Verneuil Synthetic Ruby Inclusions

E. Billie Hughes

First Published: 7 September 2026

Verneuil (Flame Fusion) Synthetic Ruby Inclusions

Explore inclusions and internal features in Verneuil (flame-fusion) synthetic ruby in Hyperion, the Lotus Gemology inclusion database. Photomicrographs are accompanied by descriptive information and published references where available.

25–36 of 47

This Verneuil ruby synthetic was quench crackled and then flux heated to heal the fissures. Note the “honeycomb” pattern of the fissures, which is a telltale sign of quench crackling, which is when a stone is put under thermal shock to induce fissures.

This Verneuil ruby synthetic was quench crackled and then flux heated to heal the fissures. Note the “honeycomb” pattern of the fissures, which is a telltale sign of quench crackling, which is when a stone is put under thermal shock to induce fissures.

Synthetic Ruby • Verneuil • Enhancements: Heat + Fissure Healing (H-FH) • Lighting Conditions: White and blue filters + shadowing
Photographer: E. Billie Hughes • Image Number: A-001-8123-1

Hughes, R.W., Manorotkul, W. et al. (2017) Ruby & Sapphire: A Gemologist's Guide. Bangkok, Lotus Publishing, 816 pp.; RWHL*.

Smoke-like wisps in a Seiko synthetic ruby.

“Hairpin” or “comet” -type flux inclusions in a Kashan flux-grown synthetic ruby. They are compposed of a larger flux droplet and smaller flux particles forming the tails along the growth direction.

Sharp angular growth zoning is present in this Kashan flux-grown synthetic ruby.

Tiny gas bubbles/particles in a Czochralski-grown synthetic corundum from Union Carbide.

Fine striae in a Czochralski-grown synthetic corundum from Union Carbide.

Growth marks on the basal pinacoid of a Douros synthetic ruby.

Growth marks on the basal pinacoid of a Douros synthetic ruby.

Synthetic Ruby • Flux • Enhancements: None Detected (None) • Lighting Conditions: Dark Field + Overhead Fiber Optic
Photographer: E. Billie Hughes • Image Number: R-001-5855-1

Hughes, R.W., Manorotkul, W. et al. (2017) Ruby & Sapphire: A Gemologist's Guide. Bangkok, Lotus Publishing, 816 pp.; RWHL*.

Hänni, H.A., Schmetzer et al. (1994) Synthetic rubies by Douros: A new challenge for gemologists. Gems & Gemology, Vol. 30, No. 2, Summer, pp. 72–86; RWHL*.

Two-phase primary flux-filled cavities in a Douros synthetic flux ruby.

Two-phase primary flux-filled cavities in a Douros synthetic flux ruby.

Synthetic Ruby • Flux • Enhancements: None Detected (None) • Lighting Conditions: Dark Field
Photographer: E. Billie Hughes • Image Number: R-001-5854-5

Hughes, R.W., Manorotkul, W. et al. (2017) Ruby & Sapphire: A Gemologist's Guide. Bangkok, Lotus Publishing, 816 pp.; RWHL*.

Hänni, H.A., Schmetzer et al. (1994) Synthetic rubies by Douros: A new challenge for gemologists. Gems & Gemology, Vol. 30, No. 2, Summer, pp. 72–86; RWHL*.

Two-phase primary flux-filled cavities in a Douros synthetic flux ruby.

Two-phase primary flux-filled cavities in a Douros synthetic flux ruby.

Synthetic Ruby • Flux • Enhancements: None Detected (None) • Lighting Conditions: Dark Field
Photographer: E. Billie Hughes • Image Number: R-001-5854-4

Hughes, R.W., Manorotkul, W. et al. (2017) Ruby & Sapphire: A Gemologist's Guide. Bangkok, Lotus Publishing, 816 pp.; RWHL*.

Hänni, H.A., Schmetzer et al. (1994) Synthetic rubies by Douros: A new challenge for gemologists. Gems & Gemology, Vol. 30, No. 2, Summer, pp. 72–86; RWHL*.

Two-phase primary flux-filled cavities in a Douros synthetic flux ruby.

Two-phase primary flux-filled cavities in a Douros synthetic flux ruby.

Synthetic Ruby • Flux • Enhancements: None Detected (None) • Lighting Conditions: Dark Field + Diffuse Fiber Optic
Photographer: E. Billie Hughes • Image Number: R-001-5854-2

Hughes, R.W., Manorotkul, W. et al. (2017) Ruby & Sapphire: A Gemologist's Guide. Bangkok, Lotus Publishing, 816 pp.; RWHL*.

Hänni, H.A., Schmetzer et al. (1994) Synthetic rubies by Douros: A new challenge for gemologists. Gems & Gemology, Vol. 30, No. 2, Summer, pp. 72–86; RWHL*.

Two-phase primary flux-filled cavities in a Douros synthetic flux ruby.

Two-phase primary flux-filled cavities in a Douros synthetic flux ruby.

Synthetic Ruby • Flux • Enhancements: None Detected (None) • Lighting Conditions: Dark Field
Photographer: E. Billie Hughes • Image Number: R-001-5854-1

Hughes, R.W., Manorotkul, W. et al. (2017) Ruby & Sapphire: A Gemologist's Guide. Bangkok, Lotus Publishing, 816 pp.; RWHL*.

Hänni, H.A., Schmetzer et al. (1994) Synthetic rubies by Douros: A new challenge for gemologists. Gems & Gemology, Vol. 30, No. 2, Summer, pp. 72–86; RWHL*.

Highly reflective platinum plates shine in this Lechleitner flux-grown synthetic ruby.

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Search the Complete Hyperion Database

Inclusions and growth features in Verneuil (flame-fusion) synthetic ruby can provide evidence of laboratory growth. Their appearance and associations should be evaluated together with other gemological observations when identifying the material.

Verneuil (Flame Fusion) Synthetic Ruby Inclusion Photomicrographs

The Hyperion gallery presents microscopic features documented in Verneuil (flame-fusion) synthetic ruby. Each entry includes descriptive information and references to the gemological literature where available.

What Inclusions Can Reveal About Verneuil (Flame Fusion) Synthetic Ruby

Microscopic examination helps distinguish Verneuil (flame-fusion) synthetic ruby from natural material. Inclusions and growth structures are considered alongside other gemological properties when assessing evidence of synthetic origin.

Hyperion combines inclusion photomicrography with supporting gemological information, allowing features in Verneuil (flame-fusion) synthetic ruby to be compared with documented examples.

About Hyperion

Hyperion is the Lotus Gemology searchable inclusion database. It allows users to browse gemstone inclusions by gem type, geographic origin, treatment and keyword.