quite interesting, for the way they make what would otherwise be a flaw, a highlight. The star in a star sapphire is simply an inclusion (usually titanium), which follows the underlying crystal structure (hence scattering out in six directions when looked at above). There is not really such a thing as a twelve pointed star sapphire, and what you’re actually seeing is two infusions that as the sapphire has continued to crystallise have been naturally superimposed. It’s not that uncommon for this to occur, but obviously far less common for the “needles” of the two inclusions to be so perfectly spaced. In fact, a lot of sapphires you see are technically star sapphires, but you simoly don’t see the star, because of the faceting. Just as you can hide many inclusions in diamonds by careful faceting, so you can hide inclusions in sapphires. The only way to show the inclusion is to cut the stone cabochon, rather than facet it. And obviously you only cabochon a stone where the inclusion will be aesthetically pleasing (and not all stars in sapphires are).

Well, obviously you would know what a star sapphire is. Or, at least, I certainly assumed you would. But there are probably many out there who know of them, but don’t realise what they are,

I used to work in a jewellers, and customers would come in and ask about star sapphires, believing them to be a completely different type of gemstone than a sapphire. Just as there were customers who don’t realise that there are different colours of sapphire. It’s weird, because they would know about different colours of diamond, but be surprised if we had a yellow or pink sapphire on display.

[EDIT] As you said yourself, learning never ends. It may have been the first time you had seen a twelve pointed star sapphire, and so it might likely be the first time anyone reading your post had, too. I was simply expressing my interest, and if someone learnt something, then that was cool. But it was hardly my intent.

You are clearly knowledgable about gemstones. Even if you hadn’t outrightly stated that,mthe creation of this thread, and your posts within it, show this. Because I can see you are knowledgeable about gemstones, I assumed you know what a star sapphire is. Because I assume you know what a star sapphire is, I also assume you know that a 12 pointed star sapphire is actually two 6 pointed stars. I was not attempting to teach or inform you of anything, as that would be patronising and condescending. What I was trying to do was show that I had an interest, too, and also for other readers of this thread (who are not necessarily as likely to be as knowledgable as you), to perhaps inform them, or at least simply elaborate on your own post. Let’s not drag this interesting thread off topic, simply because you have an issue with me.

I look forward to seeing the next stone you post. (I had not noticed this thread existed, until today.)

Every example of goodletite looks quite different, making any jewellery that uses it very different from any other. The hues can very greatly, depending on which stone is more dominant in the fuchsite, and obviously there can be differences in saturation and tone, too. You can find goodletite jewellery where the stone is more pinkish, blueish, or greenish, for example.

https://www.mindat.org/min-7549.html" rel="nofollow - https://www.mindat.org/min-7549.html

Jane Relf & Stairway - Aquamarine

Joan Baez - Diamonds and Rust

Shirley Bassey - Diamonds Are Forever

The Beatles - Lucy in the Sky with Diamonds

David Bowie - Diamond Dogs

Eric Clapton - Diamonds Made from Rain

Enya - Diamonds on the Water

Kiss - Black Diamond

Pink Floyd - Shine On You Crazy Diamond

Chris Rea - Diamonds

The Seekers - Emerald City

Fleetwood Mac - Emerald Eyes

Shirley Bassey - Goldfinger

Fleetwood Mac - Gold Dust Woman

Spandau Ballet - Gold

Neil Young - Silver & Gold

Neil Young - After the Goldrush

Neil Young - Heart of Gold

The Human League - You Remind Me of Gold

ELO - Train of Gold

Freda Payne - Band of Gold

Ian Boddy - Jade

Sade - Pearls

ZZ Top - Pearl Necklace

Glen Campbell - Rhinestone Cowboy

The Rolling Stones - Ruby Tuesday

John Martyn - Sapphire

Stevie Nicks - Bombay Sapphires

The B-52's - Topaz

Anything by Jade Warrior 

I was half-expecting Cristi to correct me again.

I would've had to leave out some great songs if I hadn't included "gold" in my list, and besides, a gold ring often includes a gemstone too. 

Technically, neither are rhinestones.

