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Loose Black Onyx Rectangle Cut Natural Untreated Onyx Stones 12mm x 10mm 4.00ct

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These stones are 100% genuine, untreated and are sourced responsibly.

Natural & untreated.

The sizes of these stones are approximate but to the nearest 0.10mm.

Gemstone – Onyx

Gemstone Weight – 4.00ct Approximately

Gemstone Clarity – Eye clean

Gemstone Cut Grade – Ideal

Gemstone Shape – Rectangle Flat back

Gemstone Treatment – No enhancements

Gemstone Creation – Natural

Gemstone Length – 12mm

Gemstone Width – 10mm

Gemstone Colour – Black


Photos are taken in studio lighting and 10x zoom.

The object may look smaller and brighter than it appears.

The photos does not show the actual size. Please refer to the detailed description for the gemstone sizes in millimetres.

Colour may vary slightly due to the colour calibration of each individual screen this listing in being viewed on.

Please see our other items for more loose gemstones.