162 weergegeven resultaten
Bespaar: €127Luna Full Moon Ring - Royal Coster DiamondsLuna Full Moon Ring - Royal Coster Diamonds
Luna Full Moon Ring

Royal Coster Diamonds

€ 850Vanaf € 723
Ruby and Diamond Ring 1.27 Carat Oval Cut Ruby with Brilliant Cut Diamond 18K Yellow Gold - Royal Coster Diamonds
Robijn en Diamanten Ring 1.27 Karaat Oval Cut Robijn met Briljant Geslepen Diamant 18K Geelgoud

Royal Coster Diamonds

€ 6.400€ 4.800
Luna Diamond Sky Bracelet - Royal Coster Diamonds
Luna Diamond Sky Armband

Royal Coster Diamonds

€ 770€ 655
Bespaar: €292Classics Willeke Ring - Royal Coster DiamondsClassics Willeke Ring - Royal Coster Diamonds
Classics Willeke Ring

Royal Coster Diamonds

€ 1.950Vanaf € 1.658
Emerald cut Necklace - Royal Coster DiamondsEmerald cut Necklace - Royal Coster Diamonds
Emerald cut Ketting

Royal Coster Diamonds

€ 900€ 675
Bespaar: €210Luna Full Moon Earrings - Royal Coster Diamonds
Luna Full Moon Oorbellen

Royal Coster Diamonds

€ 1.400Vanaf € 1.190
Diamond Station Necklace 0.95 Carat Marquise Cut with Brilliant 18K White Gold - Royal Coster Diamonds
Diamanten Station Ketting 0.95 Karaat Marquise Geslepen met Briljant 18K Witgoud

Royal Coster Diamonds

€ 2.900€ 2.175
Bespaar: €337Classics Miriam Ring - Royal Coster DiamondsClassics Miriam Ring - Royal Coster Diamonds
Classics Miriam Ring

Royal Coster Diamonds

€ 2.250Vanaf € 1.913
Pear cut Ring - Royal Coster DiamondsPear cut Ring - Royal Coster Diamonds
Pear cut ring

Royal Coster Diamonds

€ 680€ 510
14K Gold Bracelet with Birthstone March - Aquamarine - Royal Coster Diamonds14K Gold Bracelet with Birthstone March - Aquamarine - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen maart - Aquamarijn

Royal Coster Diamonds

€ 399€ 339
Star Necklace - Royal Coster DiamondsStar Necklace - Royal Coster Diamonds
Ster ketting

Royal Coster Diamonds

€ 690€ 518
Bespaar: €210Classics Miriam Earrings - Royal Coster Diamonds
Classics Miriam Oorbellen

Royal Coster Diamonds

€ 1.400Vanaf € 1.190
Diamond Tennis Bracelet 3.52 Carat Brilliant Cut 18K White Gold - Royal Coster Diamonds
Diamanten Tennis Armband 3.52 Karaat Briljant Geslepen 18K Witgoud

Royal Coster Diamonds

€ 8.550€ 6.413
Luna Shooting Star Earrings - Royal Coster DiamondsLuna Shooting Star Earrings - Royal Coster Diamonds
Luna Shooting Star Oorbellen

Royal Coster Diamonds

€ 3.150€ 2.678
Oval cut Ring - Royal Coster DiamondsOval cut Ring - Royal Coster Diamonds
Oval Cut Ring

Royal Coster Diamonds

€ 830€ 623
Emerald cut Ring - Royal Coster DiamondsEmerald cut Ring - Royal Coster Diamonds
Emerald cut ring

Royal Coster Diamonds

€ 840€ 630
Bespaar: €148Luna Full Moon Necklace - Royal Coster Diamonds
Luna Full Moon Ketting

Royal Coster Diamonds

€ 990Vanaf € 842
Bespaar: €208Classics Miriam Ring - Royal Coster DiamondsClassics Miriam Ring - Royal Coster Diamonds
Miriam Floral Ring

Royal Coster Diamonds

€ 1.390Vanaf € 1.182
Diamond drop earrings 0.40 carat brilliant cut pavé spike 18K yellow gold Royal Coster Diamonds 1530501Y18
Diamanten Druppel Oorbellen 0.40 Karaat Briljant Geslepen 18K Geelgoud

Royal Coster Diamonds

€ 2.000€ 1.500
Bespaar: €210Classics Miriam Earrings - Royal Coster Diamonds
Miriam Floral Oorbellen

Royal Coster Diamonds

€ 1.400Vanaf € 1.190
Rainbow Spectrum Earrings - Royal Coster Diamonds
Rainbow Spectrum Oorbellen

