Round Sirius Star Cathedral Basket Setting with Diamond Accented Band - "Castalia"

Inspiration: Castalia was a nymph that was transformed into a fountain by god Apollo. It was believed that anyone who drank from the waters of the fountain would be inspired by beauty and find true love.

Sirius Star® -"The World's Brightest Diamond"®

Ring Size
Metal: 18K White Gold
Cut To Order

Because we offer the exclusive and only cut to order diamond service in the world, please allow 25 business days between your order submission and delivery.


0.5 Carat Weight = 0.5 to 0.52

0.7 Carat Weight = 0.7 to 0.72

1.0 Carat Weight = 1.00 to 1.05

1.5 Carat Weight = 1.50 to 1.55

2.0 Carat Weight = 2.0 to 2.05

Sirius Star® Diamond - GIA Graded

Our Policy

At Sirius Ice, we ethically source our Diamonds and Gem stones. We use recycled Gold and Platinum in our casting process. Social and Environmental responsibility are at the heart of every piece of jewelry we make.

Shipping & Returns

Free Shipping • 25 Business Day Delivery • Diamond Cut To Order • Free 30 Day Returns


This Cathedral setting is a revolutionary reinvention of a timeless classic. The Sirius Star® Center Diamond is set with four sleek prongs, giving this modern classic beautiful clean lines with a contemporary feel. Set into the band of the ring are more accent diamonds, giving this ring a beautiful and dazzling display of light return.

SKU: SS-BS-1001-S4-WG