Constantinople Ring in Black Onyx & Blue Topaz

Type: Adjustable cocktail ring
Closure: Open band, fully adjustable
Fit: US 6 to US 10

Black Onyx: Black Onyx is a smooth, opaque black variety of Chalcedony. Most commercially available Black Onyx is dyed from grey or banded Agate, a practice that is standard and fully accepted in the jewelry industry. Sourced primarily from Brazil, India, and Uruguay.

Blue Topaz: Blue Topaz is a variety of Topaz whose vivid blue color is produced through irradiation and heat treatment of natural colorless Topaz, a process that is universally accepted in the gemstone industry. Sourced primarily from Brazil, Nigeria, and Sri Lanka.

Gold Plate Recycled Brass

Our jewellery is demi-fine and deserves a little care. 

Jewellery goes on last, comes off first — after perfume, moisturiser, and hairspray, and before you shower, swim, or work out.

Avoid prolonged exposure to moisture, chlorine, and harsh chemicals. These will wear down gold plating over time.

Store pieces individually in the pouch provided. For sterling silver, an airtight bag reduces tarnishing.

Clean gently with a soft cloth after each wear. For a deeper clean, use a silver polishing cloth. Never use alcohol-based or abrasive cleaners on plated pieces or gemstones.

Every gemstone used in our pieces is natural and one of a kind. Variations in colour, tone and inclusions are part of their inherent character, not flaws.

SINGAPORE DELIVERY
Same day delivery available for orders placed before 12 noon.

Courier orders are dispatched within 24 hours.

SmartPac (postal) orders are shipped every Monday.


INTERNATIONAL SHIPPING
We ship worldwide. International orders are shipped every Monday.

Estimated delivery: 7–14 working days, depending on location.

Delivery rates are calculated at checkout.

We offer a no-questions-asked refund or exchange on full-priced online purchases within 7 days of receipt.

Email sales@shoplustre.com within 7 days of delivery with your order number, photographs, and whether you'd prefer a refund or exchange.

If approved, items must be unworn, in original packaging, and returned using a trackable service within 7 days of approval. Return shipping is the customer's responsibility.

Sale items, custom pieces, and items purchased in person are final sale.

See our full Returns Policy for details