Diamond Necklaces

Diamond Necklaces — handmade in Spain since 1917

Discover the timeless elegance of our diamond necklaces, an expression of luxury and craftsmanship that Nicols Joyeros has perfected since 1917. Each piece reflects the dedication of four generations of artisan jewelers, who carefully select natural diamonds to create unique jewelry in 18k gold or platinum. The purity and brilliance of each diamond are guaranteed, with GIA or IGI certification on stones from 0.25 ct, ensuring the highest quality and authenticity.

Choose from designs that combine tradition and modernity, designed to enhance your style with sophistication and strength. Our diamond necklaces are more than jewelry; they are symbols of unforgettable moments, crafted with precision and artisanal passion. Make it unique by selecting the piece that best reflects your personality and the story you want to tell.

You might also be interested in: diamond-riviere-necklaces · blue-stone-necklaces · red-stone-necklaces

Firmamento Pastilla Square Matte Diamond Necklace in Yellow Gold - Diamond Necklaces Firmamento Pastilla Square Matte Diamond Necklace in Yellow Gold - Diamond Necklaces 2
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Diamond Necklaces

Firmamento Pastilla Square Matte Diamond Necklace in Yellow Gold

NICOLS
14711301145
€1,460.00
Firmamento Pastilla Square matte diamond necklace in yellow gold. A contemporary jewel that combines texture, geometry and refined brilliance.Reference: 14711301145Technical detailsMetal: 18K yellow gold, matte finishDiamonds: Brilliant cutColor: H-IClarity: VS-SITotal diamond weight: 0.18 ctThe Firmamento Pastilla Square necklace in matte yellow gold...
Firmamento Pastilla Square Diamond Necklace in Yellow Gold - Diamond Necklaces Firmamento Pastilla Square Diamond Necklace in Yellow Gold - Diamond Necklaces 2
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Diamond Necklaces

Firmamento Pastilla Square Diamond Necklace in Yellow Gold

NICOLS
14711301045
€1,460.00
Firmamento Pastilla Square diamond necklace in yellow gold. A modern and elegant jewel defined by its geometric design and subtle brilliance.Reference: 14711301045Technical detailsMetal: 18K yellow goldDiamonds: Brilliant cutColor: H-IClarity: VS-SITotal diamond weight: 0.18 ctChain length: 45 cmThe Firmamento Pastilla Square necklace in yellow gold...
Firmamento Pastilla Square Diamond Necklace in Yellow Gold - Diamond Necklaces Firmamento Pastilla Square Diamond Necklace in Yellow Gold - Diamond Necklaces 2
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Diamond Necklaces

Firmamento Pastilla Square Diamond Necklace in Yellow Gold

NICOLS
14711300045
€1,940.00
Firmamento Pastilla Square diamond necklace in yellow gold. A modern and elegant jewel defined by its geometric design and refined brilliance.Reference: 14711300045Technical detailsMetal: 18K yellow goldDiamonds: Brilliant cutColor: H-IClarity: VS-SITotal diamond weight: 0.38 ctChain length: 45 cmThe Firmamento Pastilla Square necklace in yellow gold...
Sira 0.10-0.50ct Diamond Solitaire Necklace White Gold 99927601041 99927611041
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Pendants

Sira 0.10-0.50ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99927611041
From €825.00
SIRA Diamond Necklace 0.10-0.55ct Solitaire White GoldReference_99925222041Perfect necklace for everyday wear. Purity pendant, also known as a 'Purity' pendant, is set on an 18kt (750) white gold chain with a total length of 40cm. Made in Spain by NICOLS Jewelers, Madrid, 1917. 18kt white gold. Brilliant-cut diamond with a selectable weight from 0.10 to...
Sira 0.55-1.00ct Diamond Solitaire Necklace yellow gold 99927602045 99927612045
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Diamond Necklaces

