Monarch Opal Cabochon Pair – Lab-Created Sterling Opal Gemstones, Matched Set for Pendant & Earring Making, 15x20mm

Monarch Opal Cabochon Pair – Lab-Created Sterling Opal Gemstones, Matched Set for Pendant & Earring Making, 15x20mm

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Product Specifications

Stone Name Lab Created Monarch Opal Cabochon Pair, Sterling Opal
Stone Color As seen in photos
Weight 12 Cts total (pair)
Size Approx 15 x 20 mm each
Quantity 1 Pair (2 pieces)
Shape Fancy
Treatment Lab Created
Back Side Flat
Quality AAA
Gemstone Type Treated
Origin USA
Use Jewelry Making (Pendants, Earrings)
Setting Style Bezel or Wire Wrap
Care Wipe with soft dry cloth; avoid harsh chemicals

Product Overview

Two greens that never quite match — and that's exactly the point.

Lay these two side by side and you'll notice they're not identical twins — they're more like siblings. Same forest-green base, same electric flecks of neon green catching the light, but each stone carries its own pattern of dark, web-like matrix lines running through it, no two lines the same.

That's part of what makes a matched pair like this fun to work with instead of boring.

These are lab-created Monarch opals, cut as oval cabochons with a flat back, so they sit flush and stable in a bezel setting — no dome to fight with when you're soldering or gluing.

At roughly 15x20mm and around 12 carats total weight for the pair, they're sized right for a pair of drop earrings or two matching pendants, and the flat back also makes them a solid pick if you're wire-wrapping rather than bezel-setting.

The color is the whole story here — a dark, almost bottle-green ground with that classic opal-style fire scattered through it in bright lime and green sparks. Under direct light the flecks really wake up; in shade they settle into a moodier, quieter green.

Because they're lab-created, you get that saturated, consistent color without the price tag or the fragility concerns that come with natural opal, and they'll hold up better to everyday wear and the occasional bit of moisture.

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Product Frequently Asked Questions

They're a matched pair in size, shape, and overall color tone, but since each stone has its own natural-looking matrix pattern, no two will be 100% identical — that's part of what gives each piece character.

The flat back and 15x20mm size work great for pendants and earrings, but you can use it in any bezel setting — including rings — as long as your setting accommodates that size.

Yes, lab-created opal is generally more stable and less prone to cracking than natural opal, since it doesn't have the same moisture-sensitivity issues. Still, avoid harsh chemicals and extreme temperature changes.

Either works. The flat back makes bezel setting easy and secure, but wire-wrapping is also a solid option if you prefer an open, exposed-stone look.

Definitely. The flat back makes it beginner-friendly for both techniques — there's no dome to work around, so it sits flat and stable while you're learning to shape wire or press a bezel.