Sapphire dust is a crafting component in The Witcher 3: Wild Hunt that is needed to craft the following items:
- Black Unicorn
- Faramond's blade
- Fen'aeth
- Impera Brigade armor
- Lesser Glyph of Aard
- Lesser Zoria runestone
- Ofieri gauntlets (regular game only)
- Ofieri sharovary (regular game only)
- Viper venomous silver sword
- Legendary Viper venomous silver sword
It can be found as regular random loot, guaranteed drop from Hubert Rejk if he is killed during Carnal Sins, random drop from barghests in the Blood and Wine expansion, or purchased from the following merchants:
- All armorers and blacksmiths, except the one at Ardaiso Quarry
- Armors and weapons merchants in Nilfgaardian Army Group 'Center' Camp
- Alchemist in the Crematory near Oxenfurt Gate
- Merchant in the boatyard south of Refugees' Camp
- Merchant at Calveit Watchtower
- Merchant at Coast of Wrecks
- Merchant in the shop in Gildorf
- Merchant in Putrid Grove
- Merchant in the market northwest of Tretogor Gate
- Merchant in Ursten
- Merchant by the road west of White Eagle Fort
- Merchant at the sawmill northeast of Rannvaig
- Merchant at the Isolated Hut on Hindarsfjall
- Merchant in Mohrin Village
- Merchant in Stacheier
- Ofieri merchant at Upper Mill
Sapphire dust can also be obtained by dismantling:
- Addan Deith
- Anathema
- Ashrune
- Barber-Surgeon
- Belhaven blade
- Black Unicorn
- Blave
- Casus Foederis
- Deargdeith
- Deithwen
- Devine
- Faithful Friend
- Faramond's blade
- Fen'aeth
- Gesheft (crafted)
- Gwestog
- Impera Brigade armor
- Loathen
- Moonblade
- Ofieri gauntlets
- Ofieri sharovary (crafted)
- Princess Xenthia's sword
- Reach of the Damned
- Sapphire
- Tah'rel
- Tir Tochair blade (crafted)
- Tlareg
- Tor Lara
- Vitis
- Wild Hunt warrior's sword
- Winter Blade
- Zerrikanterment
- Grandmaster Feline silver sword
- Grandmaster legendary Feline silver sword
- Grandmaster Feline steel sword
- Grandmaster legendary Feline steel sword
- Viper venomous silver sword
- Legendary Viper venomous silver sword