Gram weights for jewelry? What's it really "worth"?

I have a large collection of vintage jewelry that I'm selling on etsy.  Some of the jewelry is mine, but most is jewelry that I received as an inheritance from my aunt, my mom's half-sister, who lived a great, long life.  The jewelry was, for the most part, kept in bags and marked with little comments about where she acquired it, when, things like that.  I have kept a lot of the jewelry, but a number of items don't fit me, so I have offered them on etsy at really great prices.  I'd rather see the pieces go to people who will enjoy them, and I'm asking very reasonable (or maybe too cheap!) prices.

Most of the jewelry is made with real gemstones, pearls, sterling, gold.  I look at the quality (most of it is like brand new, never worn) and workmanship.  I compare prices for similar items.  I think the prices I ask are more than fair.

Vintage (Antique?) 14k Ring on Etsy

On etsy, I have a solid 14k ring for sale (seen in the picture).  It's a ring with a lot of ornate detail, diamond-cut engraved details, a dome ring.  Never worn, as far as I can tell.  And it is hallmarked 14k, so it's solid gold.  I don't know if it's 20 years old or 80 years old, or where it's from (it was in an unmarked box).  But I thought $100 was a good price for a solid, detailed 14k ring, and would be $90 if a buyer used my $10 off coupon. 

Today, someone asked me, "What is the gram weight of this ring?"

I didn't know what to say!  Should I feel insulted?  Because to me, the "gram weight of gold" is important to SCRAP dealers!  Like those places that offer "cash for gold" where you bring in your old broken chains and get a few bucks for it.

I simply don't even have a gram scale, as I'm not a jeweler or wholesaler or whatever type of business would have a gram scale.  I do have a ring mandrel and a millimeter gauge to measure gem sizes or band widths. I have a postal scale! But  I never even thought about a gram scale!  I'm a person selling vintage jewelry that I thought might find a new owner who'd appreciate the jewelry, rather than sitting in storage.

Isn't jewelry worth more than the sum of its parts?  Do people contact Tiffany, for example, and ask the gram weight of their sterling silver jewelry?  Because if they based the value on how much silver is in the product, by grams, Tiffany's sterling open-hearts band ring would only be worth maybe $46 for approximately two grams of silver (I'm guessing--they don't weigh their stuff), and not $175...  Do people look at a Dior gown and say, "How much is that silk fabric per yard used in that dress?"   Do you look at an oil painting and say, "Well, the canvas was about $18 and they used about $30 worth of paint, so they want WHAT for that Picasso??"  Hahaha,  I'm sure you get what I'm saying.

Just seems ridiculous to me, and a little insulting.  Is this person planning to scrap the ring for cash?  Is the gold ring only worth $100 if there are more than 4 grams of gold at $25 per gram at today's price?  Did they not want to WEAR the ring?

Is this insulting?  Sort of.  Am I being too sensitive?  I don't think so.  Isn't the style and artistry of a piece, and maybe it's age and condition, worth something beyond the cost of the materials?  Or is the "value of the metal" the way people buy vintage jewelry?

It's like the "value" of the human body is something like $160 if you separate and tally all the elements found within.  Is that really what it's worth?