Joie de Vivre jewelry

w e i g h t e d   a v e r a g e

The weighted average is one of the unsung heroes of math, especially for those of us that love conditionals. An average is great, if all the quantities can be assumed to be drawn from the same distribution, but with a weighted average, each element gets its own story - its own weight. Weighted averages can get a bad name from the infamous grade calculation: 25% of your grade from your homework scores, 50% from your test scores and 25% from your final, and so on. As the semester was drawing to a close, I watched students figure out just how hard they needed to be studying for the final. In truth, we use weighted averages all the time. How much money to set aside for holiday toys? How much spaghetti to make tonight? How far can I go on this tank of gas? Even with this pendant: you might say, "I like gemstone pendants" - a nice average statement where your feelings about any one gemstone are approximately the same. But what if you said, "I like garnets better than any other gemstone"? Now your feelings about garnets are different than other gemstones, and that will bias how you select jewelry. Or maybe you say, "I only buy cabochon gemstone jewelry" or "small jewelry pendants don't work with my wardrobe". If I wanted to, I could assign some numbers to these feelings - these biases - and voila, we could have a jewelry selection algorithm that could quantify how likely you are to buy this necklace compared with another. I hear people say they don't like math, which is too bad because it can be a lot of fun. The next time someone says they can't do math, remind them of weighted averages.

Cost: $36.00 USD

Gift Recipient Name

g i f t   i n s t r u c t i o n s : 

If this item is going to be a gift, enter the gift recipient name in the text box when you add this item to your cart. If your entire order is going to one recipient (yourself or other), no other action is needed and you can specify the shipping address in PayPal checkout. However, if you would like multiple recipients in the same order, we can accommodate that! Before you check out, make sure to add a gift box to your cart for each gift recipient in your order. You will be charged $4.95 USD for each recipient other than yourself and you'll need to add the recipient name and address to the gift box text field. Also, each recipient can receive multiple items for the same $4.95 gift box fee; just continue to specify their name when adding items to your cart.

c a t e g o r i e s :

M a t e r i a l s  &  C a r e 

Length: necklace - 18"


  • rainbow moonstone and garnet cabochons set in sterling silver
  • sterling silver 1mm snake chain

Care & cleaning: Clean with warm soapy water and avoid chemical or abrasive cleaners. Use a soft jewelry polishing cloth to clean tarnish appearing on silver.

The pendant and chain are robust to toddler tugs, but as with all beaded jewelry: do not let young toddlers chew on it.

W h a t  t o  W e a r 

This 18" chain and pendant are versatile and can be worn with casual tops (crew necks, V-necks) and deeper V collared shirts.