What Is Simulated Opal? Understanding the Jewellery Label

Simulated opal is a material used to resemble opal. The word describes a lookalike, rather than identifying the exact substance used. When a jewellery listing says “simulated opal”, read that full description before comparing it with natural or synthetic opal.

Simulated, synthetic and natural: three different descriptions

GIA’s guide to gem simulants explains that a simulant resembles another gem while having different composition or properties. Simulants can be natural or manufactured materials. The term alone does not tell you which material a particular centre contains.

• Natural opal: opal formed in nature.
• Synthetic opal: manufactured opal with characteristics closely corresponding to natural opal. GIA notes that additional compounds can be present in synthetic opal.
• Simulated opal: a lookalike described by its resemblance to opal; do not treat this label as interchangeable with synthetic opal.

GIA’s introduction to synthetic gem materials explains the distinction in more detail. “Made in a laboratory” by itself does not establish whether a material is a synthetic gem or a simulant: the material’s characteristics matter.

How to read Celine’s simulated-opal description

The Celine Opal Turtle Necklace specifications describe a simulated opal centre. The close-up below shows its blue-green appearance inside the turtle-shaped pendant. It is useful for seeing the design; a photograph does not identify the centre’s chemical composition.

Celine’s current specifications do not name the centre’s exact composition or manufacturing process. We therefore do not describe it here as natural opal, synthetic opal, glass or resin. If a particular material is important to your purchase, ask our care team about the individual design before ordering.

Compare the complete necklace as well as the centre

Once you understand the centre’s description, compare the necklace details that affect your choice. Celine currently offers Gold and Silver options, a listed approximate pendant size of 17 mm high × 12 mm wide, and a 45 cm chain with a 5 cm extender.

Use our pendant measurements guide to interpret those dimensions, or the Celine and Malia turtle necklace comparison to compare their designs. Those are separate decisions from what the centre’s material label means.

Before you choose an opal-look necklace

• Read the full centre or stone description, including words such as simulated or synthetic.
• Keep the centre’s description separate from the metal and finish information.
• Check the individual design’s dimensions, length and available option rather than judging size or material from an enlarged photo.

View Celine’s current options and specifications, or browse the necklace collection to compare other pendant shapes.