I love love love JB Star above all others! They are my first choice I go to when buying a colored gemstone. In my photo above, I bought my Ceylon sapphire loose, and my setting is done by JB Star.
My recent emerald ring is modelled after a JB Star setting. I was actually going to buy the JB Star emerald ring, but I couldn't do it for a single piece. JB Star said they no longer allow you to buy your own stone; you have to procure through them. So off I go to the gem show to custom make my own ring (my jeweler made notes on the JB Star emerald ring as I showed him the designs on it I liked when they brought it in for me to try on).
It really all depends on your budget. If you are not price sensitive like I am, you definitely must check out JB Star. I am 100% certain you will find a sapphire ring you love and will not need to go down the loose stone path. JB Star stones and workmanship are absolutely beautiful. Their settings are handmade using platinum. Their side diamonds are gorgeous, their melee diamonds are full cut, not single cut melees (Rafael, the designer, is the son of a diamond manufacturing company who used to be a sightholder). JB Star also exhibits at the AGTA gem show in Tucson (for high end colored stones limited to the trade only), but you have to be a trade member to get into that particular show. If you are interested, I can tell you how to get in (please PM me). I truly love love love JB Star. I even asked if I could see their showroom (got a big fat no). Okay, enough about them... my husband is sick of hearing about JB Star too.
But warning... at the end of the day, JB Star is not a major brand (nor is Bayco) in terms of resale value. If you plan to resell, you will be disappointed and not get a lot. Colored gemstones just do not command high resell value unless you go with a major house such as Cartier, Graff, VCA and the amount is over $100K. And even then it's not really a guarantee because these pieces custom and not mass produced so there is not a known demand say, like a VCA Lotus ring.
That's been my logic, and I share it with you in this now long thread (ugh... I need to zip it and quit typing) because I have spent many hours thinking how best to buy bling and what really matters to me.
I am sure you also have lots of beautiful jewelry and your own buying philosophy.
Your philosophy may be different than mine, and I would truly love to hear a different point of view to help shape my thinking. In the end, all jewelry is emotional and not considered an investment (some would say jewelry is a money pit). But the pure enjoyment of wearing and looking at my bling, to me, is priceless.
Also, thank you so much for starting this thread. This is really great to share information and to learn from other lovers of jewelry, so thanks!
P.S. That cushion cut sapphire ring in your post is stunning!