The story

Coates began with a desire to combine traditional character and modern refinement, a ring rooted in heritage, with a distinctive green accent that carries quiet confidence.

At its heart sits an old-mine-cut diamond, chosen for its softly rounded profile and warm glow, a shape that evokes vintage charm and history. Surrounding it, a circle of green tsavorite garnets, precisely set in a rub-over style, introduces a calm pop of colour, a subtle but striking balance between classic diamond grace and natural gemstone individuality.

The finish in 18K yellow gold deepens that sense of warmth and enduring craftsmanship. Coates is a ring that feels both personal and timeless: rooted in tradition, yet unique in its expression.

Design details

From your photos and spec line, Coates features:

• Old-mine-cut centre diamond
  A softly faceted, gently rounded diamond, a cut with history, bringing warmth and character rather than overt brilliance.

• Tsavorite garnet halo
  A close-set circle of rich green tsavorite, precision-cut and rub-over set, offering contrast in tone and a discreet yet arresting colour accent.

• 18K yellow gold setting
  Warm, glowing and complementary to both diamond and tsavorite, reinforcing a sense of heritage and subtle luxury.

• Rub-over (bezel-style) setting for halo
  A secure, smooth setting that maintains clean lines and emphasizes gemstone colour rather than metal.

• Milgrain detailing & elegant basket
  Fine milgrain edges and a refined basket structure beneath the ring elevate the piece with craftsmanship and subtle decorative interest, without detracting from the stones.

Craftsmanship

Coates is a study in careful balance and discreet detailing:

• The old-mine diamond is centred and seated to preserve its shape and vintage character, ensuring the girdle sits level and the facets align softly.

• The tsavorite halo is hand-cut and each gemstone is measured and set individually, spaced and flush-set to create a uniform, continuous circle of green around the diamond.

• The rub-over setting and milgrain edging are finished under magnification, yielding smooth edges and a tactile, understated texture.

• The 18K yellow gold band and basket are carved and polished by hand, achieving a warm, soft lustre and a comfortable fit that feels timeless and secure.

The result is a ring where every detail, cut, colour, setting, serves the whole. Nothing is loud; everything is quiet, intentional, refined.

Why Coates stands out

• Warm vintage character: the old-mine-cut diamond delivers a soft, historic tone rather than flash, ideal for those drawn to subtlety over show.

• Colour contrast and subtlety: the tsavorite halo introduces personality and depth, without overwhelming, a green whisper around a classic centre.

• Material harmony: yellow gold, green tsavorite and soft-cut diamond, a harmonious trio that feels natural, grounded and elegant.

• Craft-led restraint: fine milgrain, rub-over setting and hand finishing, details that speak to care, longevity and quiet luxury.