This 1.405ct dark opal displays a striking flagstone pattern with deep green fire that shifts beautifully under changing light. Cut into a classic oval (11 × 7.35 × 2.7 mm), the stone shows a balanced play of colour with a brightness rating of 2/3 — lively enough to catch the eye while retaining the moody depth that dark opals are known for.

Sourced from Australia, this opal carries the characteristic richness of dark body tone that enhances its green flashes. The flagstone patterning gives it a structured, mosaic-like appearance, making it an excellent choice for collectors or for setting into a pendant or ring.

Every opal in our collection is individually selected for its natural beauty, and this piece is completely untreated. Its size and shape make it versatile for custom jewellery, while the unique pattern ensures it remains a one‑of‑a‑kind gemstone.

• Weight: 1.405ct

• Pattern: Flagstone

• Shape: Oval

• Dimensions: 11 × 7.35 × 2.7 mm

• Brightness: 2/3 • Colours: Green

• Origin: Australia

• Treatment: None (natural opal)

Learn more about the difference between black opals and dark opals in our detailed guide:

Black Opal vs Dark Opal – Body Tone, Value & How to Tell Them Apart