X
Gemstone Search
90,000+ Happy Customers
20+ Years In Business
Call Us Mon–Fri 8am–5pm

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

Calibrated Marquise Cut Gemstones in Size 12x6 mm

Marquise Shape 12x6 mm Gems Weight
Marquise Shape 12x6 mm Gems Size
Marquise Shape 12x6 mm Gems Clarity
Marquise Shape 12x6 mm Gems Price
Marquise Shape 12x6 mm Gems Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black
Blue Marquise Shape 12x6 mm Gems
Brown Marquise Shape 12x6 mm Gems
Golden
Gray
Green
Multicolor Marquise Shape 12x6 mm Gems
Orange
Pink
Purple
Red Marquise Shape 12x6 mm Gems
Turquoise
Violet Marquise Shape 12x6 mm Gems
White Marquise Shape 12x6 mm Gems
Yellow Marquise Shape 12x6 mm Gems
Single
Pairs
Lots
Faceted
Cabochons
Clear All

2.17ct Brown Tiger'S Eye, Marquise, Opaque

12 x 6 mm (calibrated)

$ 2.12

View Gem

1.96ct Brown Tiger'S Eye, Marquise, Opaque

12 x 6 mm (calibrated)

$ 2.54

View Gem

8.02ctw Red Pyrope Garnet, Marquise, VVS-VS

12 x 6 mm (calibrated)

$ 79.34

View Gem

2.11ct Red Almandine Garnet, Marquise, VVS

12 x 6 mm (calibrated)

$ 78.81

View Gem

3.50ctw Blue Topaz, Marquise, VVS-VS

12.2 x 6.2 mm

$ 19.17

View Gem

1.70ct Violet Amethyst, Marquise, VS-SI

12.1 x 6 mm

$ 13.04

View Gem

4.61ctw Red Pyrope Garnet, Marquise, VVS-VS

12 x 6.1 mm

$ 40.40

View Gem

3.95ctw Red Pyrope Garnet, Marquise, VVS-VS

11.9 x 6 mm

$ 69.24

View Gem

4.41ctw Red Pyrope Garnet, Marquise, VVS-VS

12 x 6 mm (calibrated)

$ 33.82

View Gem

4.30ctw Red Pyrope Garnet, Marquise, VVS

12.1 x 6 mm

$ 19.63

View Gem

1.92ct Violet Amethyst, Marquise, VS

12 x 5.9 mm

$ 14.72

View Gem

2.30ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 5.09

View Gem

2.37ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 5.24

View Gem

1.59ct Violet Amethyst, Marquise, VS

12 x 6.1 mm

$ 12.19

View Gem

2.55ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 5.64

View Gem

2.36ct Blue Topaz, Marquise, VVS-VS

12.1 x 6.1 mm

$ 12.93

View Gem

2.54ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 5.62

View Gem

2.07ct Red Almandine Garnet, Marquise, VVS

12 x 6 mm (calibrated)

$ 77.31

View Gem

2.07ct Violet Amethyst, Marquise, VS

12.1 x 5.9 mm

$ 15.88

View Gem

3.54ctw Red Pyrope Garnet, Marquise, VVS-VS

12 x 6.1 mm

$ 35.03

View Gem

2.39ct Multicolor Labradorite, Marquise, Translucent

12 x 6 mm (calibrated)

$ 5.29

View Gem

1.97ct Red Almandine Garnet, Marquise, VVS

12 x 6 mm (calibrated)

$ 73.58

View Gem

2.22ct Blue Topaz, Marquise, VVS-VS

11.9 x 6 mm

$ 12.16

View Gem

2.06ct Red Almandine Garnet, Marquise, VVS-VS

12 x 6 mm (calibrated)

$ 76.94

View Gem

Why Buy Marquise Shape 12x6 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

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate
Enlarged Gemstone Image