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.

Firmamento Pastilla Square Matte Diamond Necklace in Yellow Gold - Diamond Necklaces Firmamento Pastilla Square Matte Diamond Necklace in Yellow Gold - Diamond Necklaces 2
  • New
€1,206.61 (tax excl.)
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
  • New
€1,206.61 (tax excl.)
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
  • New
€1,603.31 (tax excl.)
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
  • New
Pendants

Sira 0.10-0.50ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99927611041
From €1,650.00 (tax excl.)
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
  • New
Diamond Necklaces

Sira 0.55-1.00ct Diamond Solitaire Necklace yellow gold

NICOLS
99927612045
From €2,985.00 (tax excl.)
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
  • New
Diamond Necklaces

Sira 0.55-1.00ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99927612041
From €5,980.00 (tax excl.)
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
  • New
From €1,632.00 (tax excl.)
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 €5,970.00 (tax excl.)
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 €5,980.00 (tax excl.)
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
From €1,632.00 (tax excl.)
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 €1,650.00 (tax excl.)
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
  • New
High Jewelry

Gardenia Red Carpet White Gold Diamond Choker

NICOLS
32810020041
€54,458.68 (tax excl.)
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
  • New
Diamond Necklaces

Riviere Constellation Diamond Necklace

NICOLS
14711260045
€10,892.56 (tax excl.)
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
  • New
High Jewelry

Red Carpet Charms Necklace Knob Yellow Gold

NICOLS
14711280045
€3,264.46 (tax excl.)
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
€3,272.73 (tax excl.)
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
€1,727.27 (tax excl.)
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
€2,570.25 (tax excl.)
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
€1,719.01 (tax excl.)
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
€4,239.67 (tax excl.)
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
  • New
Diamond Pendants

LINDA 0.55-1.00ct Diamond Solitaire Necklace Yellow Gold

NICOLS SPECIAL
99922902045
From €3,265.00 (tax excl.)
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
  • On sale!
  • New
From €6,540.00 (tax excl.)
Cute diamond necklace 0.55-1.00ct Lone white goldReferencia_99922902041. Manufactured in Spain by NICOLS Jewelers Madrid 1917. Pendant with diamond set and protected by a white gold bezel. 40cm chain of total length and white gold bezel 18 kt (750). Pendant also called "purity" with diamond in bright size. Color H / I and purity vs / Yes. Accompanied with...
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 (tax excl.)
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 €1,400.00 (tax excl.)
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
  • New
Diamond Necklaces

Grace Gold Diamond Necklace 0.55-1.00 Ct

NICOLS SPECIAL
99927412045
From €5,650.00 (tax excl.)
Diamond Necklace Grace 0.55-1.00ct Lonely yellow goldReferencia_99927412045Pendant with brilliant carving diamond, also called "purity", which is introduced into a 18K yellow gold chain (750) and 40cm of total length. Manufactured in Spain by NICOLS Jewelers Madrid 1917. Authentic, pure, recycled and sustainable yellow gold 18K. Diamond in bright size...
Grace white gold diamond necklace 0.55-1.00 Ct 99927412041
  • New
Diamond Pendants

Grace white gold diamond necklace 0.55-1.00 Ct

NICOLS SPECIAL
99927412041
From €2,830.00 (tax excl.)
Grace Diamond Necklace 0.55-1.00ct Solitaire White GoldReference_99927412041Pendant with brilliant cut diamond, also called 'Pureza', which is inserted into an 18K (750) white gold chain and 40cm total length. Made in Spain by NICOLS Joyeros Madrid 1917. Authentic, pure, recycled and sustainable 18K white gold. Brilliant cut diamond with a weight to...
Diamond JACKIE 0.55-1.00ct Solitaire Necklace Yellow Gold 99925222045 99925232045
  • New
Diamond Pendants

Diamond JACKIE 0.55-1.00ct Solitaire Necklace Yellow Gold

NICOLS SPECIAL
99925232045
From €5,890.00 (tax excl.)
Jackie Twisted 0.55 - 1.00 ct Diamond Solitaire Necklace Yellow GoldReference_ 99925232045Perfect necklace to wear every day. Pendant also called 'Purity', which is inserted into a 18kt (750) yellow gold chain with a total length of 40cm. Made in Spain by NICOLS jewelers Madrid 1917. 18kt yellow gold. Brilliant cut diamond Color H / I and Clarity VS / SI....
Grace Gold Diamond Necklace 0.10-1.50 Ct 99927411045
  • New
Baptism and First Communion Jewelry

Grace Gold Diamond Necklace 0.10-1.50 Ct

NICOLS SPECIAL
99927411045
From €685.00 (tax excl.)
GRACE Purity Diamond Necklace 0.10-0.50ct Solitaire Yellow Gold Reference_99927411045 Pendant with a brilliant-cut diamond, also known as 'Pureza,' attached to an 18K (750) yellow gold chain, 40 cm long. Made in Spain by NICOLS Joyeros Madrid 1917. 18K yellow gold. Brilliant-cut diamond with a weight of 0.10 carats, 0.15 carats, 0.20 carats, 0.25 carats,...
Grace white gold diamond necklace 0.10-0.50 Ct 99927411041
  • New
Necklaces

