search
  • Sign In
    Sign Up
  • English speaking customer support only

    1-800-464-1640

    International:

    +66-39601289

  • Change Language
  • USD
  • CART
FREE SHIPPING

Buy Marquise Shape 6x3 mm Gems

(27)
Marquise Shape 6x3 mm Gems Weight Marquise Shape 6x3 mm Gems Size Marquise Shape 6x3 mm Gems Clarity Marquise Shape 6x3 mm Gems Price Marquise Shape 6x3 mm Gems Origin
More
Marquise Shape 6x3 mm Gems Single
Marquise Shape 6x3 mm Gems Pairs
Marquise Shape 6x3 mm Gems Lots
Marquise Shape 6x3 mm Gems Faceted
Marquise Shape 6x3 mm Gems Cabochons
Sort By:
Clear All
Photos are of Actual Products for Sale
2.34ct (total)10 Pieces
$ 12.87
5.9 x 3 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 0.23 ct Amethyst
Amethyst Shape: Marquise Facet Amethyst
Amethyst Size: 5.9 x 3 mm Amethyst
Amethyst Color: Deep Purplish Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 10
Amethyst Certificate: GemSelect
Product Description:
View Details
Add to Cart
2.35ct (total)10 Pieces
$ 12.93
6 x 3.1 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 0.24 ct Amethyst
Amethyst Shape: Marquise Facet Amethyst
Amethyst Size: 6 x 3.1 mm Amethyst
Amethyst Color: Medium-Dark Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 10
Amethyst Certificate: GemSelect
Product Description:
View Details
Add to Cart
2.17ct (total)10 Pieces
$ 11.94
6.1 x 3 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.22 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 6.1 x 3 mm Citrine
Citrine Color: Gold Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 10
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart
Select pcs
$ 1.53
5.9 x 3 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 0.28 ct Topaz
Topaz Shape: Marquise Facet Topaz
Topaz Size: 5.9 x 3 mm Topaz
Topaz Color: Clear White Topaz
Topaz Clarity: VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Untreated
Topaz Quantity: 1
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
1.45ct (total)6 Pieces
$ 7.98
5.9 x 3.1 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.24 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 5.9 x 3.1 mm Citrine
Citrine Color: Orange-Gold Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 6
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart
2.43ct (total)10 Pieces
$ 16.04
6 x 3 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 0.24 ct Amethyst
Amethyst Shape: Marquise Facet Amethyst
Amethyst Size: 6 x 3 mm Amethyst
Amethyst Color: Medium Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 10
Amethyst Certificate: GemSelect
Product Description:
View Details
Add to Cart
1.54ct (total)6 Pieces
$ 8.47
5.9 x 3 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.26 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 5.9 x 3 mm Citrine
Citrine Color: Orange-Gold Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 6
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart
2.32ct (total)10 Pieces
$ 15.31
5.9 x 3 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 0.23 ct Amethyst
Amethyst Shape: Marquise Facet Amethyst
Amethyst Size: 5.9 x 3 mm Amethyst
Amethyst Color: Vivid Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 10
Amethyst Certificate: GemSelect
Product Description:
View Details
Add to Cart

0.27 ct Marquise Cut Iolite, 6 x 3 mm From Madagascar

Natural Iolite, Qty: 1 pc | 0.27 carat weight Iolite

0.27ct1 Piece
$ 10.80
6 x 3 mm
Item Description
Stone Type: Loose Iolite
Iolite Weight: 0.27 ct Iolite
Iolite Shape: Marquise Facet Iolite
Iolite Size: 6 x 3 mm Iolite
Iolite Color: Dark Bluish Purple Iolite
Iolite Clarity: VS Iolite
Iolite Origin: Madagascar Iolite
Iolite Treatment: Untreated
Iolite Quantity: 1
Iolite Certificate: GemSelect
Product Description:
View Details
Add to Cart

0.28 ct Marquise Cut Iolite, 5.8 x 2.9 mm From Brazil

Natural Iolite, Qty: 1 pc | 0.28 carat weight Iolite

0.28ct1 Piece
$ 11.20
5.8 x 2.9 mm
Item Description
Stone Type: Loose Iolite
Iolite Weight: 0.28 ct Iolite
Iolite Shape: Marquise Facet Iolite
Iolite Size: 5.8 x 2.9 mm Iolite
Iolite Color: Deep Purple Iolite
Iolite Clarity: VVS Iolite
Iolite Origin: Brazil Iolite
Iolite Treatment: Untreated
Iolite Quantity: 1
Iolite Certificate: GemSelect
Product Description:
View Details
Add to Cart
2.19ct (total)10 Pieces
$ 14.45
5.9 x 3 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 0.22 ct Amethyst
Amethyst Shape: Marquise Facet Amethyst
Amethyst Size: 5.9 x 3 mm Amethyst
Amethyst Color: Intense Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 10
Amethyst Certificate: GemSelect
Product Description:
View Details
Add to Cart

