.999 fine silver 3.5ct. Natural green tourmaline necklace

this is a artisan made in Brazil .999 fine silver and 3.5ct. A quality natural untreated green tourmaline , blue white zircon and the gem missing at the top was replaced with a round faceted champagne topaz all stones are natural stones and are from Brazil and made by my good friends father who is a artisan in Brazil and it's mounted on a sterling silver Italian made box chain that is thick enough to carry the weight of the heavy large solid silver pendant . the condition is excellent . the pendant is pure silver so it will never tarnish like sterling silver does.