Grace white gold diamond necklace 0.10-0.50 Ct

NICOLS SPECIAL
99927411041
From €1,380.00 (tax excl.)
GRACE Purity Diamond Necklace 0.10-0.50ct Solitaire White Gold Reference_99927411041 Pendant with a brilliant-cut diamond, also known as 'Pureza,' attached to an 18K (750) white gold chain, 40 cm long. Made in Spain by NICOLS Joyeros Madrid 1917. 18K white gold. Brilliant-cut diamond with a weight of 0.10 carats, 0.15 carats, 0.20 carats, 0.25 carats,...
Nancy Diamond Solitaire Necklace Yellow Gold 99928391045
  • New
From €1,580.00 (tax excl.)
Nancy Diamond Necklace 0.10-0.50ct Lonely yellow goldReferencia_99928391045Pendant with brilliant carving diamond, also called "purity", which is introduced into a 18K yellow gold chain (750) and 40cm of total length. Manufactured in Spain by NICOLS Jewelers Madrid 1917. Yellow gold 18K. Diamond in bright size with a weight to be selected from 0.10 carat,...
Nancy Diamond Solitaire Necklace White Gold 99928391041
  • New
Baptism and First Communion Jewelry

Nancy 0.10-0.50ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99928391041
From €795.00 (tax excl.)
NANCY Diamond Necklace 0.10-0.50ct Solitaire White GoldReference_99928391041Pendant with brilliant cut diamond, also called 'Pureza', which is inserted into a 18K (750) white gold chain and 40cm total length. Made in Spain by NICOLS Joyeros Madrid 1917. 18K white gold. Brilliant cut diamond with a weight to select from 0.10 carats, 0.15 carats, 0.20...
Grace Twisted Gold Diamond Necklace 0.10-1.50 Ct 99927421045
  • New
Baptism and First Communion Jewelry

Grace Twisted Gold Diamond Necklace 0.10-1.50 Ct

NICOLS SPECIAL
99927421045
From €1,370.00 (tax excl.)
Purity Diamond Necklace GRACE TWISTED 0.10-0.50ct Solitaire Yellow GoldReference_99927421045Pendant with brilliant cut diamond, also called 'Pureza', which is inserted into an 18K (750) yellow gold chain and 40cm total length. Made in Spain by NICOLS Joyeros Madrid 1917. 18K yellow gold. Brilliant cut diamond with a weight to select from 0.10 carats, 0.15...
GraceTwisted white gold and diamond necklace 0.10-0.50 Ct 99927421041
  • New
Baptism and First Communion Jewelry

Grace Twisted white gold and diamond necklace 0.10-0.50 Ct

NICOLS SPECIAL
99927421041
From €1,380.00 (tax excl.)
Purity Grace Twisted 0.10-0.50ct Solitaire Diamond Necklace in White Gold Reference_99927421041 Pendant with a brilliant-cut diamond, also known as "Pureza," attached to an 18K (750) white gold chain, 40 cm long. Made in Spain by NICOLS Joyeros Madrid 1917. 18K white gold. Brilliant-cut diamond with a weight of 0.10 carats, 0.15 carats, 0.20 carats,...
Diamond Necklace GraceTwisted 0.55-1.00ct Yellow Gold | NICOLS
  • New
Diamond Necklaces

GraceTwisted 0.55-1.00 Ct Yellow Gold and Diamond Necklace

NICOLS SPECIAL
99927422045
From €5,650.00 (tax excl.)
Grace Twisted Diamond Necklace 0.55-1.00ct Solitaire Yellow Gold Reference_99927422045 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...
GraceTwisted 0.55-1.00 Ct White Gold and Diamond Necklace 99927422041
  • New
From €5,660.00 (tax excl.)
Diamond Necklace Grace Twisted 0.55-1.00ct Lone white goldReferencia_99927422041Pendant with brilliant carving diamond, also called "purity", which is introduced into a 18K white gold chain (750) and 40cm of total length. Manufactured in Spain by NICOLS Jewelers Madrid 1917. Authentic, pure, recycled and sustainable 18k white gold. Diamond in bright size...
Jackie Twisted 0.55-1.00ct Diamond Solitaire Necklace White Gold 99925232041
  • On sale!
  • New
Diamond Pendants

Jackie Twisted 0.55-1.00ct Diamond Solitaire Necklace White Gold

NICOLS SPECIAL
99925232041
From €5,900.00 (tax excl.)
Jackie Twisted 0.55 - 1.00 ct Diamond Solitaire Necklace White GoldReference_ 99925232041Perfect necklace to wear every day. Pendant also called 'Purity', which is inserted into a 18kt (750) white gold chain and 40cm in total length. Made in Spain by NICOLS jewelers Madrid 1917. 18kt white gold. Brilliant cut diamond Color H / I and Clarity VS / SI....
Jackie Twisted 0.10-0.50ct Diamond Solitaire Necklace Yellow Gold 99925231045
  • New
Baptism and First Communion Jewelry

Jackie Twisted 0.10-0.50ct Diamond Solitaire Necklace Yellow Gold

NICOLS SPECIAL
99925231045
From €1,610.00 (tax excl.)
Jackie Twisted 0.10-0.55ct Diamond Solitaire Necklace Yellow GoldReference_99925231045Perfect necklace to wear every day. Pendant also called 'Purity', which is inserted into a 18kt (750) yellow gold chain with a total length of 40cm. Made in Spain by NICOLS jewelers Madrid 1917. 18kt yellow gold. Brilliant cut diamond with a weight to select from 0.10 to...

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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