Sira 0.55-1.00ct Diamond Solitaire Necklace yellow gold

NICOLS
99927612045
From €2,985.00
SIRA Diamond Necklace 0.55ct to 1.00ct Solitaire Yellow GoldReference_99927612045Perfect necklace for everyday wear. Purity pendant, also known as a 'Purity' pendant, is set on an 18K (750) yellow gold chain, 40cm in total length. Made in Spain by NICOLS Jewelers, Madrid 1917. 18K yellow gold. Brilliant-cut diamond with a selectable weight from 0.55 to...
Sira 0.55-1.00ct Diamond Solitaire Necklace White Gold 99927602041 99927612041
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Diamond Necklaces

Sira 0.55-1.00ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99927612041
From €2,990.00
SIRA Diamond Necklace 0.55ct to 1.00ct Solitaire White GoldReference_99927612041Perfect necklace for everyday wear.This pendant, also known as a 'Purity' pendant, is set on an 18K (750) white gold chain, 40cm in total length.Made in Spain by NICOLS Jewelers, Madrid, 1917.18K white gold.Brilliant-cut diamond with a selectable weight of 0.55 to 1.00 carats,...
Sira 0.10-0.50ct Diamond Solitaire Necklace yellow Gold 99927601045 99927611045
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Pendants

Sira 0.10-0.50ct Diamond Solitaire Necklace yellow Gold

NICOLS SPECIAL
99927611045
From €816.00
SIRA Diamond Necklace 0.10-0.55ct Solitaire Yellow GoldReference_99927611045Perfect necklace for everyday wear.Purity pendant, also known as a 'Purity' pendant, is set on an 18K (750) yellow gold chain, 40cm in total length.Made in Spain by NICOLS Jewelers, Madrid, 1917.18K yellow gold.Brilliant-cut diamond with a selectable weight of 0.10 to 0.15 carats,...
Sira 0.55-1.00ct Diamond Solitaire Necklace yellow gold 99927602045
  • New
Diamond Necklaces

Sira 0.55-1.00ct Diamond Solitaire Necklace yellow gold

NICOLS SPECIAL
99927602045
From €2,985.00
SIRA Diamond Necklace 0.55ct to 1.00ct Solitaire Yellow GoldReference_99927602045Perfect necklace for everyday wear.Pendant also known as "Purity," with a ring, which is attached to an 18K (750) yellow gold chain with a total length of 40cm.Made in Spain by NICOLS Jewelers, Madrid 1917.18K yellow gold.Brilliant-cut diamond with a selectable weight from...
Sira 0.55-1.00ct Diamond Solitaire Necklace White Gold 99927602041 99927602041
  • New
Diamond Necklaces

Sira 0.55-1.00ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99927602041
From €2,990.00
SIRA Diamond Necklace 0.55ct to 1.00ct Solitaire White GoldReference_99927602041Perfect necklace for everyday wear.Purity pendant, with a ring, on an 18K (750) white gold chain, 40cm in total length.Made in Spain by NICOLS Jewelers, Madrid 1917.18K white gold.Brilliant-cut diamond with a selectable weight from 0.55 to 1.00 carats, H/I color and VS/SI...
Sira 0.10-0.50ct Diamond Solitaire Necklace yellow Gold 99927601045
  • New
Pendants

Sira 0.10-0.50ct Diamond Solitaire Necklace yellow Gold

NICOLS SPECIAL
99927601045
From €816.00
SIRA Diamond Necklace 0.10–0.55ct Solitaire Yellow GoldReference_99927601045The perfect necklace to wear every day. A pendant also known as “Purity”, featuring a ring, set on an 18K (750) yellow gold chain with a total length of 40 cm. Handcrafted in Spain by NICOLS jewelers, Madrid 1917. 18K yellow gold. Brilliant-cut diamond with a selectable weight...
Sira 0.10-0.50ct Diamond Solitaire Necklace White Gold 99927601041
  • New
Pendants

Sira 0.10-0.50ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99927601041
From €825.00
SIRA Diamond Necklace 0.10-0.55ct Solitaire White GoldReference_99927611041Perfect necklace for everyday wear. Purity pendant, also known as a "Purity" pendant, is set on an 18K (750) white gold chain, 40cm in total length. Made in Spain by NICOLS Jewelers, Madrid 1917. 18K white gold. Brilliant-cut diamond with a selectable weight of 0.10 to 0.55 carats,...
Gardenia Red Carpet White Gold Diamond Choker - High jewelry Gardenia Red Carpet White Gold Diamond Choker - High jewelry 2
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High Jewelry

