Gemstone Necklaces

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$299.99

London Blue and Swiss Blue Topaz White Gold Butterfly Necklace

Approximately 7 x 3.5 mm Marquise London Blue Topaz
Approximately 5 x 3 mm Swiss Blue Topaz
18" Necklace

Rated 4.4 out of 5 stars based on 90 reviews.

(90)

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$249.99

Gemstone 14kt White Gold Necklace

Approximately 7.8 x 7.8 mm Pendant
18" Necklace

Rated 4.7 out of 5 stars based on 122 reviews.

(122)

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$899.99

Blue Sapphire and Diamond 14kt White Gold Necklace

Oval Approximately 4.5 x 3.5 mm, 2.8 mm Blue Sapphire
Princess Cut 2.8mm Blue Sapphire
0.10 ctw, VS2 Clarity, I Color Diamonds
18" Necklace

Rated 4.6 out of 5 stars based on 90 reviews.

(90)

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$429.99

Australian Opal and Diamond 14kt Yellow Gold Pendant

Round Cut Approximately 7 mm Opal
0.11 ctw VS2, I Diamonds

Rated 4.2 out of 5 stars based on 85 reviews.

(85)

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$499.99

London Blue Topaz and Diamond 14kt White Gold Necklace

Round Cut Approximately 7.8 mm Topaz
0.13 ctw, VS2 Clarity, I Color Diamonds
Adjustable 18" Necklace

Rated 4.8 out of 5 stars based on 77 reviews.

(77)

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$899.99

Lab Created Emerald and Diamond 14kt Yellow Gold Pendant

Princess Cut Approximately 3 x 3 mm Lab Emerald
0.57 ctw VS2, I Diamonds
18" Necklace

Rated 4.9 out of 5 stars based on 11 reviews.

(11)

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$749.99

Lab Created Emerald and Diamond 14kt White Gold Pendant

Pear Approximately 12 x 8 mm Lab Created Emerald
0.45 ctw, VS2 Clarity, I Color Diamonds
17" Necklace

Rated 4.8 out of 5 stars based on 176 reviews.

(176)

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$319.99

Blue Topaz and Diamond 14kt White Gold Heart Necklace

Round Approximately 5 mm Topaz
0.06 ctw, VS2 Clarity, I Color Diamonds
17" Necklace

Rated 4.2 out of 5 stars based on 184 reviews.

(184)

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$329.99

Morganite and Diamond 14kt White Gold Heart Necklace

Round Approximately 5 mm Morganite
0.06 ctw, VS2 Clarity, I Color Diamonds
18" Necklace

Rated 4.3 out of 5 stars based on 134 reviews.

(134)

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$399.99

Blue Lapis and 14kt Yellow Gold Round Necklace

Round Cut Approximately 10 mm, 4 mm Blue Lapis
18" Necklace

Rated 4.7 out of 5 stars based on 33 reviews.

(33)

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$549.99

Morganite and Diamond 14kt Rose Gold Necklace

Pear Shape Approximately 10 x 7 mm Morganite
0.06 ctw, VS2 Clarity, I Color Diamonds
18" Adjustable Necklace

Rated 4.5 out of 5 stars based on 20 reviews.

(20)

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$319.99

Garnet 14kt Yellow Gold Necklace

Round Approximately 6 mm Garnet
18" Necklace

Rated 4.6 out of 5 stars based on 81 reviews.

(81)

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$499.97

Garnet 14kt Yellow Gold Necklace

Clover Approximately 8 mm Garnet
18" Necklace

Rated 4.3 out of 5 stars based on 52 reviews.

(52)

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$319.99

Amethyst 14kt White Gold Necklace

Round Approximately 6 mm Amethyst
18" Necklace

Rated 4.6 out of 5 stars based on 40 reviews.

(40)

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$499.99

Lab Created Emerald and Diamond 14kt White Gold Pendant

Round Approximately 7.8 mm Lab Created Emerald
0.14 ctw, VS2 Clarity, I Color Diamonds
18" Necklace

Rated 4.8 out of 5 stars based on 16 reviews.

(16)

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$399.97

Rhodolite Garnet and Diamond 14kt Yellow Gold Necklace

Oval Approximately 8 x 6 mm Garnet
0.13 ctw, VS2 Clarity, I Color Diamonds
18" Necklace

Rated 4.5 out of 5 stars based on 126 reviews.

(126)

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$1,899.99

Blue Sapphire and Diamond 14kt White Gold Necklace

Oval Cut Approximately 7 x 5 mm Blue Sapphire
0.55 ctw, VS2 Clarity, I Color Diamonds
18" Necklace

Rated 4.6 out of 5 stars based on 32 reviews.

(32)

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$599.99

Dyed Green Jade & Diamond 14kt Yellow Gold Necklace

Oval Cut Approximately 25 x 8 mm Dyed Green Jade
0.18 ctw, VS2 Clarity, I Color Diamonds

Rated 4.5 out of 5 stars based on 6 reviews.

(6)

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$3,999.99

Tanzanite and Diamond 14kt White Gold Necklace

Emerald Approximately 12 x 10 mm Tanzanite
1.09 ctw, VS2 Clarity, I Color Diamonds
18" Necklace

Rated 5 out of 5 stars based on 9 reviews.

(9)

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$4,599.99

Tanzanite and Diamond 18kt White Gold Pendant Necklace

Emerald Cut Approximately 12 x 7 mm Tanzanite
0.91 ctw, VS2 Clarity, I Color Diamonds
18" Necklace

Rated 4 out of 5 stars based on 1 reviews.

(1)

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$649.99

Lapis and Chalcedony 14kt Yellow Gold Necklace

Fancy Approximately 9.5 x 8.5 x 2.5 mm Lapis
Fancy Approximately 7.5 x 6.5 x 2 mm Chalcedony
17" Necklace

Rated 4.7 out of 5 stars based on 31 reviews.

(31)

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$399.99

Australian Opal 14kt Yellow Gold Necklace

Pear Shape Approximately 9 x 7 mm Opal
Adjustable Chain 16", 18"

Rated 4.2 out of 5 stars based on 146 reviews.

(146)

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$1,099.99

Amethyst and Diamond 14kt White Gold Pendant Necklace

Oval Approximately 11.8 x 8.8 mm Amethyst
0.33 ctw, VS2 Clarity, I Color Diamond
18" Necklace

Rated 5 out of 5 stars based on 3 reviews.

(3)

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$679.99

Nephrite Green Jade and Diamond 14kt Yellow Gold Pendant

Round Approximately 18 x 18 mm Nephrite Green Jade
0.18 ctw, VS2 Clarity, I Color Diamonds
18" Necklace

Rated 4.3 out of 5 stars based on 51 reviews.

(51)

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Pearl Necklaces

Diamond Necklaces

Gemstone Bracelets

Gemstone Rings

Visit Costco.com for spectacular gemstone necklaces, and discover a rainbow of color! Our impressive inventory offers a large selection of gemstones, including fiery rubies, aquamarine, crimson garnets, lapis, and sapphires in an array of hues. We make shopping online easy, by letting you filter by desired stone, size, cut, or composition. Imagine draping your neck with a dramatic opal teardrop accented with lustrous diamonds, or a blush-colored morganite set in warm rose gold. If you’re looking for coordinating pieces, we offer an assortment of beautifulgemstone rings andearrings. Start shopping now, and see what we have in store for you!

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Gemstone Necklaces

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Pearl Necklaces

Diamond Necklaces

Gemstone Bracelets

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