0.15 ct Marquise Cut Iolite, 6.2 x 3 mm From Madagascar

Natural Iolite, Qty: 1 pc | 0.15 carat weight Iolite

0.15ct1 Piece
$ 6.00
6.2 x 3 mm
Item Description
Stone Type: Loose Iolite
Iolite Weight: 0.15 ct Iolite
Iolite Shape: Marquise Facet Iolite
Iolite Size: 6.2 x 3 mm Iolite
Iolite Color: Silverish Blue Iolite
Iolite Clarity: VS Iolite
Iolite Origin: Madagascar Iolite
Iolite Treatment: Untreated
Iolite Quantity: 1
Iolite Certificate: GemSelect
Product Description:
View Details
Add to Cart
0.57ct (total)2 Pieces
$ 4.56
6.1 x 3 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 0.29 ct Topaz
Topaz Shape: Marquise Facet Topaz
Topaz Size: 6.1 x 3 mm Topaz
Topaz Color: London Blue Topaz
Topaz Clarity: VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
1.65ct (total)6 Pieces
$ 9.08
6 x 3 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.28 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 6 x 3 mm Citrine
Citrine Color: Orange-Gold Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 6
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart
1.33ct (total)6 Pieces
$ 7.32
6.2 x 3 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.22 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 6.2 x 3 mm Citrine
Citrine Color: Bright Gold Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 6
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart
2.42ct (total)10 Pieces
$ 13.31
6 x 3 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 0.24 ct Amethyst
Amethyst Shape: Marquise Facet Amethyst
Amethyst Size: 6 x 3 mm Amethyst
Amethyst Color: Intense Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 10
Amethyst Certificate: GemSelect
Product Description:
View Details
Add to Cart
Select pcs
$ 2.25
6.1 x 3.1 mm
Item Description
Stone Type: Loose Peridot
Peridot Weight: 0.26 ct Peridot
Peridot Shape: Marquise Facet Peridot
Peridot Size: 6.1 x 3.1 mm Peridot
Peridot Color: Lively Green Peridot
Peridot Clarity: VS Peridot
Peridot Origin: China Peridot
Peridot Treatment: Untreated
Peridot Quantity: 1
Peridot Certificate: GemSelect
Product Description:
View Details
Add to Cart

1.64 ct Loose Purple Sapphire, 6 x 3.1 mm Marquise Cut From Tanzania

Natural Sapphire, Qty: 6 pcs | 1.64 carat weight Sapphire

1.64ct (total)6 Pieces
$ 84.03
6 x 3.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.27 ct Sapphire
Sapphire Shape: Marquise Facet Sapphire
Sapphire Size: 6 x 3.1 mm Sapphire
Sapphire Color: Pinkish Purple Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 6
Sapphire Certificate: GemSelect
Product Description:
View Details
Add to Cart
2.13ct (total)10 Pieces
$ 11.72
6 x 2.9 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.21 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 6 x 2.9 mm Citrine
Citrine Color: Golden Orange Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 10
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart
1.66ct (total)6 Pieces
$ 9.13
6.1 x 3.1 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.28 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 6.1 x 3.1 mm Citrine
Citrine Color: Orange-Gold Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 6
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart
1.33ct (total)6 Pieces
$ 6.65
6.1 x 3.1 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.22 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 6.1 x 3.1 mm Citrine
Citrine Color: Deep Golden Orange Citrine
Citrine Clarity: VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 6
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart
2.38ct (total)10 Pieces
$ 13.09
6.1 x 3.1 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 0.24 ct Amethyst
Amethyst Shape: Marquise Facet Amethyst
Amethyst Size: 6.1 x 3.1 mm Amethyst
Amethyst Color: Deep Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 10
Amethyst Certificate: GemSelect
Product Description:
View Details
Add to Cart

0.24 ct Marquise Cut Iolite, 5.8 x 3 mm From Brazil

Natural Iolite, Qty: 1 pc | 0.24 carat weight Iolite

0.24ct1 Piece
$ 9.60
5.8 x 3 mm
Item Description
Stone Type: Loose Iolite
Iolite Weight: 0.24 ct Iolite
Iolite Shape: Marquise Facet Iolite
Iolite Size: 5.8 x 3 mm Iolite
Iolite Color: Dark Bluish Purple Iolite
Iolite Clarity: VVS-VS Iolite
Iolite Origin: Brazil Iolite
Iolite Treatment: Untreated
Iolite Quantity: 1
Iolite Certificate: GemSelect
Product Description:
View Details
Add to Cart

