Explore 18ct diamond gemstone rings at Watchmax in yellow, white and rose gold. From sapphire, emerald and ruby to morganite and tanzanite, discover solitaire, halo, trilogy and vintage-inspired designs crafted for lasting brilliance. Free UK delivery.
18ct White Gold 0.15ct Diamond with 1.50ct Sapphire Ring
£1,685.00
This exquisite 1.50ct deep blue sapphire ring is a true testament to elegance, flanked by 0.15ct of round diamonds and set on a polished 9ct white gold band. The unique floral shape of the diamond cluster adds a distinctive touch, making this ring a special piece for a loved one. This jewellery item is assay assured with a full British Hallmark certifying its gold purity.
- Metal: 18ct Gold
- Diamond Weight: 0.15ct
- Cut: Brilliant
- Carat (TCW): 0.15ct
- Colour: G/H
- Clarity: Si
- Gemstone: Sapphire
- Gemstone Cut: Emerald
- Gemstone Carat (TCW): 1.50ct
- Gemstone Size: 5.0 x 7.0mm
- Centre Stone Size (ct): 7 Brilliant stones per cluster
18ct White Gold 0.35ct Halo Diamond with 1.40ct Sapphire Ring
£2,090.00
A striking 1.40ct sapphire stone framed by 0.35ct diamonds enhances the deep blue hue. Set on an 18ct white gold band, this ring is a modern classic. This item complies with assay assured and has a full British Hallmark verifying its authenticity and gold purity.
- Metal: 18ct Gold
- Diamond Weight: 0.35ct
- Cut: Brilliant
- Carat (TCW): 0.35ct
- Colour: G/H
- Clarity: Si
- Gemstone: Sapphire
- Gemstone Cut: Oval
- Gemstone Carat (TCW): 1.40ct
- Head Size: 12.0 x 10.5mm
- Band Width: 1.7mm
- Gemstone Size: 6.0 x 7.7mm
18ct White Gold 0.60ct Diamond with 0.90ct 7x5mm Oval Ruby Ring
£2,100.00
This stunning 18ct white gold ring features a 0.90ct (7x5mm) oval ruby at its center, surrounded by a halo of 0.60ct round brilliant-cut diamonds, with additional diamonds adorning the shoulders. This design creates a breathtaking sparkle that elevates the ring’s overall appeal. This piece carries an assay assured stamp and a full British Hallmark to verify its gold purity.
- Metal: 18ct Gold
- Gemstone: Ruby
- Diamond Weight: 0.6ct
- Cut: Brilliant
- Carat (TCW): 0.60ct
- Head Size: 12.3 x 13.8mm
- Gemstone Size: 5.2 x 7.0mm
24% Off
18ct White Gold 0.60ct Diamond with Oval Shape 1.0ct Blue Sapphire Ring
£2,290.00
This sophisticated white gold ring features a blue oval sapphire surrounded by 0.60 carats of dazzling diamonds. Crafted from 18-carat white gold, the ring offers a stunning sparkle, making it a perfect gift for special occasions. This item meets assay assured standards and comes with a full British Hallmark, guaranteeing the purity of both the gold and diamonds.
- Metal: 18ct Gold
- Cut: Brilliant
- Carat (TCW): 0.60ct
- Colour: G/H
- Clarity: Si
- Gemstone: Emerald
- Gemstone Cut: Oval
- Gemstone Carat (TCW): 1.0ct
- Head Size: 12.3 x 13.8mm
- Gemstone Size: 5.2 x 7.0mm
38% Off
18ct White Gold 2.00ct Aqua & 0.10ct Diamond Ring
£1,465.00
Showcasing the classic allure of a platinum solitaire ring, this piece is crafted in 18ct white gold and features a stunning 2.00ct aqua stone accompanied by a 0.10ct diamond. A design that remains timelessly elegant. This item complies with assay assured and has a full British Hallmark verifying its authenticity and gold purity.
- Metal: 18ct Gold
- Diamond Weight: 0.1ct
- Cut: Brilliant
- Carat (TCW): 0.10ct
- Colour: G/H
- Clarity: Si
- Gemstone: Aquamarine
- Gemstone Cut: Octagon
- Gemstone Carat (TCW): 2.00ct
- Head Size: 8.8 x 10.2mm
- Band Width: 1.5mm (second band)
- Gemstone Size: 5.8 x 8.0mm
22% Off
18ct Yellow Gold 0.15ct Diamond Stone and 0.80ct Ruby Eternity Ring
£1,830.00
Finely crafted from 18-carat yellow gold, this yellow gold eternity ring features 0.15 carats of diamonds and 0.80 carats of ruby stones, symbolizing everlasting love. It is a beautiful gift for a special occasion and complies with assay assured standards, carrying a full British Hallmark to confirm the purity of the gold and diamonds.
