The Fiordaliso design is an exquisite 5-fold symmetry faceting diagram created specifically for light-to-medium colored gemstones. Named after the Italian word for "cornflower" (referencing the iconic cornflower blue color of fine sapphires), this diagram maximizes brilliance and color dispersion through a Barion style pavilion.
Whether you are faceting natural Tourmaline, Aquamarine, Sapphire, or synthetic Blue Spinel, this guide provides the exact angles and cutting sequences to achieve maximum brilliance.
Key Cutting Specifications.
Specification Value
Design Name Fiordaliso
Refractive Index (R.I.)1.620 (Ideal for Tourmaline, Topaz, Sapphire)
Facets 86 Facets + 10 Girdles = 96 Total Facets
Symmetry 5-fold, mirror-image symmetry
Index Gear 80 Index
Proportions L/W = 1.051 | P/W = 0.453 | C/W = 0.146
(L/W, P/W, C/W)
Cutting Sequence & Angles.
PAVILION
Facet 1 (42.12°): Index 80-04-08-12-16-20-24-28-32-36-40-44-48-52-56-60-64-68-72-76 – Cut to form the centerpoint.
Facet 2 (90.00°): Index 80-16-32-48-64 – Set stone size (Girdle).
Facet 3 (90.00°): Index 08-24-40-56-72 – Leave 1 facet and meet Facet 1.
Facet 4 (62.16°): Index 08-24-40-56-72 – "Barion" facets (level girdle).
Facet 5 (40.87°): Index 02-06-10-14-18-22-26-30-34-38-42-46-50-54-58-62-66-70-74-78 – 1/2 facets will meet Facet 4. Cut to centerpoint.
Facet 6 (39.00°): Index 80-08-16-24-32-40-48-56-64-72 – Meet Facet 1.
CROWN
Facet A (44.00°): Index 08-24-40-56-72 – Set girdle thickness.
Facet B (30.48°): Index 04-12-20-28-36-44-52-60-68-76 – Meet girdle.
Facet C (13.85°): Index 08-24-40-56-72 – Meet A.
Facet D (9.00°): Index 08-24-40-56-72 – Meet B.
Facet F (32.32°): Index 80-16-32-48-64 – Meet D, level girdle.
Facet E (0.00°): Table – Floating table.
Best Gemstone Material for Fiordaliso
This design performs exceptionally well on materials with a Refractive Index (R.I.) of 1.620 and higher. It brings out rich brilliance in:
Natural Tourmaline (especially Lagoon or Pink)
Light to medium Ceylon Blue Sapphire
Lab-grown Blue Spinel
Aquamarine & Topaz
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