Skip to content

Search

Home
Shop
Fair Trade Gems
About Us
Wholesale
Log In/Create Account

Only a small portion of our inventory is currently online

Will tariffs impact my order? Read our latest update.

Sign up for wholesale access

Home
Shop
Fair Trade Gems
About Us
Wholesale

May Birthstones

Read more about May alternative birthstone varieties and their stories in our most recent Blog Post.

2 products

Sort by

Featured
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old

Cushion
3.0 to 5.0 carats
Clear all

Gem Variety

Agate (0)
Chalcedony (2)
Emerald (0)

Variety Specifics

Blue Chalcedony (2)
Golden Sage Chalcedony (0)
Lemon Chryoprase (0)
Montana Agate (0)
Oregon Agate (0)
Purple Sage Chalcedony® (0)
Snowdrift Agate (0)

Shape

Briolette (0)
Cushion (2)
Emerald Cut (0)
Freeform (0)
Hexagon (1)
Kite (0)
Oval (9)
Rondelle (0)
Round (9)
Sugarloaf (1)
Teardrop (1)
Triangle (0)
Trillion (3)

Shape Specifics

Checkerboard Top (1)
Rose Cut (1)
Smooth (0)
Square (0)
Tablet Cut (0)

Fair Trade Level

1 (0)
3 (2)
5 (0)

Origin

Africa (0)
Colombia (0)
Mexico (2)
USA (0)

Location

Montana (0)
Nevada (0)
Oregon (0)

Color

Black(0)
Blue(2)
Brown(0)
Golden(0)
Green(0)
Multi(0)
Orange(0)
Purple(0)
Red(0)
White(0)
Yellow(0)

Treatment

Not Treated (2)
Treated (0)

Gem Cut

Bead (0)
Cabochon (0)
Faceted (2)
Sculpture Carving (0)

Stone Size

4-6mm (0)
6-8mm (0)
8-10mm (2)
10-12mm (2)
12-15mm (1)
15-20mm (0)
>20mm (0)
Free Size (0)

Total Gem Weight

0.25 to 0.50 carat (0)
0.50 to 0.75 carat (0)
0.75 to 1.0 carat (0)
1.0 to 1.50 carats (0)
1.50 to 2.0 carats (4)
2.0 to 3.0 carats (4)
3.0 to 5.0 carats (2)
5.0 to 10.0 carats (2)
10.0+ carats (0)

10x8 to 14x10mm Cushion Rose Cut Gem Blue Mexican Chalcedony

10x8 to 12x10mm Gem Blue Mexican Chalcedony Rose Cut Cushions

Regular Price: from $120.00

Sale Price: from $120.00
Regular Price

Unit Price: per

Added to Cart View Cart or Continue Shopping.

Cart Error Some items became unavailable. Update the quantity and try again.

10mm Fancy Cushion Cut Gem Blue Mexican Chalcedony

10mm Gem Blue Mexican Chalcedony Checkerboard Cushions

Regular Price: $138.00

Sale Price: $138.00
Regular Price

Unit Price: per

Added to Cart View Cart or Continue Shopping.

Cart Error Some items became unavailable. Update the quantity and try again.

Showing items 1-2 of 2.

1-800-888-2444

Company

About Us
Blog
Contact

Customer Care

Shipping
Returns
Wholesale Accounts
Terms & Conditions
Privacy

Connect

Stay in the know!

Enter Email Address

Copyright © 2025 Columbia Gem House.

Currency

Currency

Search

Join our mailing list

For updates on products and new releases

Enter Email Address

*By completing this form you're signing up to receive our emails and can unsubscribe at any time.