18K Gold Luxury Cabochon Cut Opal Ring – Hallmarked (750) | UK M US 6.5 | October Birthstone
-
Estimated Delivery:Jul 03 - Jul 07
-
Free shipping on all orders above £30
18K Gold Luxury Cabochon Cut Opal Ring – Hallmarked (750) | UK M US 6.5 | October Birthstone
Natural Opal Ring: 2.16 ct Fire-Blue Brilliance in 18K Gold Elegance
Bathed in gold and brilliance, this luminous creation centres on a 2.16 ct natural opal, hand-cut to a graceful 9×12mm oval. Its ethereal flashes of green, peach, and fire-blue shimmer against a hallmarked 18K gold setting, with the total ring weight resting at just 3.24 grams—balancing airiness with quiet strength.
| Feature | Details |
|---|---|
| Main Gemstone | Natural Opal, 2.16 carats – Oval cabochon (9×12mm), radiant play-of-colour |
| Accent Stones | Approx. 0.02ct melee diamonds – subtle brilliance, elegant detailing |
| Metal | 18K Solid Gold – Hallmarked, polished for warmth and durabilityHallmarked for authenticity and durability |
| Total Ring Weight | 3.24 grams – Slim yet substantial for daily luxury |
| Ring Size | UK M / US 6.5 / EU 52 / ⌀ 16.6 mm / Cir. 52 mm |
| Design Style | Minimalist bezel setting – secure, sculptural, heirloom-ready |
| Symbolism | Opal is the October birthstone; linked to creativity, clarity, and renewal |
| Craftsmanship | Fine jewellery finish – Boutique-level design with ethical sourcing |
What Makes an Exceptional Opal?
- Not all opals are created equal—exceptional opals display a captivating play-of-colour, shifting between flashes of green, blue, orange, and violet as they catch the light. A high-quality opal will have a vibrant, even distribution of colour across its surface, a clean cabochon cut, and minimal visible inclusions or cracks.
- The base tone—ranging from milky white to inky black—also affects rarity, with lighter stones like this one prized for their clarity and internal fire.
- Opals over 2 carats in a single setting, especially when finely set in 18K gold, are rare finds—making this piece both a visual delight and a collector’s investment.
PROS: Precious metal, Elegant glow, Luxurious feel, Perfect for gifting
CONS: May scratch, Needs gentle care, Soft by nature, Store separately
- Weight: Varies by design
- Authenticity: Hallmarked
- Quality Check: Material verified
- Tested: Diamond tester for gemstone
- Gift‑Ready: Perfect for gifting
- Care Free: Jewellery cleaning cloth included
More Information:
More information about jewellery
Learn about jewellery or watch animation.
| Style & Layer |
Materials & Care |
Design Stories |
Gems & Symbol |
Gift & Stories |
JewelWhy TV |
| Stories | JewelWhy | Motif | History | JewelSnap |
Every Order
Free JewelGift™
Surprise
A symbol chosen to travel with you — tucked into every order, free. No code needed.
Learn about JewelGift™ →Start with
JewelBuild™
Begin with a bracelet foundation, then add charms to build your own symbol story.
Build your jewellery →Part of the JewelHub System
Mix, stack, and build your own story within a modular system.
Caring for Your Fine Gold Piece
14k and 18k gold is a precious metal investment. With proper care it holds its colour and quality indefinitely — fine gold does not tarnish, but it can scratch and dull without attention.
| Daily wear | Remove during heavy physical activity, cleaning, and gardening |
| Cleaning | Warm water, a drop of mild dish soap, soft brush — rinse and dry with a lint-free cloth |
| Storage | Store separately — gold scratches easily when touching other metals |
| Professional care | Annual professional polish recommended for fine pieces |
| Avoid | Chlorine, bleach, harsh chemicals, and ultrasonic cleaners for pieces with stones |
Build Your Jewellery Story ✨
14K Gold Ruby Ring · UK P · US 8 · 1.29ct Gemstone · Wave Diamond Band
14K Gold Halo Ruby Ring · UK O · 1.38ct Gemstone · Floral Crest Design
18K Gold Ruby Fan Ring · UK M · US 6.5 · Diamond & Baguette Ruby Detail
18K Gold Black South Sea Pearl Ring · 11.5 mm Pearl · 0.42ct Diamonds · UK M
18K Gold Black South Sea Pearl Ring · 13 mm Pearl · 0.36ct Diamonds · UK L
18K White Gold Pearl Ring · 10.7mm Pearl · Diamond Cluster · UK N
18K Gold Sapphire & Diamond Ring - Geometric Row Design