Gardenia Red Carpet White Gold Diamond Choker

NICOLS
32810020041
€65,895.00
Gardenia Red Carpet choker in white gold with marquise and princess diamonds. Pure light and fine jewelry elegance. Reference: 32810020041 Technical Details Collection: Gardenia Red Carpet Metal: 18K white gold Diamonds: Marquise and princess cut Color: H-I Clarity: VS-SI Total diamond weight: 13.85 ct The Gardenia Red Carpet choker in white gold is a...
Riviere Constellation Diamond Necklace - Diamond Necklaces Riviere Constellation Diamond Necklace - Diamond Necklaces 2
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Diamond Necklaces

Riviere Constellation Diamond Necklace

NICOLS
14711260045
€13,180.00
Riviere necklace in yellow gold and brilliant-cut diamonds with a total weight of 1.80 ct. Technical Sheet: Reference: 14711260045 Constellation pendant in yellow gold – A celestial sparkle transformed into a jewel. Inspired by the harmony and mystery of the constellations, this pendant traces a line of light reminiscent of the stars aligned in the...
Red Carpet Charms Necklace Knob Yellow Gold - High jewelry Red Carpet Charms Necklace Knob Yellow Gold - High jewelry 2
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High Jewelry

Red Carpet Charms Necklace Knob Yellow Gold

NICOLS
14711280045
€3,950.00
Red Carpet Perilla Charms Necklace in Yellow Gold Technical Details: Reference: 14711280045 Red Carpet Perilla Pendant 1.10ct – Yellow Gold and Diamonds This exclusive pendant from the Red Carpet collection is a jewel designed to shine brightly on the most special moments: from an unforgettable gala to your wedding day. Handcrafted in our fine jewelry...
Necklace Charms Red Carpet Knob - High jewelry Necklace Charms Red Carpet Knob - High jewelry 2
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High Jewelry

Necklace Charms Red Carpet Knob

NICOLS
14711280041
€3,960.00
Red Carpet Perilla Charms Necklace Technical Details: Reference: 14711280041 Red Carpet Perilla Pendant 1.10ct – White Gold and Diamonds This exclusive pendant from the Red Carpet collection is a jewel designed to shine brightly on the most special moments: from an unforgettable gala to your wedding day. Handcrafted in our fine jewelry workshops in...
Circle of Life Snake Necklace - Diamond Necklaces Circle of Life Snake Necklace - Diamond Necklaces 2
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Diamond Necklaces

Circle of Life Snake Necklace

NICOLS
14711290041
€2,090.00
Circle of Life Snake Necklace – a jewel that symbolizes eternity, renewal, and the beauty of new beginnings.Designed and handcrafted in Nicols’ own high jewelry workshops in Madrid, this necklace was created to accompany you every day without compromising on luxury and elegance. Made in 18k white gold with a white rhodium finish, its circular shape...
Solstice Riviere Tapered Circle Necklace - Diamond Necklaces Solstice Riviere Tapered Circle Necklace - Diamond Necklaces 2
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Diamond Necklaces

Solstice Riviere Tapered Circle Necklace

NICOLS
14711240041
€3,110.00
Riviere necklace in white gold and tapered circle diamonds – Sustainable Luxury with its Own Style Technical Sheet: Reference: 14711240041 Pendant crafted in white gold in the shape of a tapered circle. Featuring brilliant-cut diamonds in various sizes with a total weight of 1.00 carats. Includes a 40 cm white gold chain. Discover the solar elegance of...
Circle of Life Snake Necklace - Diamond Necklaces Circle of Life Snake Necklace - Diamond Necklaces 2
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Diamond Necklaces

Circle of Life Snake Necklace

NICOLS
14711290045
€2,080.00
Circle of Life Snake Necklace – a jewel with deep meaning that unites symbolism, style, and luxury in a single piece.Artisanally crafted in Spain, in Nicols' own high jewelry workshops in Madrid, this necklace is made in 18k yellow gold, offering a luminous warmth ideal for any occasion.The design features an open circle with snake-like texture, set with...
Triple Riviere Diamond Constellation Pendant - Diamond Necklaces Triple Riviere Diamond Constellation Pendant - Diamond Necklaces 2
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Diamond Necklaces

