A Dazzling Guide to Trillion Cut Moissanite

A Dazzling Guide to Trillion Cut Moissanite

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Moissanite, with its brilliant sparkle and cost-effective price tag, has been a favorite alternative to diamonds for many years. Among the various cuts available, the trillion cut moissanite stands out due to its unique shape and dazzling appearance. In this guide, we will delve deep into the world of trillion cut moissanite, exploring its origins, characteristics, benefits, and how to select the perfect piece.

What is Trillion Cut Moissanite?

Trillion cut, also known as trilliant or triangular cut, refers to a gemstone shape that is triangular, often with curved sides and pointed corners. Moissanite is a gemstone that is a popular alternative to diamonds due to its brilliance, durability, and affordability.

When you combine the two – a trillion cut and moissanite – you get a trillion cut moissanite. This shape can be used for center stones in rings or as accent stones on either side of a larger center stone.

Trillion-cut moissanite would have the same optical properties as any other cut of moissanite – it would be very brilliant, almost as hard as a diamond (with a Mohs hardness of 9.25, diamond being a 10), and more refractive, giving it more fire (rainbow colors) than a diamond.

It’s worth noting that while the trillion cut is unique and can be eye-catching, it might not showcase the full brilliance of moissanite as effectively as some other cuts (like the round brilliant). However, its distinct shape can add a unique touch to jewelry designs.

History of Trillion Cut

Compared to many other diamond cuts, the trillion cut diamond has a shorter history. It started with the Asscher brothers in Amsterdam during the 18th century. These brothers were the same people behind the famous asscher cut diamond. They came up with a triangular shape, which inspired many other similar diamond cuts. By the mid-1960s, a man named Leon Finker introduced the trillion cut.

Leon Finker tried to get the name “trillion” officially recognized for this cut, but he couldn’t. However, the name became popular anyway. Nowadays, when people talk about triangular diamonds, they often call them trillion cuts. These diamonds have three sides that are mostly the same length and a flat top. There are two main styles of this cut. Smaller accent stones usually have 31 facets and straight edges. On the other hand, bigger diamonds meant to be the main stone on a ring or necklace might have 50 facets and slightly curved edges.

Exploring the Trillion-Cut Moissanite: The Pros & Cons

Every moissanite cut offers a distinct blend of advantages and drawbacks. However, the trillion-cut moissanite, with its intriguing geometry, brings forth a set of characteristics quite different from its counterparts:


  • Trillion-cut moissanites often give an illusion of being larger than other cuts with the same carat weight, such as the princess cut or round brilliant.
  • As an uncommon cut, trillion presents a unique flair, making it an exclusive choice for a centerpiece.
  • The cut radiates a mesmerizing play of light, adding unparalleled fire and brilliance which can conveniently mask any inclusions or color variations.
  • Its distinct shape ensures that it takes the spotlight, especially when chosen as the primary gem in engagement rings.


  • Due to its three angular points, the trillion-cut is more susceptible to chips and breaks. It’s crucial to safeguard these ends, possibly with prongs or a bezel setting.
  • Given its shallow depth, trillion-cut moissanites can accumulate grime quickly, necessitating more frequent clean-ups to maintain their sparkle.
  • Their rarity means hunting for high-quality trillion-cut moissanites can be a tad more time-consuming and challenging.
  • Variability in shape and proportion from one gem to another makes it advisable to view these moissanites in person before making a purchase.

Guidelines for Choosing a Trillion-Cut Moissanite

Selecting a trillion-cut moissanite largely depends on personal taste. When picking a color grade, it’s essential first to think about the kind of setting you’re aiming for.

Top-quality trillion-cut moissanites have an impressive shape. While many attribute the charm of this shape purely to its symmetry, it’s not the only factor to consider. Ideally, trillions should be equilateral triangles, meaning all three angles and sides should be of equal length.

Additionally, the sides or edges of the trillion-cut moissanite can either be straight or have a slight curve. Straight edges give the stone a defined geometric appearance.

Lastly, many trillion-cut moissanites come with sharp, pointed corners, but some designs have slightly rounded corners. These pointed corners are more at risk of damage. Choosing moissanites with rounded corners can be a safer choice, even if it alters the traditional shape slightly.


Trillion cut moissanite is a stunning and unique choice for those looking to add a touch of elegance to their jewelry collection. Its unparalleled brilliance, coupled with its affordability, makes it an ideal alternative to traditional diamonds. When purchasing, always ensure you’re buying from reputable jewelers and consider all the factors mentioned in this guide.

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Ring Size Guide

ring size guide
ring size guide

This is a chart that will be extremely helpful for you to determine the ring size that you need. You can either make use of a tape or a small piece of string to measure the area that will be occupied by the ring. When it becomes a complete circle, make a mark on such string. This will be helpful for you to compare with the chart that is mentioned below.

Inside Dia. Inside Circ. Size
14.1 44.2 3 F 44 4.25
14.5 45.5 3.5 G 45.5 5.5
14.9 46.8 4 H 47 6.75
15.3 48 4.5 I 48 8
15.7 49.3 5 J-1/2 50 9.25
16.1 50.6 5.5 K-1/2 51 10.5
16.5 51.9 6 L-1/2 52 11.75
16.9 53.1 6.5 M-1/2 53 13.25
17.3 54.4 7 N-1/2 54 14.5
17.7 55.7 7.5 O-1/2 56 15.75
18.1 57 8 P-1/2 57 17
18.5 58.3 8.5 Q-1/2 58 18.25
19 59.5 9 R-1/2 60 19.5
19.4 60.8 9.5 S-1/2 61 20.75
19.8 62.1 10 T-1/2 62 22
20.2 63.4 10.5 U-1/2 63 23.25
20.6 64.6 11 V-1/2 64 24.75
21 65.9 11.5 W-1/2 66 26
21.4 67.2 12 X-1/2 67 27.25
21.8 68.5 12.5 Z 68 28.5
22.2 69.7 13 Z+1 70 29.75
22.6 71 13.5 Z+1.5 71 31
23 72.3 14 Z+2 72 32.25
23.4 73.5 14.5 Z+2.5 73.5 33.5
23.8 74.8 15 Z+3 75 34.75

Other Tips

1) Measure your finger in warm temperatures at the end of the day.

2) If your knuckle is a lot larger than the base of your finger, measure both the base of your finger and your knuckle and select a size between the two.

3) When considering a wide band, move up a size from your measurement, for comfort’s sake.