What Gemstone Is This?

How AI Gemstone Identification Works

The AI examines your photo for color, transparency, luster, crystal structure, and inclusions. It compares these visual characteristics against a database of known gemstone types to identify the stone, estimate carat weight from dimensions, and flag whether the stone appears natural or synthetic.

Results include the identified stone type, a confidence score, estimated carat weight, and notes on any visual indicators of treatments or synthetic origin. For loose stones, the AI can also suggest cut quality.

Gemstones We Identify

The tool covers precious and semi-precious stones including:

• Precious stones — Diamond, ruby, sapphire, emerald
• Semi-precious — Amethyst, topaz, garnet, peridot, aquamarine, tanzanite, tourmaline
• Organic gems — Pearl, amber, coral, jet
• Ornamental stones — Jade, turquoise, lapis lazuli, opal, moonstone
• Simulants detected — Cubic zirconia, moissanite, glass, synthetic corundum

Only know the color? Browse gemstones by color to match your stone — green, blue, purple, red, and more, each with hardness and value.

For a deeper dive into gemstone characteristics, our gemstone identification guide covers visual tests you can do at home, and our guides on testing specific stones like diamonds and rubies go into more detail.

Tips for Better Results

Use natural daylight and avoid flash (it creates misleading reflections). Photograph against a plain white or neutral background. Include a shot from directly above and one from the side. For stones still in a setting, make sure the stone face is visible and well-lit. Closer is better: use your phone's macro mode if available.

Frequently Asked Questions

What gemstones can this tool identify?

The AI identifies diamonds, rubies, sapphires, emeralds, opals, jade, turquoise, amethyst, topaz, garnet, pearls, amber, and dozens more. It also detects common simulants like cubic zirconia, moissanite, and glass.

Can the AI tell if a gemstone is natural or synthetic?

The AI flags visual indicators of synthetic or lab-created stones, but definitive natural vs synthetic determination often requires lab equipment. Use this as a screening tool, not a final verdict.

How should I photograph my gemstone for best results?

Use natural daylight, avoid flash, and photograph against a plain white background. Get one shot from directly above and one from the side. For stones still in a setting, photograph the stone face-up with good lighting.

Is the gemstone identifier free?

Yes. Upload a photo and get an instant identification with no sign-up required. The tool identifies the stone type, estimates carat weight, and flags whether it appears natural or synthetic.