Royal Coster Diamonds

€ 2.500€ 2.125
Bespaar: €142Luna Full Moon Earrings - Royal Coster Diamonds
Luna Full Moon Oorbellen

Royal Coster Diamonds

€ 950Vanaf € 808
Bespaar: €142Luna Full Moon Earrings - Royal Coster Diamonds
Luna Full Moon Oorbellen

Royal Coster Diamonds

€ 950Vanaf € 808
Bespaar: €112Classics Miriam Pendant - Royal Coster Diamonds
Classics Miriam Hanger

Royal Coster Diamonds

€ 750Vanaf € 638
Diamond Ring 0.74 Carat Brilliant Cut 18K White Gold - Royal Coster Diamonds
Diamanten Ring 0.74 Karaat Briljant Geslepen 18K Witgoud

Royal Coster Diamonds

€ 4.600€ 3.450
Bespaar: €208Classics Miriam Ring - Royal Coster DiamondsClassics Miriam Ring - Royal Coster Diamonds
Classics Miriam Ring

Royal Coster Diamonds

€ 1.390Vanaf € 1.182
Luna Shooting Star Bracelet - Royal Coster DiamondsLuna Shooting Star Bracelet - Royal Coster Diamonds
Luna Shooting Star Armband

Royal Coster Diamonds

€ 1.900€ 1.615
Classic Drop Necklace - Royal Coster DiamondsClassic Drop Necklace - Royal Coster Diamonds
Classic Drop Ketting

Royal Coster Diamonds

€ 650€ 488
Rainbow Prism Bangle - Royal Coster Diamonds
Rainbow Prism Armband

Royal Coster Diamonds

€ 5.850€ 4.973
Diamond Halo Necklace 0.53 Carat Pear Cut with Brilliant 18K Yellow Gold - Royal Coster Diamonds
Diamanten Halo Ketting 0.53 Karaat Peer Geslepen met Briljant 18K Geelgoud

Royal Coster Diamonds

€ 2.950€ 2.213
Bespaar: €127Luna Full Moon Ring - Royal Coster DiamondsLuna Full Moon Ring - Royal Coster Diamonds
Luna Full Moon Ring

Royal Coster Diamonds

€ 850Vanaf € 723
Luna Diamond Sky Necklace - Royal Coster Diamonds
Luna Diamond Sky Ketting

Royal Coster Diamonds

€ 1.350€ 1.148
Classic Drop Necklace - Royal Coster DiamondsClassic Drop Necklace - Royal Coster Diamonds
Classic Drop Ketting

Royal Coster Diamonds

€ 650€ 488
Bespaar: €292Classics Willeke Ring - Royal Coster DiamondsClassics Willeke Ring - Royal Coster Diamonds
Willeke Half Eternity Ring

Royal Coster Diamonds

€ 1.950Vanaf € 1.658
Luna Shooting Star Necklace - Royal Coster DiamondsLuna Shooting Star Necklace - Royal Coster Diamonds
Luna Shooting Star Ketting

Royal Coster Diamonds

€ 2.250€ 1.913
Butterfly Bracelet - Royal Coster Diamonds
Butterfly armband

Royal Coster Diamonds

€ 790€ 593
Bespaar: €247Classics Miriam Pendant - Royal Coster Diamonds
Miriam Floral Hanger

Royal Coster Diamonds

€ 1.650Vanaf € 1.403
Luna Shooting Star Ring - Royal Coster DiamondsLuna Shooting Star Ring - Royal Coster Diamonds
Luna Shooting Star Ring

Royal Coster Diamonds

€ 1.900€ 1.615
14K Gold Necklace with Birthstone February - Amethyst - Royal Coster Diamonds14K Gold Necklace with Birthstone February - Amethyst - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen februari - Amethist

Royal Coster Diamonds

€ 629€ 535
Classic Drop Necklace - Royal Coster DiamondsClassic Drop Necklace - Royal Coster Diamonds
Classic Drop Ketting

Royal Coster Diamonds

€ 650€ 488
Diamond drop earrings 0.51 carat brilliant cut graduated 18K white gold Royal Coster Diamonds 1530543W18
Diamanten Druppel Oorbellen 0.51 Karaat Briljant Geslepen 18K Witgoud

Royal Coster Diamonds

€ 2.050€ 1.538
Bespaar: €112Classics Miriam Pendant - Royal Coster Diamonds
Miriam Floral Hanger

Royal Coster Diamonds

€ 750Vanaf € 638
14K Gold Bracelet with Birthstone January - Garnet - Royal Coster Diamonds14K Gold Bracelet with Birthstone January - Garnet - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen januari - Granaat

