Diamond Rings in 18k Gold | Invisible Set, Pie-Cut & Bridal | Trinity Designer Jewel

Every ring in this collection is made to order in our Bangkok atelier — handcrafted in 18-karat gold with natural earth-mined diamonds and precious gemstones. No mass production. No compromise on quality.

Browse our signature styles: pie-cut mosaic diamond rings that deliver a 3 to 4-carat face-up look at a fraction of the solitaire price, invisible set gemstone rings where no metal touches the stone surface, minimalist diamond bands built for daily wear, and bridal stacker rings in marquise, baguette, and round brilliant cuts.

All diamonds are natural — VVS to VS clarity, FG colour. All rings ship free, fully insured, worldwide.

87 products found in Rings

Sort by

4ct emerald cut diamond platinum eternity band three quarter angle step cut diamonds

Emerald Cut Diamond Eternity Band | 4 Carat Total Weight | Platinum

From $6,630.00

Ring

Pie Cut Diamond Double Halo Ring – 1.50 CTW in 18K White Gold

$5,540.40

Ring

Angle view of invisible set natural ruby halo ring showing diamond and ruby contrast

Marquise and Princess Illusion Diamond Ring with Invisible Set Ruby Halo

$2,923.20

Ring

Chic Step Cut Mosaic Pie Cut Diamond Ring Unique Touch for Women's Jewelry

Luxury Pie-Cut Emerald Diamond Geometric Ring with Rubies

$15,360.00

Ring

18kt white gold pie-cut emerald diamond halo ring TR034, 0.70ct pie-cut centre, round brilliant halo, dual split band with baguette channel and pavé, 1.30ct total

18kt Gold Pie-Cut Emerald Diamond Halo Ring with Baguette & Pavé Split Band | 1.30ct Total | TR034

$2,940.00

Ring

Sophisticated Pie Cut Diamond Ring Adorned with Ruby & Diamonds

Baguette Illusion Emerald Diamond Ring with Invisible Set Ruby Halo

$4,080.00

Ring

18kt white gold pie-cut Asscher diamond and invisible set ruby halo ring AR1336, 0.70ct pie-cut diamond Asscher centre with 1.50ct natural ruby invisible halo in octagonal bezel, 0.15ct pavé diamond shoulders, 2.35ct total — Trinity Designer Jewel Bangkok

18kt Gold Pie-Cut Asscher Diamond & Invisible Set Ruby Halo Ring | 2.35ct Total | AR1336

$6,084.00

Ring

Pie Cut Diamond Ring | Diamond Ring | Trinity Designer Jewel

18KT White Gold Baguette Illusion Emerald Diamond Double Halo Ring with Rubies

From $3,614.00

Ring

18KT White Gold Baguette Illusion Emerald Diamond Double Halo Ring
front face up

18KT White Gold Baguette Illusion Emerald Diamond Double Halo Ring

From $3,300.00

Ring

AR1336 Asscher Cut Illusion Ruby & Diamond Ring | 2ct Face-Up | 18kt Gold FRONT VIEW

18KT White Gold Baguette Illusion Asscher Diamond Ring with Invisible Set Ruby Halo

$4,617.60

Ring

18kt white gold diamond illusion double halo ring AR1334, marquise and princess diamonds forming 2ct round face-up centre, invisible set natural ruby inner halo and round brilliant diamond outer halo, 15.7mm head diameter, 1.7mm band — Trinity Designer Jewel Bangkok

18kt White Gold Marquise Princess Diamond Illusion Double Halo Ring with Invisible Set Rubies | 1.45ct Total | AR1334

$3,996.00

Ring

Premium Cluster of Diamonds with Invisible Set Blue Sapphire Ring Jewelry for Women

18KT White Gold Marquise and Princess Illusion Diamond Ring with Invisible Set Sapphire Halo

$3,419.00

Ring

Ruby & Diamond Butterfly Ring 18k Gold | Invisible Set Gemstone Ring | Trinity Designer Jewel Bangkok

18KT White Gold Invisible Setting Ruby Diamond Butterfly Rin

$2,268.00

Ring

18kt white gold pie-cut emerald diamond ring TR028, 0.80ct four-prong pie-cut centre, triple split round brilliant pavé band, 1.10ct total, no halo

