90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
Home Calibrated Gemstones Trillion Shape 13x13 mm Gems

Calibrated 13 x 13 mm Trillion Shape Gemstones | GemSelect

Trillion Shape 13x13 mm Gems Weight
Trillion Shape 13x13 mm Gems Size
Trillion Shape 13x13 mm Gems Clarity
Trillion Shape 13x13 mm Gems Price

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black
Blue
Brown
Golden
Gray
Green
Multicolor Trillion Shape 13x13 mm Gems
Orange
Pink Trillion Shape 13x13 mm Gems
Purple
Red
Turquoise
Violet
White
Yellow Trillion Shape 13x13 mm Gems
Single
Pairs
Lots
Faceted
Cabochons
Clear All

6.21ct Yellow Quartz, Trillion, Transparent

13 x 13 mm (calibrated)

$ 17.01

View Gem

7.43ct Pink Morganite, Trillion, Translucent

13 x 13 mm (calibrated)

$ 81.41

View Gem

5.71ct Multicolor Pietersite, Trillion, Opaque

13 x 13 mm (calibrated)

$ 18.96

View Gem

5.37ct Pink Morganite, Trillion, Transparent

13 x 13 mm (calibrated)

$ 58.83

View Gem

5.39ct Pink Morganite, Trillion, Transparent

13 x 13 mm (calibrated)

$ 53.68

View Gem

6.45ct Yellow Quartz, Trillion, Transparent

13 x 13 mm (calibrated)

$ 17.31

View Gem

6.30ct Pink Morganite, Trillion, Translucent

13 x 13 mm (calibrated)

$ 69.02

View Gem

4.85ct Multicolor Black Opal, Trillion, Opaque

13 x 13 mm (calibrated)

$ 144.92

View Gem

6.36ct Multicolor Rainbow Pyrite, Trillion, Opaque

13 x 13 mm (calibrated)

$ 22.36

View Gem

5.51ct Yellow Quartz, Trillion, Transparent

13 x 13 mm (calibrated)

$ 14.79

View Gem

5.65ct Yellow Quartz, Trillion, Transparent

13 x 13 mm (calibrated)

$ 18.58

View Gem

6.66ct Pink Morganite, Trillion, Transparent

13 x 13 mm (calibrated)

$ 72.97

View Gem

7.16ctw Multicolor Pietersite, Trillion, Opaque

13 x 13 mm (calibrated)

$ 17.54

View Gem

7.14ct Pink Morganite, Trillion, Transparent

13 x 13 mm (calibrated)

$ 78.23

View Gem

6.11ct Yellow Quartz, Trillion, Transparent

13 x 13 mm (calibrated)

$ 20.08

View Gem

3.74ct Multicolor Black Opal, Trillion, Opaque

14 x 14 mm (calibrated)

$ 111.75

View Gem

5.91ct Yellow Quartz, Trillion, VVS-VS

13 x 13 mm (calibrated)

$ 15.94

View Gem

Why Buy Trillion Shape 13x13 Mm Gems from GemSelect?

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

My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.

Posted By RJ in January, 2026
Source: Bizrate

Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and functional

Posted By Dessa in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate
Enlarged Gemstone Image