Colliers Onyx

Gemondo's Art Deco collection brings you wonderfully embellished Great Gatsby-esque designs inspired by the roaring 1920's. This stunning art deco inspired necklace crafted from sterling silver features a large pear shaped black onyx cabochon offset with a round cut faceted black spinel gemstone.

This necklace comes on a matching 45cm/ 18inch sterling silver chain which fastens with a sprung ring clasp

Onyx Information:

• Number of Stones: 1
• Stone Shape: Pear
• Stone Size: 20x15mm
• Carat Weight: 12.25ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Brazil

Spinel Information:

• Number of Stones: 1
• Stone Shape: Round
• Stone Size: 2.00mm
• Carat Weight: 0.04ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Thailand

A beautifully designed art deco style pendant with black onyx and marcasite gemstones.

This pendant comes with a matching 45cm / 18in sterling silver chain.

Black Onyx Information:

• Number of Stones: 1
• Stone Shape: Octagon
• Stone Size: 11mm x 8mm
• Carat Weight: 3.33ct
• Natural/Created: Natural Black Onyx
• Country of Origin: Brazil

marcasite Information:

• Number of Stones: 1
• Stone Shape: Round
• Stone Size: 2.00mm
• Carat Weight: 0.04ct
• Natural/Created: Natural marcasite
• Country of Origin: Austria

Crafted from sterling silver, this Art Deco inspired necklace features a black onyx gemstone decorated with metallic marcasite gemstones. This elegant necklace design channels Art Deco inspirations through its sparkling embellishments and geometric lines.

Onyx Information:

• Number of Stones: 1
• Stone Shape:
• Stone Size: 8mm x 5mm
• Carat Weight: 1ct
• Natural/Created: Natural Onyx
• Country of Origin: Brazil

marcasite Information:

• Number of Stones: 8
• Stone Shape: Round
• Stone Size: 1 x (1.30mm) | 1 x (1.20mm) | 6 x (0.90mm)
• Carat Weight: 0.07ct
• Natural/Created: Natural marcasite
• Country of Origin: Austria

Framed with rhodium plated sterling silver, this stunning contemporary pendant features a hexagonal prism shaped black onyx gemstone.

This pendant comes with a matching sterling silver chain.

Black Onyx has been used in jewellery for centuries, most notably in ancient cameo jewellery.

Black Onyx Information:

• Number of Stones: 1
• Stone Shape: Hexagon
• Stone Size: 14mm x 4.5mm
• Carat Weight: 1.50ct
• Natural/Created: Natural Black Onyx
• Country of Origin: Brazil

A stunning Art Deco style necklace crafted from sterling silver featuring a black onyx cabochon, offset with sparkling marcasite gemstones with a smaller black onyx above

Black Onyx Information:
• Number of Stones: 2
• Stone Shape: Round
• Stone Size: 14mm | 3mm
• Carat Weight: 3.1ct
marcasite Information:
• Number of Stones: 8
• Stone Shape: Round
• Stone Size: 1.1mm
• Carat Weight: 0.088ct

This stunning sterling silver art deco necklace features a diamond shaped mother of pearl gemstone, above a diamond shaped black onyx stone decorated with sparkling marcasite.

This chain is 45cm long with a 3cm extender.

Black onyx is a member of the chalcedony family and has been used in jewellery for centuries, most notably in ancient cameo jewellery.

Mother of pearl, also known as nacre, is an iridescent blend of minerals that are produced by oysters and some other molluscs.

Once used as a substitute for the shine of a diamond, the natural semi-precious gemstone marcasite is now celebrated for its lustre and metallic beauty.

Black Onyx Information:

• Number of Stones: 1
• Stone Shape: diamond
• Stone Size: 18mm x 5mm
• Carat Weight: 1.00ct
• Natural/Created: Natural Onyx
• Country of Origin: Brazil

Mother of Pearl Information:

• Number of Stones: 1
• Stone Shape: diamond
• Stone Size: 5mm x 3mm
• Carat Weight: 0.25ct
• Natural/Created: Natural Mother of Pearl
• Country of Origin: Australia

marcasite Information:

• Number of Stones: 2
• Stone Shape: Round
• Stone Size: 1.30mm
• Carat Weight: 0.03ct
• Natural/Created: Natural marcasite
• Country of Origin: Austria

Our Art Deco inspired jewellery embodies the geometric lines and embellished styles that once adorned the glamorous of the 1920s.