18kt Gold Pie-Cut Emerald Diamond Ring with Triple Split Pavé Band | 1.10ct Total | TR028

$4,644.00

Ring

Round Mosaic Diamond Ring with Swirling Calibre Cut Ruby Border

Round Mosaic Diamond Ring with Swirling Calibre Cut Ruby Border

$2,945.60

Ring

18kt white gold pie-cut emerald diamond halo ring TR025, 0.50ct pie-cut centre with octagonal halo, open orbit curved pavé band and straight lower arm, 1.00ct total

18kt Gold Pie-Cut Emerald Diamond Halo Ring with Open Orbit Pavé Band | 1.00ct Total | TR025

$3,930.00

Ring

Angle view of invisible set ruby halo ring with princess cut diamond accents in 18kt gold

18KT Gold Marquise & Princess Illusion Diamond Ring | Invisible Set Ruby Double Halo

$3,516.80

Ring

Luxury Emerald-Shape Pie-Cut Diamond Ring with Baguette Halo

$6,192.00

Ring

18kt white gold pie-cut emerald diamond five-stone ring TR047, 0.80ct pie-cut centre flanked by four prong-set emerald-cut diamonds, 1.60ct total

18kt Gold Pie-Cut Emerald Diamond Five-Stone Ring with Emerald Cut Shoulders | 1.60ct Total | TR047

$4,920.00

Ring

Sophisticated Ruby Halo Pie Cut Diamond Ring Perfect for Women and Girls

Emerald Shape Baguette Illusion Diamond Ring with Calibre Cut Ruby Border and Side Baguettes

$4,680.00

Ring

18kt white gold pie-cut emerald diamond halo ring TR004, 0.50ct pie-cut centre with octagonal round brilliant halo, 0.50ct pavé split band, 1.00ct total

18kt Gold Pie-Cut Emerald Diamond Halo Ring with Split Pavé Band | 1.00ct Total | TR004

$2,580.00

Ring

AR011 ONE CARAT FACE UP PIECUT DIAMOND RING

Baguette Illusion Emerald Diamond Solitaire Engagement Ring

$2,452.80

Ring

18kt white gold pie-cut diamond emerald illusion ring TR042, 0.70ct pie-cut centre, 1.00ct round brilliant pavé on four interwoven open lattice bands, 1.70ct total

18kt Gold Pie-Cut Diamond Emerald Illusion Ring with Cross over Multi-Band Pavé | 1.70ct Total | TR042

$4,430.00

Ring

Baguette Illusion Emerald Diamond Halo Engagement Ring

$2,618.00

Ring

18kt white gold pie-cut emerald diamond ring TR040, 0.50ct six-prong pie-cut centre with horizontal baguette channel shoulders, 0.90ct total, step-cut design

18kt Gold Pie-Cut Emerald Diamond Ring with Baguette Channel Shoulders | 0.90ct Total | TR040

From $2,850.00

Ring

AR1344 Art Deco Diamond & Sapphire Octagonal Ring | 2.20ct Sapphire | 18kt Rose Gold front view

Art Deco Invisible-Set Sapphire and Diamond Mosaic Statement Ring

$5,136.00

Ring

AR1320 — 4ct face-up illusion ring with 1ct pie-cut diamonds and rubies in 18kt gold.

Art Deco Invisible-Set Ruby and Diamond Mosaic Target Ring

$5,433.60

Ring

Luxurious TR067 Round Diamond Illusion Ring

9-Piece Pizza Cut Round Illusion Diamond Halo Engagement Ring

$4,176.00

Ring

18kt white gold toi et moi pie-cut diamond bypass ring TR022, dual 2ct face-up emerald-cut pie-cut diamond clusters with round brilliant pavé halos, 1.60ct total, open bypass band — Trinity Designer Jewel Bangkok

18kt Gold Toi et Moi Pie-Cut Diamond Ring | Dual 2ct Face-Up Emerald Cut | 1.60ct Total | TR022

$4,632.00

Ring

18KT white Gold Two-Stone Baguette Illusion Emerald Cut Diamond Toi et Moi Bezel Bypass Ring on hand view
close up view

