X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

Natural Trillion Amethyst Gemstones

Browse natural trillion amethyst gemstones in precise triangle cuts, perfect for modern and custom jewelry designs.

Trillion Amethyst Weight
Trillion Amethyst Size
Trillion Amethyst Clarity
Trillion Amethyst Price

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black
Blue
Brown
Gray
Green
Multicolor
Orange
Pink
Purple
Red
Turquoise
Violet Trillion Amethyst
White
Yellow
Single
Pairs
Lots
Faceted
Cabochons
X
Clear All

2.78ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 23.35

View Details

3.16ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 29.20

View Details

2.19ct Violet Amethyst, Trillion, VVS-VS

9 x 9 mm (calibrated)

$ 20.23

View Details

2.88ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 24.19

View Details

2.81ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 18.55

View Details

2.98ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 25.03

View Details

1.64ct Violet Amethyst, Trillion, VS

8.4 x 8.2 mm

$ 13.06

View Details

2.92ctw Violet Amethyst, Trillion, VS

6.9 x 6.2 mm

$ 23.12

View Details

2.91ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 26.89

View Details

2.85ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 23.94

View Details

2.96ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 26.74

View Details

3.12ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 28.82

View Details

2.75ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 23.10

View Details

5.45ctw Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 52.32

View Details

5.77ctw Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 48.47

View Details

2.51ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 22.67

View Details

1.66ct Violet Amethyst, Trillion, VS

8 x 8 mm (calibrated)

$ 13.21

View Details

2.65ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 23.93

View Details

5.83ctw Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 48.97

View Details

2.77ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 25.02

View Details

2.56ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 21.50

View Details

3.09ct Violet Amethyst, Trillion, VVS-VS

10 x 10 mm (calibrated)

$ 27.90

View Details

3.07ct Violet Amethyst, Trillion, VS

10 x 10 mm (calibrated)

$ 20.27

View Details

3.06ct Violet Amethyst, Trillion, VVS

10 x 10 mm (calibrated)

$ 25.70

View Details

Why Buy Trillion Amethyst from GemSelect?

Precision-Cut Trillion Amethyst

Our trillion amethyst gemstones are expertly cut into sharp, symmetrical triangle shapes that maximize brilliance and color. These natural stones display rich purple hues and clean facet alignment for outstanding sparkle.

Buy Trillion Amethyst Online

At GemSelect, you can shop trillion cut amethyst gemstones with detailed photos, exact dimensions, and full specifications. Every stone is in stock and ready for secure worldwide shipping.

Trillion Cut Amethyst Gemstones for Jewelry

Triangle Amethyst for Modern Jewelry

The trillion shape is a popular choice for contemporary rings, pendants, and earrings. Its three-sided design creates a bold geometric look while maintaining excellent light performance.

Side Stones & Accent Settings

Trillion amethyst gemstones are often used as side stones in engagement rings or as matching pairs for earrings. Their angular shape complements round, oval, and emerald center stones beautifully.

Natural & Treated Amethyst

All trillion amethyst stones are natural. Any common treatments, such as heat treatment to enhance color, are fully disclosed for complete transparency.

Calibrated Trillion Sizes

We offer both calibrated and free-size trillion cut amethyst, making them suitable for standard jewelry mountings as well as custom-made settings.

February Birthstone

Amethyst is the February birthstone and is associated with clarity and balance. A trillion amethyst makes a unique and meaningful gift for February birthdays.

Learn more about gemstone properties, care, and history on our Amethyst Information Page.

FAQs

What is a trillion cut amethyst?

A trillion cut amethyst is a gemstone shaped into a triangular form with three equal sides. The cut enhances brilliance and offers a modern geometric appearance.

Are your trillion amethyst gemstones natural?

Yes, all our amethyst gemstones are natural. Any treatments, such as heat enhancement, are clearly disclosed in the product details.

Is trillion amethyst suitable for rings?

Yes, with a Mohs hardness of 7, amethyst is durable enough for rings when properly set. Protective prong or bezel settings are recommended for the pointed corners.

Do you offer matching trillion amethyst pairs?

Yes, matching pairs are available and are ideal for earrings or balanced jewelry designs.

What sizes are available in trillion amethyst?

We stock a wide range of sizes, including calibrated measurements suitable for standard mountings and larger stones for statement pieces.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate
Enlarged Gemstone Image