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Brilliant_Rock
- Joined
- Jan 6, 2019
- Messages
- 823
There are several different processes used to grow the crystals, and the cost of the material based on the process used is often quite stark. Much of the sapphire and ruby is made by the Verneuil process sometimes called Flame Fusion. This is in most cases the least expensive method. One major disadvantage of this method is uneven color, especially in blues where the color is located at the outer edge of the boule. Another method used for sapphire that produces a better crystal is the Hydrothermal method. Stones grown by this method require complex equipment for a lab to identify as lab created. Prices of the rough from this method are 33 to 100 times more expense per ct than Flame fusion, depending on the color.
The Czochralski process is another expensive process that produces stones that almost impossible to distinguish from natural stones. Prices are similar to Hyrdrothermal. Some of the spinel I cut is from this method. There are a few other methods, but these 3 are the most commonly used.
There are other materials that don't have the same composition and properties of natural stones, these resemble the natural crystals in appearance only.
My jeweller finally finished the setting and i got my ring with a nice lab sapphire from Bryan (stag and finch) Princess Diana style!
Very happy with how it turned out! the stones on the halo are 0.025ct Lab diamonds bought from Ouros Jewels! All made using old gold from my recently passed grandma so it has a special memories attached and make it even more precious
and the photo that showcases the sapphire best made by bryan:
Beautiful
how accurate is the color in the picture? looks more like cornflower sapphire than cobalt spinel tho
Thank you for asking...I would hate for someone to pass on one of these because of my photo.
I actually wondered the same thing in Gene's photo but bought based on the video...I think the facets throw the color off in photos. Colors/tones vary so much when I go from device-to-device..that I've give up the art of photo taking
But to answer your question - It definitely is bright neon hauyne-like blue found in cobalt spinel.
I tried to take this picture so you can see three together:
- Double halo ring is a ceylon sapphire. IRL it has a very slight purple modifier because it is unheated.
- The tiny stacker is my Luc Yen cobalt spinel (Khau KA mine). It is a little darkened by the bezel setting (which I regret by what does one do with such a wee one?).
- The loose stone the coblat lab spinel from Gene.
Both the geniuine and lab cobalt spinel are a pure bright neon blue compared to the sapphire.
btw what cut is your spinel? gene's square cushion?
@lilmosun What are your plans for the lab spinel?
My jeweller finally finished the setting and i got my ring with a nice lab sapphire from Bryan (stag and finch) Princess Diana style!
Very happy with how it turned out! the stones on the halo are 0.025ct Lab diamonds bought from Ouros Jewels! All made using old gold from my recently passed grandma so it has a special memories attached and make it even more precious
and the photo that showcases the sapphire best made by bryan:
I'm thinking about getting a lab-created hot pink sapphire, 12X10.
Does anyone know if Chatham is precision cut? I didn't see it stated on any of the info. I found about them.
Or if it even matters that much if it's precision cut?
Or anywhere to get a nice stone for less? (On the site below, it would be $2,054 but I thought I saw this size listed for around $1,500 somewhere, though maybe not Chatham brand).
Or anything else about it?
Thanks.
ETA: I like the antique cushion cut best but I think I might find more options for settings if I get an oval, which is nice too.
Pink Sapphire Antique Cushion Cut in Grade GEM | Chatham Lab Stone
Buy CHATHAM CREATED Pink SAPPHIRE gemstones in Antique Cushion cut. The entire inventory is in stock and on sale.www.africagems.com
And the recommended businesses are Precision Gem, Stag and Finch, and Jeff White, correct?
My jeweller finally finished the setting and i got my ring with a nice lab sapphire from Bryan (stag and finch) Princess Diana style!
Very happy with how it turned out! the stones on the halo are 0.025ct Lab diamonds bought from Ouros Jewels! All made using old gold from my recently passed grandma so it has a special memories attached and make it even more precious
and the photo that showcases the sapphire best made by bryan: