• Boulder seam opal necklace on leather cord
  • A polished triangle-shaped dark stone pendant with iridescent brown, purple, and gold marbling, suspended from a black cord on a textured beige surface.
  • Boulder seam opal necklace on leather cord
  • A natural opal pendant necklace with a triangle-shaped stone on a black cord, displayed on a textured beige surface.
  • Boulder seam opal necklace on black leather cord
  • A polished natural opal pendant with a dark purple and metallic copper-brown marbled pattern, threaded on a black cord, resting on a textured beige fabric background.
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Georgie's Gem Studio

Boulder Seam Opal Necklace – Triangle Matrix

Boulder Seam Opal Necklace – Triangle Matrix

£69.00 GBP
£69.00 GBP
Sale Sold out
Taxes included. Shipping calculated at checkout.

Earthcrest - A boulder seam opal that looks like layered earth glowing from within, its flashes rising gently across the triangular surface like colour emerging through ancient stone.

This double‑sided boulder seam opal necklace features a striking matrix pattern that resembles layered earth, with broad flashes of green, blue and purple across its polished triangular surface. 

The upside‑down rounded triangle shape gives it a unique, organic feel, while the natural matrix textures add depth and character.

With brightness 3, the colour play is gentle but clearly visible, making it an easy everyday piece with artisan charm.

The 30 × 20 × 3 mm solid opal is finished on an adjustable leather cord and sourced directly from the miner - a grounded, nature‑inspired necklace perfect for gifting or casual wear. 

  • Opal Type: Boulder Opal 
  • Format: Seam
  • Colour: Green, Blue, Purple 
  • Pattern: Broad Flash with matrix 
  • Shape: Rounded triangle (earth‑layer look) 
  • Finish: Polished 
  • Brightness: B3 (of 5) 
  • Stone Dimensions: 30 × 20 × 3 mm 
  • Weight: 6 g 
  • Fitting: Leather cord (adjustable) 
  • Source: Miner‑direct
  • Origin: Boulder Opal Fields, Queensland, Australia
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  • About Our Opals

    Every stone is natural, untreated, and individually cut.
    No two opals are ever the same - each piece is one‑of‑a‑kind. We source directly from a small Australian mining family, from ethical and regulated opal fields.

    All photos are taken with a macro lens, remember to check the opal dimensions before purchasing.

  • Why Buy From Us

    We only work with Australian opals. Every opal is sourced directly from a small‑scale Australian mining family who work with integrity, fairness, and respect for the land. Ethical sourcing and environmental responsibility matters to us.

    We want you to be delighted with every purchase, so please read our policies or contact us if you want to find out more:

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