This Art Deco inspired necklace features a central round black onyx gemstone, surrounded by glistening marcasite stones.

It was once thought that onyx eliminated negative thinking, heightened the senses and improved intuition.

Onyx Information:

• Number of Stones: 1
• Stone Shape: Round
• Stone Size: 7mm
• Carat Weight: 1.20ct
• Natural/Created: Natural Onyx
• Country of Origin: Brazil

marcasite Information:

• Number of Stones: 18
• Stone Shape: Round
• Stone Size: 17 x (1.20mm) | 1 x (1.10mm)
• Carat Weight: 0.23ct
• Natural/Created: Natural marcasite
• Country of Origin: Austria

Gemondo's Art Deco collection brings you wonderfully embellished Great Gatsby-esque designs inspired by the roaring 1920's. This stunning bold art deco style necklace crafted from 925 sterling silver features a large black onyx cabochon drop offset with sparkling marcasite gemstones.

This necklace comes on a matching 45cm/ 18inch sterling silver chain which fastens with a sprung ring clasp.

Onyx Information:

• Number of Stones: 1
• Stone Shape: Pear, Cabochon
• Stone Size: 23.5x14mm
• Carat Weight: 7.00ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Brazil

marcasite Information:

• Number of Stones: 10
• Stone Shape: Round
• Stone Size: 1.00mm
• Carat Weight: 0.08ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Austria

Sterling Silver Black Onyx, Mother of Pearl & marcasite 45cm Necklace

A wonderful art deco style pendant crafted from sterling silver, set with cabochon cut black onyx and white mother of pearl finished with handset sparkling marcasite gemstones

Onyx Information:

• Number of Stones: 3
• Stone Cut: Cabochon
• Carat Weight: 0.75ct

Mother of Pearl Information:

• Number of Stones: 1
• Stone Cut: Cabochon
• Carat Weight: 1.50ct

marcasite Information:

• Number of Stones: 21
• Stone Shape: Round
• Carat Weight: 0.27ct

Gemondo's Art Deco collection brings you wonderfully embellished Great Gatsby-esque designs inspired by the roaring 1920's. This stunning classic art deco style necklace crafted from 925 sterling silver features a bold art deco design set with a baguette cut black onyx cabochon framed with sparkling marcasite gemstones.

This necklace comes on a matching 45cm/ 18inch sterling silver chain which fastens with a sprung ring clasp.

Onyx Information:

• Number of Stones: 1
• Stone Shape: Baguette, Cabochon
• Stone Size: 12.75x7.5mm
• Carat Weight: 2.31ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Brazil

marcasite Information:

• Number of Stones: 12
• Stone Shape: Round
• Stone Size: 1.00-1.70mm
• Carat Weight: 0.13ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Austria

About This Item

A striking hexagon cut black onyx gemstone, embellished in marcasite and set in classic sterling silver. This pendant comes with a matching sterling silver 45cm chain.

Gemstone Information

Onyx is the Greek word for "fingernail", as the gemstone was believed to be formed from the fingernail clippings of the goddess Venus.

Onyx is the perfect gift to give someone celebrating a 7th anniversary.

Ancient Indian cultures believed that placing an onyx on a woman's stomach whilst she was in labour would reduce the pain.

Jewellery Collection

Gemondo's Art Deco Inspired Collection emulates the elegance and stylish times of the 1920s. These designs show off gemstone embellishments across iconic shapes, perfect of lovers of vintage glamour.

A stunning owl design pendant crafted from sterling silver set with sparkling marcasite gemstones, finished with two large black onyx cabochon eyes

This pendant comes on a matching 18inch/45cm sterling silver chain

marcasite Information:

• Number of Stones: 18
• Stone Shape: Round
• Stone Size: 1.30mm - 1.40mm
• Carat Weight: 0.28ct

Onyx Information:

• Number of Stones: 2
• Stone Size: 3.50mm
• Stone Shape: Round
• Carat Weight: 0.30ct

A beautifully designed art deco style pendant with black onyx and marcasite gemstones.