Triple Riviere Diamond Constellation Pendant

NICOLS
14711250041
€5,130.00
Triple Riviere pendant in white gold and brilliant-cut diamonds with a total weight of 3.10 ct. Technical Details: Reference: 14711250041 Constellation pendant in white gold with diamonds – Celestial elegance for women with their own light The Nicols Constellation pendant is a jewel that pays homage to the radiance of the universe and the most...
LINDA 0.55-1.00ct Diamond Solitaire Necklace Yellow Gold 99922902045
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Diamond Pendants

LINDA 0.55-1.00ct Diamond Solitaire Necklace Yellow Gold

NICOLS SPECIAL
99922902045
From €3,265.00
Diamond Necklace LADY 0.55-1.00ct Solitaire Yellow GoldReference_99922892045Made in Spain by NICOLS jewelers Madrid 1917. Diamond pendant set and protected by a yellow gold bezel. 40cm total length chain and 18 kt (750) yellow gold bezel. Pendant also called 'Purity' with brilliant cut diamond. Color H / I and Purity VS / SIAccompanied with Certificate of...
LINDA 0.55-1.00ct Diamond Solitaire Necklace White Gold 99922902041
  • New
Pendants

LINDA 0.55-1.00ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99922902041
From €3,270.00
LINDA 0.55-1.00ct Diamond Solitaire Necklace White GoldReference_99922902041. Made in Spain by NICOLS jewelers Madrid 1917. Diamond pendant set and protected by a white gold bezel. 40cm total length chain and 18 kt (750) white gold bezel. Pendant also called "Purity" with brilliant cut diamond. Color H / I and Purity VS / SI. Accompanied with Certificate...
LINDA 0.10-0.50ct Diamond Solitaire Necklace Yellow Gold 99922901045
  • New
Diamond Pendants

LINDA 0.10-0.50ct Diamond Solitaire Necklace Yellow Gold

NICOLS SPECIAL
99922901045
From €975.00
LINDA 0.10-0.55ct Diamond Solitaire Necklace White GoldReference_99922901041 Made in Spain by NICOLS jewelers Madrid 1917. Diamond pendant set and protected by a white gold bezel. 40cm total length chain and 18 kt (750) white gold bezel. Pendant also called 'Purity' with brilliant cut diamond. Color H / I and Purity VS / SI. Accompanied with Certificate...
LINDA 0.10-0.50ct Diamond Solitaire Necklace White Gold 99922901041
  • New
Diamond Necklaces

LINDA 0.10-0.50ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99922901041
From €700.00
LINDA 0.10-0.55ct Diamond Solitaire Necklace White GoldReference_99922901041 Made in Spain by NICOLS jewelers Madrid 1917. Diamond pendant set and protected by a white gold bezel. 40cm total length chain and 18 kt (750) white gold bezel. Pendant also called 'Purity' with brilliant cut diamond. Color H / I and Purity VS / SI. Accompanied with Certificate...
Grace Gold Diamond Necklace 0.55-1.00 Ct 99927412045
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Diamond Necklaces

Grace Gold Diamond Necklace 0.55-1.00 Ct

NICOLS SPECIAL
99927412045
From €2,825.00
Grace Diamond Necklace 0.55-1.00ct Solitaire Yellow Gold Reference_99927412045 Pendant with a brilliant-cut diamond, also known as "Pureza," attached to a 18K (750) yellow gold chain, 40cm long. Made in Spain by NICOLS Joyeros Madrid 1917. Authentic, pure, recycled, and sustainable 18K yellow gold. Brilliant-cut diamond with a weight of 0.55 carats, 0.60...

Why choose Nicols

  • More than 100 years of tradition. Family jewelry business founded in 1917.
  • Four generations of artisans. Design and repair in our own workshop.
  • Certified materials. 18 k gold and natural diamonds with GIA or IGI certification.
  • Personalized service. Online or at any of our boutiques in Madrid and Valencia.
  • Wide catalog. +147 models in our collection.

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Five boutiques in Madrid and one in Valencia. See all our stores →

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