- Metal: 18ct Gold
- Cut: Brilliant
- Carat (TCW): 0.15ct
- Colour: G/H
- Clarity: Si
- Gemstone: Ruby
- Gemstone Cut: Brilliant
- Gemstone Carat (TCW): 0.80ct
- Top Width: 4.5mm
- Back Width: 3.3mm
36% Off
18ct Yellow Gold 0.15ct Diamond with 0.70ct Emerald Eternity Stone Ring
£1,830.00
This 18-carat yellow gold eternity ring showcases 0.15 carats of sparkling diamonds and 0.70 carats of emerald stones, beautifully set on the band. A perfect gift to complement any special occasion, this item meets assay assured standards and is hallmarked with a full British certification, guaranteeing the purity of both the gold and diamonds.
- Metal: 18ct Gold
- Cut: Brilliant
- Carat (TCW): 0.10ct
- Colour: G/H
- Clarity: Si
- Gemstone: Emerald
- Gemstone Cut: Brilliant
- Gemstone Carat (TCW): 0.50ct
41% Off
18ct Yellow Gold 0.36ct Diamond Stone with 0.80ct Blue Sapphire Cluster Ring
£1,925.00
This stunning yellow gold ring features a diamond and blue sapphire cluster, crafted from 18-carat yellow gold with 0.36 carats of diamonds and a central 0.80 carat blue sapphire cluster. Whether worn alone or as a complement to other jewellery, this ring makes a striking statement. It meets assay assured standards and includes a full British Hallmark, guaranteeing the purity of the gold and diamonds.
- Metal: 18ct Gold
- Cut: Brilliant
- Carat (TCW): 0.40ct
- Colour: G/H
- Clarity: Si
- Gemstone: Sapphire
- Gemstone Cut: Oval
- Gemstone Carat (TCW): 0.90ct
- Head Size: 13.0 x 11.2mm
- Gemstone Size: 5.0 x 6.5mm
48% Off
18ct Yellow Gold 0.36ct Diamond Stones with 0.90ct Blue Sapphire Cluster Ring
£2,110.00
This exquisite yellow gold ring, featuring diamonds and a blue sapphire cluster, adds extra sparkle when worn. Handcrafted from 18-carat yellow gold, it includes 0.36 carats of diamonds and a central 0.90 carat blue sapphire cluster. An ideal gift for a special occasion, this item meets assay assured standards and is hallmarked with a full British certification, confirming the purity of the gold and diamonds.
- Metal: 18ct Gold
- Cut: Brilliant
- Carat (TCW): 0.36ct
- Colour: G/H
- Clarity: Si
- Gemstone: Sapphire
- Gemstone Cut: Oval
- Gemstone Carat (TCW): 0.90ct
- Head Size: 12.0 x 10.6mm
- Gemstone Size: 5.3 x 6.6mm
38% Off
18ct Yellow Gold 0.36ct Diamond with 0.90ct Ruby Cluster Ring
£2,110.00
This beautifully designed yellow gold ring features a ruby cluster gemstone surrounded by diamonds, creating an extraordinary look. Made from premium 18-carat yellow gold, it includes 0.36 carats of diamonds and a 0.90 carat ruby cluster at the centre. Ideal for gifting on special occasions, this ring meets assay assured standards and carries a full British Hallmark, ensuring the purity of both the gold and diamonds.
- Metal: 18ct Gold
- Cut: Brilliant
- Carat (TCW): 0.36ct
- Colour: G/H
- Clarity: Si
- Gemstone: Ruby
- Gemstone Cut: Oval
- Gemstone Carat (TCW): 0.90ct
- Head Size: 12.0 x 10.6mm
- Gemstone Size: 5.5 x 6.6mm
36% Off
18ct Yellow Gold 0.3ct Diamond Stone & 0.75ct Emerald Cluster Stone Ring
£2,110.00
This luxurious yellow gold ring with diamonds and an emerald cluster stone is crafted from 18-carat yellow gold, featuring 0.3 carats of diamonds and a striking emerald cluster at its centre. Its sparkling design makes it a beautiful gift for a loved one. The ring complies with assay assured standards and is marked with a full British Hallmark, confirming the purity of the gold and diamonds.
- Metal: 18ct Gold
- Cut: Brilliant
- Carat (TCW): 0.30ct
- Colour: G/H
- Clarity: Si
- Gemstone: Emerald
- Gemstone Cut: Oval
- Gemstone Carat (TCW): 0.75ct
- Head Size: 12.0 x 10.6mm
- Gemstone Size: 5.5 x 6.6mm
42% Off
9ct White Gold 0.30ct Double Halo Diamond 0.60ct Emerald Cut Sapphire Ring
£1,425.00
This 0.60ct emerald cut sapphire diamond ring exemplifies pure elegance, featuring 0.30ct of round diamonds set in highly polished 9ct white gold. A piece that stands out for its beauty. This item complies with assay assured and has a full British Hallmark verifying its authenticity and gold purity.
- Metal: 9ct Gold
- Diamond Weight: 0.3ct
- Cut: Brilliant
- Carat (TCW): 0.30ct
- Colour: G/H
- Clarity: Si
- Gemstone: Sapphire
- Gemstone Cut: Octagon
- Gemstone Carat (TCW): 0.60ct
- Head Size: 9.0 x 10.6mm
- Gemstone Size: 4.0 x 6.0mm
