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Buy 16 - 18 mm Opal Gems

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16 - 18 mm Opal Gems Weight 16 - 18 mm Opal Gems Size 16 - 18 mm Opal Gems Clarity 16 - 18 mm Opal Gems Price 16 - 18 mm Opal Gems Origin
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4.63 ct Loose Oval Opal, 17.4 x 8.9 mm From Australia

Natural Opal, Qty: 1 pc | 4.63 carat weight Opal

4.63ct1 Piece
$ 102.69
17.4 x 8.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 4.63 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.4 x 8.9 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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8.75ct1 Piece
$ 194.08
16.6 x 12.4 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 8.75 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 16.6 x 12.4 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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7.75 ct Loose Oval Opal, 17.8 x 13.4 mm From Australia

Natural Opal, Qty: 1 pc | 7.75 carat weight Opal

7.75ct1 Piece
$ 171.90
17.8 x 13.4 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 7.75 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.8 x 13.4 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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4.41 ct Loose Oval Opal, 17.7 x 12.6 mm From Australia

Natural Opal, Qty: 1 pc | 4.41 carat weight Opal

4.41ct1 Piece
$ 97.81
17.7 x 12.6 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 4.41 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.7 x 12.6 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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6.50ct1 Piece
$ 164.06
17.3 x 12.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 6.50 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 17.3 x 12.9 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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2.99ct1 Piece
$ 75.47
16.7 x 8.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 2.99 ct Opal
Opal Shape: Cushion-Cut Opal
Opal Size: 16.7 x 8.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.17ct1 Piece
$ 80.01
16.5 x 8.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 3.17 ct Opal
Opal Shape: Pear Facet Opal
Opal Size: 16.5 x 8.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.93ct1 Piece
$ 99.19
16.4 x 11 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 3.93 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 16.4 x 11 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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5.16ct1 Piece
$ 130.24
16 x 11.3 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 5.16 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 16 x 11.3 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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5.13ct1 Piece
$ 129.48
16.5 x 11.4 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 5.13 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 16.5 x 11.4 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.51ct1 Piece
$ 88.59
16.1 x 9.2 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 3.51 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 16.1 x 9.2 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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5.37ct1 Piece
$ 241.65
16.5 x 11.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 5.37 ct Opal
Opal Shape: Pear Facet Opal
Opal Size: 16.5 x 11.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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8.07ct1 Piece
$ 203.77
17.2 x 12.2 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 8.07 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 17.2 x 12.2 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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2.64ct1 Piece
$ 66.66
16.9 x 7.2 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 2.64 ct Opal
Opal Shape: Pear Facet Opal
Opal Size: 16.9 x 7.2 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.35ct1 Piece
$ 60.75
16.1 x 5.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.35 ct Opal
Opal Shape: Marquise Facet Opal
Opal Size: 16.1 x 5.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.40ct1 Piece
$ 153.00
16.5 x 10.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 3.40 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 16.5 x 10.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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5.50ct1 Piece
$ 247.50
16.8 x 11.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 5.50 ct Opal
Opal Shape: Pear Facet Opal
Opal Size: 16.8 x 11.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.56ct1 Piece
$ 70.20
16.4 x 6.5 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.56 ct Opal
Opal Shape: Marquise Facet Opal
Opal Size: 16.4 x 6.5 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.50ct1 Piece
$ 157.50
16 x 10.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 3.50 ct Opal
Opal Shape: Pear Facet Opal
Opal Size: 16 x 10.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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2.38ct1 Piece
$ 66.64
16.1 x 8.3 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 2.38 ct Opal
Opal Shape: Fancy Cabochon Opal
Opal Size: 16.1 x 8.3 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Smoked
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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5.14ct1 Piece
$ 143.92
16.2 x 13.5 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 5.14 ct Opal
Opal Shape: Fancy Cabochon Opal
Opal Size: 16.2 x 13.5 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Smoked
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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9.49ct1 Piece
$ 237.25
17.5 x 11.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 9.49 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.5 x 11.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.93ct1 Piece
$ 98.25
17.3 x 10.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 3.93 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.3 x 10.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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6.18ct1 Piece
$ 154.50
16.9 x 12 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 6.18 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 16.9 x 12 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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11.81ct1 Piece
$ 25.39
17.9 x 13.7 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 11.81 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.9 x 13.7 mm Opal
Opal Color: Earth Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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10.14ct1 Piece
$ 21.80
17.7 x 13.4 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 10.14 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.7 x 13.4 mm Opal
Opal Color: Yellowish Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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13.36ct1 Piece
$ 28.72
16.7 x 12.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 13.36 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 16.7 x 12.9 mm Opal
Opal Color: Greenish Golden Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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14.17ct1 Piece
$ 30.47
17.2 x 13.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 14.17 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.2 x 13.9 mm Opal
Opal Color: Light Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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14.28ct1 Piece
$ 30.66
16.8 x 15.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 14.28 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 16.8 x 15.1 mm Opal
Opal Color: Yellowish Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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11.89ct1 Piece
$ 25.56
17 x 14.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 11.89 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17 x 14.1 mm Opal
Opal Color: Earth Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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12.46ct1 Piece
$ 26.79
18 x 13.7 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 12.46 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 18 x 13.7 mm Opal
Opal Color: Warm Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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13.83ct1 Piece
$ 29.73
18 x 13.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 13.83 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 18 x 13.8 mm Opal
Opal Color: Warm Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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8.14ct1 Piece
$ 17.50
16.6 x 14.3 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 8.14 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 16.6 x 14.3 mm Opal
Opal Color: Earth Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
View Details
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15.08ct1 Piece
$ 32.42
17.1 x 15.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 15.08 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.1 x 15.8 mm Opal
Opal Color: Warm Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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12.72ct1 Piece
$ 27.35
17.9 x 14.4 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 12.72 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.9 x 14.4 mm Opal
Opal Color: Forest Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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11.80ct1 Piece
$ 25.37
16.5 x 13.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 11.80 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 16.5 x 13.9 mm Opal
Opal Color: Earth Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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Thank you for trusting us with your purchase!

Overall Rating -> 7 star ratings

I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.

Posted By Bobk in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

No issues at all. It was great.

Posted By LJXK in May, 2023
Source: Bizrate

Overall Rating -> 9 star ratings

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023
Source: Bizrate

Overall Rating -> 9 star ratings

Well presented images, clear information, quick and easy check out.

Posted By Mr. Bezel in July, 2023
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Overall Rating -> 10 star ratings

Awesome

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Overall Rating -> 10 star ratings

Super easy to do business for great products.

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Overall Rating -> 10 star ratings

Very Good

Posted By Julian in July, 2023
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Overall Rating -> 9 star ratings

It went well

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Overall Rating -> 10 star ratings

I find the website user friendly.

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Overall Rating -> 10 star ratings

Easy to use.

Posted By Hope in March, 2024
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Overall Rating -> 10 star ratings

Easy to find the stones I was looking for. Always good quality stones

Posted By Erin in June, 2023
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Overall Rating -> 9 star ratings

My first purchase went well. I will purchase more gems in the future.

Posted By NoHalalAl in March, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Pleasant.

Posted By Mk in November, 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 -> 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
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