No: it's trigonal Faceting Diagram: Unique Hexagonal Cut by Marco Voltolini

Designed by renowned faceting artist Marco Voltolini, No: it's trigonal is a creative step-cut design featuring a distinctive hexagonal outline with an optical trigonal interior reflection.

Designed primarily for Quartz (R.I. = 1.540) and workably suited for gems with higher refractive indices, this 49-facet design utilizes 3-fold mirror-image symmetry to yield fascinating geometric contrast between the crown steps and pavilion angles.

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Design Specifications

Parameter	Specification Details
Design Name	No: it's trigonal
Author	Marco Voltolini
Target RI	R.I. = 1.540 (Quartz, Amethyst, Citrine, Aquamarine & Higher RI materials)
Facet Count	43 + 6 girdles = 49 total facets
Symmetry / Index	3-fold, mirror-image symmetry | 96 Index Gear
Proportions	L/W=1.155 | T/W=0.577 | U/W=0.500 P/W=0.537 | C/W=0.123
Volume Ratio	Vol./W³ = 0.304

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Step-by-Step Cutting Angles

1. Pavilion Cutting Sequence

Facet	Angle	96-Index Settings	Instruction / Meet Point
1	90.00°	08-24-40-56-72-88	Set stone size.
2	66.20°	08-24-40-56-72-88	Cut to equal depth.
3	47.18°	04-28-36-60-68-92	Cut the steps (meet girdle).
4	43.89°	03-29-35-61-67-93	Cut the steps (no meets).
5	41.30°	02-30-34-62-66-94	Cut the steps, no meets (final ctp).

2. Crown Cutting Sequence

Facet	Angle	96-Index Settings	Instruction / Meet Point
A	30.50°	08-24-40-56-72-88	Set girdle thickness.
B	26.30°	08-24-40-56-72-88	Cut the steps (no meets).
C	22.41°	08-24-40-56-72-88	Cut the steps (no meets).
D	0.00°	Table	Table.

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Suitable Gemstone Materials

Angles are calculated for Quartz but will work exceptionally well for materials with higher RIs:

• Quartz Family (RI 1.54): Amethyst, Citrine, Ametrine, and Smokey Quartz.
• Beryl & Tourmaline (RI 1.57 - 1.62): Aquamarine, Morganite, and Green Tourmaline.
• Higher RI Materials: Topaz, Sapphire, and Spinel.

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