This pendant comes with a matching 45cm / 18in sterling silver chain.

Black Onyx Information:

• Number of Stones: 3
• Stone Shape: diamond | Pear
• Stone Size: 1 x (12mm x 2mm) | 1 x (4mm x 2mm) | 2 x (4mm x 3mm)
• Carat Weight: 0.47ct
• Natural/Created: Natural Black Onyx
• Country of Origin: Brazil

marcasite Information:

• Number of Stones: 3
• Stone Shape: Round
• Stone Size: 0.90mm
• Carat Weight: 0.02ct
• Natural/Created: Natural marcasite
• Country of Origin: Austria

A beautifully designed art deco style pendant with black onyx, opal and marcasite gemstones.

These earrings come with a post and butterfly clip and are suitable for pierced ears only.

Black Onyx Information:

• Number of Stones: 1
• Stone Shape: Pentagon
• Stone Size: 7mm x 3mm
• Carat Weight: 0.50ct
• Natural/Created: Natural Black Onyx
• Country of Origin: Brazil

Opal Information:

• Number of Stones: 1
• Stone Shape: Round
• Stone Size: 4mm
• Carat Weight: 0.17ct
• Natural/Created: Natural Opal
• Country of Origin: Australia

marcasite Information:

• Number of Stones: 7
• Stone Shape: Round
• Stone Size: 1 x (1.00mm) | 6 x (0.90mm)
• Carat Weight: 0.05ct
• Natural/Created: Natural marcasite
• Country of Origin: Austria

Gemondo's Art Deco collection brings you wonderfully embellished Great Gatsby-esque designs inspired by the roaring 1920's. This stunning classic art deco style necklace crafted from 925 sterling silver features a bold art deco design set with contrasting white mother of pearl and black onyx cabochons all offset with sparkling marcasite gemstones.

This necklace comes on a matching 45cm/ 18inch sterling silver chain which fastens with a sprung ring clasp.

Onyx Information:

• Number of Stones: 2
• Stone Shape: diamond, Cabochon
• Stone Size: 20x10mm
• Carat Weight: 2.00ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Brazil

Mother of Pearl Information:

• Number of Stones: 4
• Stone Shape: diamond, Cabochon
• Stone Size: 2x (9x5mm) | 2x (11x11mm)
• Carat Weight: 1.50ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Australia

marcasite Information:

• Number of Stones: 23
• Stone Shape: Round
• Stone Size: 0.90mm
• Carat Weight: 0.16ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Austria

A classic art deco style necklace crafted from sterling silver featuring a stunning marcasite sterling silver pendant in an art deco fashion finished with a irregular cut black onyx gemstone, this necklace includes a matching 45cm 18inch sterling silver chain which fastens with a sprung ring clasp

marcasite Information:

• Number of Stones: 8
• Stone Shape: Round
• Stone Size: 1.50mm
• Carat Weight: 0.13ct
• Natural/Created: Natural Mined Stone
• Country of Origin: Austria

Onyx Information:

• Number of Stones: 1
• Stone Shape: Flat diamond
• Stone Size: 14x11mm
• Carat Weight: 1.50ct
• Natural/Created: Natural Mined Stone
• Wedding Anniversaries: 7th

A beautifully designed art deco style pendant with black onyx and marcasite gemstones.

This pendant comes with a matching 45cm / 18in sterling silver chain.

Black Onyx Information:

• Number of Stones: 1
• Stone Shape: diamond
• Stone Size: 18mm x 6mm
• Carat Weight: 2.00ct
• Natural/Created: Natural Black Onyx
• Country of Origin: Brazil

marcasite Information:

• Number of Stones: 4
• Stone Shape: Round
• Stone Size: 1.00mm
• Carat Weight: 0.03ct
• Natural/Created: Natural marcasite
• Country of Origin: Austria