Royal Coster Diamonds

€ 399€ 339
Bespaar: €112Classics Miriam Pendant - Royal Coster Diamonds
Miriam Floral Hanger

Royal Coster Diamonds

€ 750Vanaf € 638
Nikkie Solitaire Necklace - Royal Coster Diamonds
Nikkie Solitaire Ketting Briljant Geslepen Diamant 18K Witgoud

Royal Coster Diamonds

€ 840€ 630
Bespaar: €148Luna Full Moon Necklace - Royal Coster Diamonds
Luna Full Moon Ketting

Royal Coster Diamonds

€ 990Vanaf € 842
Diamond Ring 0.48 Carat Pear Cut with Brilliant Cut 18K Yellow Gold - Royal Coster Diamonds
Diamanten Ring 0.48 Karaat Peer Geslepen met Briljant Geslepen 18K Geelgoud

Royal Coster Diamonds

€ 3.600€ 2.700
14K Gold Necklace with Birthstone August - Peridot - Royal Coster Diamonds14K Gold Necklace with Birthstone August - Peridot - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen augustus - Peridot

Royal Coster Diamonds

€ 629€ 535
14K Gold Necklace with Birthstone June - Light Amethyst - Royal Coster Diamonds14K Gold Necklace with Birthstone June - Light Amethyst - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen juni - Lichte amethist

Royal Coster Diamonds

€ 629€ 535
14K Gold Bracelet with Birthstone September - Sapphire - Royal Coster Diamonds14K Gold Bracelet with Birthstone September - Sapphire - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen september - Saffier

Royal Coster Diamonds

€ 399€ 339
14K Gold Necklace with Birthstone September - Sapphire - Royal Coster Diamonds14K Gold Necklace with Birthstone September - Sapphire - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen september - Saffier

Royal Coster Diamonds

€ 629€ 535
Bespaar: €247Classics Miriam Pendant - Royal Coster Diamonds
Classics Miriam Hanger

Royal Coster Diamonds

€ 1.650Vanaf € 1.403
Diamond Halo Necklace 0.54 Carat Oval Cut with Brilliant 18K White Gold - Royal Coster Diamonds
Diamanten Halo Ketting 0.54 Karaat Ovaal Geslepen met Briljant 18K Witgoud

Royal Coster Diamonds

€ 3.000€ 2.250
14K Gold Necklace with Birthstone July - Ruby - Royal Coster Diamonds14K Gold Necklace with Birthstone July - Ruby - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen juli - Robijn

Royal Coster Diamonds

€ 629€ 535
14K Gold Bracelet with Birthstone December - Blue Topaz - Royal Coster Diamonds14K Gold Bracelet with Birthstone December - Blue Topaz - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen december - Blauwe topaas

Royal Coster Diamonds

€ 399€ 339
14K Gold Bracelet with Birthstone May - Emerald - Royal Coster Diamonds14K Gold Bracelet with Birthstone May - Emerald - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen mei - Smaragd

Royal Coster Diamonds

€ 399€ 339
Emerald and Diamond Bangle 3.02 Carat Emerald with Brilliant Cut Diamond 18K White Gold - Royal Coster DiamondsEmerald and Diamond Bangle 3.02 Carat Emerald with Brilliant Cut Diamond 18K White Gold - Royal Coster Diamonds
Smaragd en Diamanten Bangle 3.02 Karaat Smaragd met Briljant Geslepen Diamant 18K Witgoud

Royal Coster Diamonds

€ 7.100€ 5.325
14K Gold Necklace with Birthstone March - Aquamarine - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen maart - Aquamarijn

Royal Coster Diamonds

€ 629€ 535
14K Gold Bracelet with Birthstone June - Light Amethyst - Royal Coster Diamonds14K Gold Bracelet with Birthstone June - Light Amethyst - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen juni - Lichte amethist

Royal Coster Diamonds

€ 399€ 339
14K Gold Bracelet with Birthstone February - Amethyst - Royal Coster Diamonds14K Gold Bracelet with Birthstone February - Amethyst - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen februari - Amethist

Royal Coster Diamonds

€ 399€ 339
14K Gold Necklace with Birthstone April - Diamond - Royal Coster Diamonds14K Gold Necklace with Birthstone April - Diamond - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen april - Diamant

Royal Coster Diamonds

€ 950€ 808
Diamanten Oorklimmers 0.37 Karaat Marquise Geslepen 18K Witgoud

Royal Coster Diamonds

€ 2.300€ 1.725
14K Gold Bracelet with Birthstone November - Citrine - Royal Coster Diamonds14K Gold Bracelet with Birthstone November - Citrine - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen november - Citrien