0.14 ct Marquise Cut Iolite, 6.1 x 2.9 mm From Madagascar

Natural Iolite, Qty: 1 pc | 0.14 carat weight Iolite

0.14ct1 Piece
$ 5.60
6.1 x 2.9 mm
Item Description
Stone Type: Loose Iolite
Iolite Weight: 0.14 ct Iolite
Iolite Shape: Marquise Facet Iolite
Iolite Size: 6.1 x 2.9 mm Iolite
Iolite Color: Deep Purple Iolite
Iolite Clarity: VVS Iolite
Iolite Origin: Madagascar Iolite
Iolite Treatment: Untreated
Iolite Quantity: 1
Iolite Certificate: GemSelect
Product Description:
View Details
Add to Cart
1.72ct (total)6 Pieces
$ 9.46
6.2 x 3.1 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.29 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 6.2 x 3.1 mm Citrine
Citrine Color: Orange-Gold Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 6
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart

1.75 ct Loose Purple Sapphire, 6 x 3.1 mm Marquise Cut From Tanzania

Natural Sapphire, Qty: 6 pcs | 1.75 carat weight Sapphire

1.75ct (total)6 Pieces
$ 89.67
6 x 3.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.29 ct Sapphire
Sapphire Shape: Marquise Facet Sapphire
Sapphire Size: 6 x 3.1 mm Sapphire
Sapphire Color: Pinkish Purple Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 6
Sapphire Certificate: GemSelect
Product Description:
View Details
Add to Cart
1.16ct (total)4 Pieces
$ 12.67
6 x 3.1 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 0.29 ct Citrine
Citrine Shape: Marquise Facet Citrine
Citrine Size: 6 x 3.1 mm Citrine
Citrine Color: Dark Orange-Gold Citrine
Citrine Clarity: VVS-VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 4
Citrine Certificate: GemSelect
Product Description:
View Details
Add to Cart

Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated marquise shaped facet cut gems, gemstone carvings and cabochons available in 6 mm x 3 mm sizes. For the largest selection of colored gemstones, Shop GemSelect Online.

As a general guideline, when it comes to calibrated gems, they are not usually expected to be cut to exact measurements and specifications. But rather, they're cut with slight variance in size, though the close approximatation in size is not clearly defined, there are general guidelines for what is considered acceptable. Obviously larger and heavy carat weight stones allow more room in size for variance, while smaller stones may leave little to none. This means a large 30mm calibrated gemstone, could actually be closer to 31 millimeters. For this reason, we recommend to always view the exact size in addition to the calibrated size details. The exact size will inform you of the variance you can expect. Some setting styles are more flexible with variance, such as prong settings, while other styles of mountings may need almost an exact size to the fraction of millimeter.

For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Fine. All emails answered. Excellent service. Nice discount added for orders. Briefly, a very good experience.

Posted By C.J. in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I find the website user friendly.

Posted By Becky in August, 2023
Source: Bizrate

Overall Rating -> 9 star ratings

I am of the opinion that the company gem select cares about the product beautiful gems it sells and the cost of the gem I purchased was small i was treated as if it cost a lot of money and product was described in detail and i felt good about the little stones i had ordered.

Posted By Sparkle in March, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I enjoyed browsing though different varieties of rubies. I felt that the experience was simple and easy to navigate!

Posted By Daws in July, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection

Posted By GHS40 in December, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

The website is easy to navigate and has a great selection. I am an amateur silver smith casting jewelry with stones

Posted By Jrplunk in April, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Love gemselect

Posted By Joshua Howard in March, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Awesome

Posted By Mic in May, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect has the Best gems. Clear photos and detailed description helps me make the best choice. I have Never been disappointed by thier quality items.

Posted By Rock Hound in July, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Selection and purchasing online was very easy

Posted By Aggy in January, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

Posted By Terry in June, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Had a problem ordering first time. Someone from Gem Select reached out to me and cleared problem and I made purchase.

Posted By Myrtle in February, 2024
Source: Bizrate
STAY IN TOUCH | NEWSLETTER
*You're signing up to receive GemSelect promotional email.
Partners and Trust Payment options

Switch to Mobile Version

Copyright © 2005-2024 GemSelect.com all rights reserved.

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

261

Continue Shopping
Checkout
Continue Shopping
Checkout