18KT Yellow Gold Two-Stone Baguette Illusion Emerald Cut Diamond Toi et Moi Bezel Bypass Ring

$3,300.00

Ring

18KT Gold Slim Baguette Illusion Emerald Diamond Bezel Engagement Ring

18KT Gold Slim Baguette Illusion Emerald Diamond Bezel Engagement Ring

$2,156.00

Ring

Pie-Cut Emerald Diamond Prong Engagement Ring front view

18KT Yellow Gold Pie-Cut Emerald Diamond Prong Engagement Ring

$2,156.00

Ring

1 carat face up piecut diamond ring

18KT Yellow Gold Pie-Cut Emerald Diamond Bezel Engagement Ring

$2,156.00

Ring

TR018: Elegant 18k Emerald Cut Illusion Diamond Ring

18KT Yellow Gold Baguette Illusion Emerald Diamond Pave Engagement Ring

$2,212.00

Ring

18KT Yellow Gold 9-Piece Pizza Cut Round Illusion Diamond Prong set ring close up

18KT Yellow Gold 9-Piece Pizza Cut Round Illusion Diamond Prong set ring

$2,580.00

Ring

18KT Yellow Gold 9-Piece Pizza Cut Round Illusion Diamond Bezel Engagement Ring

18KT Yellow Gold 9-Piece Pizza Cut Round Illusion Diamond Bezel set Ring

$2,670.00

Ring

18kt white gold toi et moi pie-cut diamond bypass ring TR041, dual emerald-cut pie-cut clusters with octagonal round brilliant halos, 1.10ct total, open bypass band

18kt Gold Toi et Moi Pie-Cut Diamond Bypass Ring with Dual Emerald Halo | 1.10ct Total | TR041

$4,776.00

Ring

18kt white gold pie-cut emerald illusion diamond engagement ring with pavé diamond shank

18KT White Gold Pie-Cut Emerald Diamond Pave Engagement Ring

$2,688.00

Ring

18KT White Gold Pie-Cut Emerald Diamond Bezel Prong Engagement Ring

18KT White Gold Pie-Cut Emerald Diamond Bezel Prong Engagement Ring

From $1,946.00

Ring

Toi et Moi Diamond Ring 18k Gold | Two Stone Large Look Diamond Ring | Trinity Designer Jewel Bangkok

18KT White Gold Pie-Cut Emerald Diamond Bezel Engagement Ring

$2,464.00

Ring

Invisible Set Ruby Butterfly Ring 18k Gold | Gemstone Statement Ring | Trinity Designer Jewel Bangkok

18KT White Gold Invisible Setting Blue Sapphire Butterfly Cocktail Ring

$3,801.60

Ring

18kt white gold pie-cut emerald diamond halo ring TR050, 0.50ct pie-cut centre, octagonal round brilliant halo, twist pavé crossing band, 1.00ct total

18kt Gold Pie-Cut Emerald Diamond Halo Ring with Twist Pavé Band | 1.00ct Total | TR050

$2,580.00

Ring

Purple Sapphire Halo on Piecut diamond 18k White Gold | Art Deco 2 Carat Look Ring

Vintage-Inspired Pie-Cut Diamond Illusion Ring with Invisible-Set Violet Sapphire Halo

$3,840.00

Ring

TR057 pie-cut emerald diamond ring with triple-row pavé band in 18kt white gold — 0.70ct centre stone

Pie-Cut Emerald Diamond Ring | 0.70ct Centre | Pavé Band | 18kt White Gold

$5,520.00

Ring

18k White Gold Invisible-Set Ruby Butterfly Statement Ring

18k White Gold Invisible-Set Ruby Butterfly Statement Ring

From $6,480.00

Ring

18k White Gold Emerald illusion Diamond Double Halo Engagement Ring

18k White Gold Emerald illusion Diamond Double Halo Engagement Ring

$5,496.00

Ring

Pie-Cut Diamond Ring with Taper Baguette Shoulders | 0.80ct | 18kt Gold

$4,728.00

Ring

five Stone Round Diamond Anniversary Band- 0.50 cts

five Stone Round Diamond Anniversary Band- 0.50 cts

$1,860.00

Ring