Sirius Round Lab Grown Diamonds Ring AD Sirius LAB BR 18K WG Spinelli Kilcollin Silver Sirius SG Ring Spinelli Kilcollin Sirius Ring 18K Rose Gold Vermeil DeGrey & Mason Gold Diamond Star Sirius Ring For Sale at 1stDibs. The Sirius is an iconic ring, with a minimalist, unisex design that puts material first. Featuring a band of either . 925 sterling silver or 18k yellow gold adorned with three unfixed annulets, the Sirius is stunning worn alone or as an orbiting addition to other Spinelli Kilcollin rings. Individually handmade in Los Angeles. Fit Tip: due to interlocking rings we recommend going up a 1 2 size color: two tone band: . 925 sterling silver 2. 3mm gauge . 925 sterling silver band annulets: 18k yellow gold and . 925 sterling silver