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
  • New
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
  • New
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
  • New
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
  • New
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
  • New
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
  • New
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
  • New
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...

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.

We are at your disposal

We offer you personal advice, without obligation, online or in store:

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

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