If the Guinness World Records site is to be believed, and they do have a reputation for checking and rechecking fairly vigorously before agreeing to include a record, then:

https://www.guinnessworldrecords.com/world-records/largest-amethyst-geode" rel="nofollow - https://www.guinnessworldrecords.com/world-records/largest-amethyst-geode

the aquamarines you showed don't have a good color. in the XXL- version of the German TV-show "Bares für Rares" ("Cash for Rarities") from June 22nd this year a top-quality aquamarine in the legendary "Santa Maria" color variation (which is considered to be the best) having 35 carats was sold for €21000

 

Since we’re talking beryl, have you seen a trapiche emerald, Ozgur? I figure if you like star sapphires, you possibly like trapiche emeralds? I’ve seen plenty of star sapphires, but I’ve never seen a trapiche emerald. (Obviously they are considerably rarer than star sapphires, so quite possibly you’ve not either - but given your interest, maybe you have?)

Possibly. I would have to take your word on that, but I don’t disbelieve you. I know it as celestine, but that is possibly because I worked at a jewellers, and celestine is a “nicer” name.

I had never heard it called celestite before, so perhaps it is a geographical thing as to which name people call it by. Similar, I guess to aluminium and aluminum (which I just had a bloody hard time typing, as it kept being auto-corrected).

It’s very pretty, regardless.

according to Heide Rezepa-Zabel, who is a professional gemstone evaluator and the expert who evaluated this gem, this is not true. she said:

"Santa Maria is a color designation and a trade mark. this singular color (put into bold by me) was so rare that it was first discovered in the Santa Maria de Itabira mine in Menas Gerais in the 1920s. ... these stones were found over a period of about 25 years".

here a link to a website which says the same:

https://www.leibish.com/what-is-santa-maria-aquamarine-gemstone-article-1572" rel="nofollow - https://www.leibish.com/what-is-santa-maria-aquamarine-gemstone-article-1572

here an excerpt from this article describing the main characteristics of a Santa Maria gemstone:

Most gemstones are assessed using the 4 Cs: color, clarity, cut, and carat. Color is of utmost importance for colored gemstones like aquamarine stones. Therefore, they are first categorized by the quality and type of color that they display, such as a Santa Maria blue. Clarity refers to the imperfections or the lack thereof, within a stone. For colorless stones it is ideal to be as clear and void of inclusions as possible. While it is still of great significance to showcase impressive clarity, color gemstones, particularly beryl, generally possess some sort of imperfection. Having said that, Santa Maria aquamarine gemstones are known for being ‘eye clean,’ meaning, inclusions cannot be detected by the unaided eye. In terms of cut, aquamarine stones need to be cut with sharp angles and symmetric patterns because of their reflective nature. This is why stones with a high clarity can still appear dull if they have a poor cut. Lastly, it is difficult to find a Santa Maria aquamarine in large carat sizes. Half a carat is about the largest size for an average stone. However, LEIBISH is fortunate enough to possess a 1.23-carat Santa Maria oval-shaped aquamarine gemstone.

https://www.leibish.com/earrings-jewelry/multi-color-sapphire-aquamarine-earrings-tw495cts-27852" rel="nofollow">

this article mentions that aquamarines of this color are now called "Santa Maria" regardless of their origin; Heide Rezepa-Zabel mentioned this too. but from the way the socket was crafted she could date it into the 1920s and was extremely certain that this gem is really from the original Santa Maria mine. I uploaded her expertise; the video is of course in German.

the expertise stated that this gemstone was top in all 4 regards: color, clarity, cut and carat.

of course there are offerings of so-called Santa Maria aquamarines in the internet, but only very few of those are real ones

Very cool!

this is stunning, but I'd like to see other pictures of it (with maybe less tricky lightning).

.

Incredible acicular and radial blue Dumortierite crystals in water clean quartz.

Location : unique mine in the world Vaca Morte, Bahia, Brazil.

Official discovery 2014 GIA

http://www.funtrivia.com/trivia-quiz/General/Gemstones-139554.html" rel="nofollow - http://www.funtrivia.com/trivia-quiz/General/Gemstones-139554.html