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

Contact us if you cannot find what you are looking for

Sign up for wholesale access

Home
Shop
Fair Trade Gems
About Us
Wholesale

Fall Collection

7 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

Concave Cut
3
Clear all

Gem Variety

Agate (0)
Andalusite (0)
Chrysoberyl (0)
Citrine (0)
Diopside (4)
Garnet (0)
Jade (0)
Jasper (0)
Moonstone (0)
Morganite (0)
Opal (1)
Peridot (0)
Quartz (0)
Ruby (0)
Sapphire (0)
Sphene (2)
Sunstone (0)
Tourmaline (0)
Zircon (0)

Variety Specifics

Australian Sapphire (0)
Cat's Eye Moonstone (0)
Color Change Sphene (0)
Fire Citrine® (0)
Golden Desert Jasper (0)
Grape Garnet® (0)
Green Quartz (0)
Idaho Garnet (0)
Imperial Diopside (0)
Imperial Jade (0)
Madeira Citrine (0)
Mesa Verde® Peridot (0)
Mexican Fire Opal (1)
Montana Sapphire (0)
Moss Agate (0)
Oregon Agate (0)
Oregon Opal (0)
Oregon Sunstone (0)
Padparadsha Sapphire (0)
Raja Garnet® (0)
Rhodolite Garnet (0)
Rubellite Tourmaline (0)
Smoky Citrine (0)
Smoky Quartz (0)
Tashmarine (4)

Shape

Baguette (0)
Bowtie (0)
Cushion (1)
Emerald Cut (0)
Freeform (0)
GeoCut (0)
Heart (0)
Hexagon (3)
Kite (0)
Marquise (0)
Oval (1)
Pear (0)
Princess Cut (0)
Round (1)
Triangle (0)
Trillion (1)
Wedge (0)

Shape Specifics

Barion (2)
Brilliant Cut (1)
Checkerboard Top (2)
Concave Cut (7)
Elongated (4)
Fancy Cut (7)
Fantasy (0)
Flute (0)
Portuguese Cut (2)
Rose Cut (1)
Square (1)
Tablet Cut (4)
Tapered (0)

Fair Trade Level

1 (0)
2 (17)
3 (7)
4 (0)
5 (1)

Origin

Afghanistan (0)
Africa (0)
Australia (0)
Brazil (0)
China (4)
India (0)
Kenya (0)
Liberia (0)
Mexico (1)
Nigeria (0)
Pakistan (2)
Russia (0)
Uruguay (0)
USA (0)

Location

Arizona (0)
Arkansas (0)
Idaho (0)
Montana (0)
Odisha (0)
Oregon (0)
Wisconsin (0)
Xinjiang (4)
Yakutsk (0)

Color

Bi-Color(0)
Blue(0)
Brown(0)
Color Change(0)
Denim(0)
Golden(2)
Green(4)
Grey(0)
Kaleidoscope(0)
Madeira(0)
Multi(0)
Orange(1)
Peach(0)
Pink(0)
Play of Color(0)
Purple(0)
Red(0)
White(0)
Yellow(2)

Treatment

Not Treated (7)
Treated (0)

Gem Cut

Cabochon (0)
Faceted (7)
Gem Carving (0)
Slices & Crystals (0)

Stone Size

1-3.75mm (0)
4-6mm (0)
6-8mm (0)
8-10mm (2)
10-12mm (1)
12-15mm (0)
15-20mm (3)
>20mm (1)
Free Size (0)

Total Gem Weight

0.0 to 0.25 carat (0)
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 carat (0)
1.0 to 1.50 carats (0)
1.50 to 2.0 carats (1)
2.0 to 3.0 carats (0)
3.0 to 5.0 carats (1)
5.0 to 10.0 carats (0)
10.0+ carats (5)

9x7mm Sphene Concave Oval

Regular Price: $417.60

Sale Price: $417.60
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.

25mm Rnd Orange Mexican Fire Opal

36.28ct Mexican Fire Opal Concave Round

Regular Price: $18,140.00

Sale Price: $18,140.00
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.

14.21ct Tashmarine Concave Hexagon

Regular Price: $12,060.00

Sale Price: $12,060.00
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.

23.73ct Tashmarine Concave Hexagon

Regular Price: $10,678.50

Sale Price: $10,678.50
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 Golden Sphene Concave Trillion

Regular Price: $1,488.00

Sale Price: $1,488.00
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.

14.21ct Tashmarine Concave Hexagon

Regular Price: $5,684.00

Sale Price: $5,684.00
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.

14.93ct Natural Radial Cushion Cut Tashmarine

14.93ct Tashmarine Concave Cushion

Regular Price: $7,465.00

Sale Price: $7,465.00
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 1-7 of 7.

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.