Royal Coster Diamonds

€ 399€ 339
14K Gold Bracelet with Birthstone April - Diamond - Royal Coster Diamonds14K Gold Bracelet with Birthstone April - Diamond - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen april - Diamant

Royal Coster Diamonds

€ 720€ 612
14K Gold Necklace with Birthstone October - Tourmaline - Royal Coster Diamonds14K Gold Necklace with Birthstone October - Tourmaline - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen oktober - Toermalijn

Royal Coster Diamonds

€ 629€ 535
14K Gold Bracelet with Birthstone July - Ruby - Royal Coster Diamonds14K Gold Bracelet with Birthstone July - Ruby - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen juli - Robijn

Royal Coster Diamonds

€ 399€ 339
Diamond Ring 0.54 Carat Emerald Cut with Brilliant Cut 18K White Gold - Royal Coster Diamonds
Diamanten Ring 0.54 Karaat Emerald Geslepen met Briljant Geslepen 18K Witgoud

Royal Coster Diamonds

€ 2.950€ 2.213
14K Gold Necklace with Birthstone January - Garnet - Royal Coster Diamonds14K Gold Necklace with Birthstone January - Garnet - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen januari - Granaat

Royal Coster Diamonds

€ 629€ 535
14K Gold Necklace with Birthstone December - Blue Topaz - Royal Coster Diamonds14K Gold Necklace with Birthstone December - Blue Topaz - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen december - Blauwe topaas

Royal Coster Diamonds

€ 629€ 535
14K Gold Necklace with Birthstone November - Citrine - Royal Coster Diamonds14K Gold Necklace with Birthstone November - Citrine - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen november - Citrien

Royal Coster Diamonds

€ 629€ 535
14K Gold Necklace with Birthstone May - Emerald - Royal Coster Diamonds14K Gold Necklace with Birthstone May - Emerald - Royal Coster Diamonds
14-karaat gouden ketting met geboortesteen mei - Smaragd

Royal Coster Diamonds

€ 629€ 535
14K Gold Bracelet with Birthstone October - Tourmaline - Royal Coster Diamonds14K Gold Bracelet with Birthstone October - Tourmaline - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen oktober - Toermalijn

Royal Coster Diamonds

€ 399€ 339
Diamond Necklace 0.51 Carat Brilliant Cut 18K Rose Gold - Royal Coster Diamonds
Diamanten Ketting 0.51 Karaat Briljant Geslepen 18K Roségoud

Royal Coster Diamonds

€ 3.000€ 2.250
14K Gold Bracelet with Birthstone August - Peridot - Royal Coster Diamonds14K Gold Bracelet with Birthstone August - Peridot - Royal Coster Diamonds
14-karaat gouden armband met geboortesteen augustus - Peridoot

Royal Coster Diamonds

€ 399€ 339
Bespaar: €337Signature C Solitaire Necklace - Royal Coster DiamondsSignature C Solitaire Necklace - Royal Coster Diamonds
Signature C Solitaire Ketting

Royal Coster Diamonds

€ 2.250Vanaf € 1.913
Diamond Bangle 1.12 Carat Brilliant Cut 18K White Gold - Royal Coster DiamondsDiamond Bangle 1.12 Carat Brilliant Cut 18K White Gold - Royal Coster Diamonds
Diamanten Bangle 1.12 Karaat Briljant Geslepen 18K Witgoud

Royal Coster Diamonds

€ 4.050€ 3.038
Canals Singel Ring - Royal Coster DiamondsCanals Singel Ring - Royal Coster Diamonds
Canals Singel Ring

Royal Coster Diamonds

€ 1.390€ 1.182
Bespaar: €210Luna Full Moon Earrings - Royal Coster Diamonds
Luna Full Moon Oorbellen

Royal Coster Diamonds

€ 1.400Vanaf € 1.190
Bespaar: €703Tennis Set Bracelet - Royal Coster DiamondsTennis Set Bracelet - Royal Coster Diamonds
Tennis Set Armband

Royal Coster Diamonds

€ 4.690Vanaf € 3.987
Bespaar: €525Tennis Game Earrings - Royal Coster DiamondsTennis Game Earrings - Royal Coster Diamonds
Tennis Game Oorbellen

Royal Coster Diamonds

€ 2.100Vanaf € 1.575
Diamond stud earrings 1.06 carat princess cut square cluster 18K white gold Royal Coster Diamonds 1540579W18
Diamanten Oorknopjes 1.06 Karaat Princess Geslepen 18K Witgoud

