Paweł Waś
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Kevin Coates, nautical ring design illustration

Kevin Coates, nautical ring design illustration

Demantoid garnet with "horsetail" chromite inclusions

Demantoid garnet with "horsetail" chromite inclusions

Demantoid garnet, demonstrates horsetail inclusion, typical

Demantoid garnet, demonstrates horsetail inclusion, typical

Demantoid horsetail

Demantoid horsetail

Demantoid garnet from Russia with horsetail inclusion

Demantoid garnet from Russia with horsetail inclusion

Julie Lamb bi-color tourmaline and diamond earrings.

Julie Lamb bi-color tourmaline and diamond earrings.

Gypsy Rose Garnet gemstone  John Dyer & Co.

Gypsy Rose Garnet gemstone John Dyer & Co.

Bi-color tourmaline weighing over 50 cts. Bi color tourmaline is the name given to tourmaline which displays more than one color in the same cystal.

Bi-color tourmaline weighing over 50 cts. Bi color tourmaline is the name given to tourmaline which displays more than one color in the same cystal.

Image of RARE GEMSTONE: BI-COLOR TANZANITE - 7.79 CT.. Tanzania. ... | Lot #73135 | Heritage Auctions

Image of RARE GEMSTONE: BI-COLOR TANZANITE - 7.79 CT.. Tanzania. ... | Lot #73135 | Heritage Auctions

This 11.21-carat bicolor tourmaline is a supreme example of both the gem material and the cutter's art. The stone has intense colors, a clean junction between the zones, and the highest clarity. Lydia Dyer, gem courtesy of John Dyer & Co. -from http://www.gia.edu/tourmaline-quality-factor

This 11.21-carat bicolor tourmaline is a supreme example of both the gem material and the cutter's art. The stone has intense colors, a clean junction between the zones, and the highest clarity. Lydia Dyer, gem courtesy of John Dyer & Co. -from http://www.gia.edu/tourmaline-quality-factor