Instead of jewelry, you could consider a ?

I got 3 orders from them in the past, and yes you will find sapphires. It's pretty fun making some light tables and spending evenings sifting for sapphires and garnets while you enjoy some wine or perhaps a bowl of chronic. We actually got a couple sapphires that we found faceted. Super activity for kids, too.

We buy each other gold and silver bullion

Just get her an old street cat from the shelter, women love that kind of stuff and it's free.

Jewelry is almost always welcome, and it doesn’t have to be expensive. Something shiny and pretty in Sterling silver can be very affordable. A bouquet of flowers from a local florist is always a good idea, and maybe dinner at a decent restaurant. If she has a specific interest, say she loves street cats from the shelter, go to Etsy and buy her a cat sculpture made from spare metal pieces. Etsy is great for niche gifts, and you can find nice jewelry there also. Birthstone for Feb is a diamond, so buy her some boho earrings made from herkimer diamond (really quartz, but very interesting crystal structures). Or some handmade copper jewelry made by a local craftsman. Do not go to Jared or a “jewelry store”. Prices are way marked up. Go to a local shop that carries items made from local artisans. You get much more bang for your buck.

Remember her birthday is the primary thing. It doesn't matter how great you believe your memory to be, you can wake up the morning of her birthday and forget you have a gift and all these plans. Days can blur together, especially at the extremes of nothing much going on at all, and everything going on at once. You can think 'tomorrow' is her birthday and not realize it was 'today' until the day comes to an end and you 'discover' the error. Set alarms, set repeating notifications every hour if you have to, just do not forget.

Regarding spending Have you already established a price point for one or more gifts that she may be expecting? If you go 'cheaper' on a gift than you had in the past, she will notice. It almost doesn't matter what you've gotten for her, if it cost less than her gift last year, she will read into it. Either stick to a set cost for her birthday (gift, dinner, event attendance, whatever) and never vary from it, or always increase as a way to signify that you are more financially-sound than the previous year.

Massage gift certificate if you know where she likes to go.

Yes. I think about things she likes and she shows interest in, especially in types, and buy them.

Not all jewelry needs to be expensive, for example. There are great products that show you care about her if you take some time to imagine how good it would look on her.

Observe her hobbies and interests, and buy her something she takes pride in doing or shows liking.

I kind of despise all of this obligatory gift giving. You can't just buy your SO a gift when you feel like it. Unless it's something small, It always ends up being a situation where you feel like you need to save it for the next obligatory gift-giving occasion.

Jewelry starts with Jew for a reason. Take her somewhere nice. I'd suggest the gun range.

Whatever you get her, it won't be good enough, so don't over think it. Whatever you do, don't even think about getting her something that is actually useful. Don't worry about not spending enough for her gift because whatever you spend, it won't be enough...