Royal Coster Diamonds

€ 3.650€ 2.738
Rainbow Prism Pendant - Royal Coster Diamonds
Rainbow Prism Hanger

Royal Coster Diamonds

€ 1.950€ 1.658
Canals Singel Necklace - Royal Coster DiamondsCanals Singel Necklace - Royal Coster Diamonds
Canals Singel Ketting

Royal Coster Diamonds

€ 2.490€ 2.117
Diamond Ring 0.45 Carat Brilliant Cut 18K Yellow Gold - Royal Coster Diamonds
Diamanten Ring 0.45 Karaat Briljant Geslepen 18K Geelgoud

Royal Coster Diamonds

€ 2.850€ 2.138
Garden Bloom Necklace - Royal Coster DiamondsGarden Bloom Necklace - Royal Coster Diamonds
Garden Bloom Ketting

Royal Coster Diamonds

€ 2.390€ 2.032
Canals Singel Ring - Royal Coster DiamondsCanals Singel Ring - Royal Coster Diamonds
Canals Singel Ring

Royal Coster Diamonds

€ 1.390€ 1.182
Luna Diamond Sky Necklace - Royal Coster Diamonds
Luna Diamond Sky Ketting

Royal Coster Diamonds

€ 1.350€ 1.148
Canals Spiegel Ring - Royal Coster DiamondsCanals Spiegel Ring - Royal Coster Diamonds
Canals Spiegel Ring

Royal Coster Diamonds

€ 2.390€ 2.032
Rainbow Prism Earrings - Royal Coster DiamondsRainbow Prism Earrings - Royal Coster Diamonds
Rainbow Prism Oorbellen

Royal Coster Diamonds

€ 3.850€ 3.273
Diamond Dangle Necklace 0.62 Carat Brilliant Cut 18K White Gold - Royal Coster Diamonds
Diamanten Dangle Ketting 0.62 Karaat Briljant Geslepen 18K Witgoud

Royal Coster Diamonds

€ 3.000€ 2.250

Black Friday 2026: Kortingen tot wel 30%

Echte luxe koopt u niet elke dag. Daarom telt elke keuze. Deze Black Friday krijgt u tot 30% korting op een selectie diamanten sieraden en horloges. Dezelfde kwaliteit. Een scherpere prijs.

 

Waarom Royal Coster Diamonds?

Wij slijpen diamanten sinds 1840. Daarmee zijn wij de oudste nog actieve diamantslijperij ter wereld. In 1852 herslepen onze meesters de Koh-i-Noor voor koningin Victoria. Die kennis zit in elk sieraad. Sinds 2016 dragen wij bovendien het predicaat Koninklijk.

Bij ons kiest u uitsluitend voor natuurlijke diamanten. Onze diamanten zijn conflictvrij, conform het Kimberley-proces. Ze komen met certificaten van GIA, IGI, HRD of Royal Coster zelf. Wij zetten ze in 14 en 18 karaat goud. Stevig genoeg om dagelijks te dragen. Mooi genoeg om door te geven.

 

Van onze slijperij naar uw deur

Bestellen doet u eenvoudig online. Wij verzenden gratis binnen Nederland. Is uw sieraad op voorraad? Dan heeft u het meestal binnen 1 à 2 werkdagen in huis. Elke zending is gratis verzekerd. Uw pakket volgt u met Track & Trace. Na ontvangst heeft u 30 dagen bedenktijd. Betalen doet u veilig met iDEAL, creditcard, Apple Pay of Google Pay.

 

Ontdek de Black Friday collectie

Ringen, oorbellen, kettingen, armbanden en horloges. Van een diamanten hanger tot een tennisarmband in 18 karaat witgoud. Kies uit eigen collecties als Luna, Classics en Canals of Amsterdam.

Zoekt u een cadeau voor de feestdagen? Of verrast u uzelf? Bestel vandaag online. De korting geldt alleen op de Black Friday collectie en tot en met 27 november.

Veelgestelde vragen

Hoeveel korting geeft Royal Coster op Black Friday?

Tijdens Black Friday 2026 geeft Royal Coster Diamonds 30% korting op de Black Friday collectie met sieraden en horloges.

Wanneer wordt mijn sieraad bezorgd?

Artikelen op voorraad ontvangt u binnen Nederland meestal binnen 1 à 2 werkdagen.

Is mijn sieraad verzekerd tijdens de verzending?

Ja. Elke zending is gratis verzekerd. U volgt uw pakket met Track & Trace.

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