Sierra
Sierra, the Spanish word for mountain range connotes strength and might.
The side diamonds in this gorgeous collection are set like little mountain peaks so the lucky wearer has a Sierra to view forever.
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View BagDiscover a piece of luminous, otherworldly beauty with the 18ct Yellow Gold 1.25ct Opal & Diamond Sierra Ring, meticulously crafted to honour the magic of Australian opal. At its centre rests an oval cabochon opal, celebrated for its captivating play of colour—ribbons of blues and greens entwine with flashes of fiery orange, creating a shifting, painterly landscape that reveals something new with every glance. The smooth cabochon surface allows the colours to pool and dance beneath the light, giving the stone an ethereal depth that feels both mysterious and irresistibly inviting.
Encircling the opal, a halo of round brilliant diamonds enhances the gem’s natural drama, catching and reflecting the opal’s colours to amplify its glow, while a fine line of diamonds continues along the shoulders to add subtle sparkle without overwhelming the centre stone. Crafted in warm, polished 18ct yellow gold, the Sierra setting offers a luxurious backdrop for the opal’s cool‑toned palette, balancing its blues and greens with a golden embrace. Intricate detailing and diamond accents beneath the setting create interest even from the side profile, revealing the level of craftsmanship woven into every curve.
Whether chosen as a statement right‑hand ring or a meaningful occasion piece, the Opal & Diamond Sierra Ring is designed to be worn and loved often. Its blend of classic diamond elegance and the opal’s unique, shifting spectrum makes it a treasure that stands apart, perfect for those who are drawn to jewellery with both story and soul. Destined to become a modern heirloom, it captures light, colour and memory in one unforgettable design.
Please note this is a charm only; chains are sold separately.
Our Noted chain, specially designed to fit Noted charms, is linked in the product description. Noted charms may not fit on other chain styles.
Congratulations, this item is Pre-Loved so you are making a sustainable choice to value existing resources and continue the story. All Pre-Loved pieces come with a one year guarantee.
Happy Hour purchases are final and cannot be returned for a refund, exchange, store credit, or cash - unless faulty.
Shipping to Australia is available and the shipping rate is calculated in the checkout. Taxes/duties are displayed in the checkout if applicable.
Walker & Hall women's rings are usually made in size N and men's rings are size U.
Buying a gift? Please see our Exchanges and Returns page for more information.
Gold, Platinum and Sterling Silver - Rings can be resized or custom made in any ring size, please note a resizing charge may apply. Walker & Hall offer a complimentary ring fitting for rings from our signature 1899 Collection. Receive a professional fitting and we will arrange your ring to be resized or made specially in your perfect size, up to $400 value. The timeframe for resizing and custom made rings is usually 2-6 weeks depending on the ring style.
Titanium, Cobalt Chrome and Zirconium - Rings cannot be resized and where possible will be custom ordered. Please contact us with your ring size and style to confirm availability of your required size. The timeframe for custom made rings is 1-4 weeks depending on the ring style.
Last Chance rings are unable to be resized or reordered.
View Full Size GuideTo keep your jewellery looking it's sparkling best, we recommend that you avoid wearing your jewellery during activities such as cooking, cleaning, gardening, swimming/showering and particularly sporting and gym activities.
Apply cosmetics and perfumes and allow them to dry before putting on your jewellery and avoid contact with chlorinated water and other chemicals.
To maintain the appearance of your jewellery and to reduce scratching, store items separately in sealed plastic bags, jewellery pouches or boxes.
White Gold - White gold is rhodium plated and will require ongoing maintenance.
For more information and jewellery cleaning tips, view our Jewellery Care Guide.
Risk free online shopping - Online orders (excluding tax free) can be returned for a full refund within 14 days.
In store purchases and online orders can be returned for a gift certificate or exchanged within 30 days.
Please see our Returns & Exchanges page for more information including our returns policy and returns/exchanges form.
Sierra, the Spanish word for mountain range connotes strength and might.
The side diamonds in this gorgeous collection are set like little mountain peaks so the lucky wearer has a Sierra to view forever.
Hallmark of Quality
Our signature 1899 Collection is a celebration of our heritage; Walker & Hall was established in New Zealand in 1899.
Crafted in superior quality metals and featuring high clarity accent diamonds, a design from the 1899 Collection is a piece you will be proud to treasure for generations to come.
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