“A Hidden Touch of Brilliance”
A Hidden Touch of Brilliance
Luméra reveals its beauty in the details. A 1.00 carat round brilliant lab-grown diamond takes center stage in an elegant solitaire silhouette, while a delicate 0.13 carat hidden halo rests discreetly beneath it. Almost invisible from above, the hidden diamonds reveal an unexpected glow from the side. The result is a necklace that appears beautifully simple at first glance and…
Craftsmanship You Can Feel
Every diamond is chosen by eye for its cut, fire and brilliance. Our lab-grown diamonds are real diamonds, chemically and optically identical to mined stones, and IGI certified.
Each piece is cast in solid 14K white or yellow gold and finished after you order it, so it is made for you rather than taken from a shelf.
Each pendant is shaped and weighted to rest centered at the neckline, with the diamond facing forward.
Commitment to Excellence
Discover the diamonds, the craft and the people behind every Alessa piece.
Our Story
A modern jewelry house built on honesty, exceptional value and pieces made to be worn for a lifetime.
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Design & Craftsmanship
Every Alessa design is drawn in-house, cast in solid 14K gold and finished by hand.
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Lab-Grown Diamonds
Real diamonds, grown responsibly and graded independently, with the same fire and brilliance as mined stones.
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360° View
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Ring Sizing Guide
Every Alessa ring is made to order in your size. Use one of the two methods below, then find your size in the chart.
- Choose a ring that fits well on the finger you are buying for.
- Place it on a ruler and measure the inside diameter, from inner edge to inner edge, in millimetres.
- Find the closest diameter in the chart below to see your size.
- Wrap a thin strip of paper or string around the base of your finger.
- Mark the point where it overlaps, then lay it flat and measure the length in millimetres.
- That length is your finger circumference. Find the closest match in the chart below.
Tip: measure at the end of the day when your fingers are warm, and make sure the ring can pass over your knuckle.
| Circumference (mm) | Diameter (mm) | UK, Europe & Australia | USA & Canada | China | SG / JP | HK | Switzerland |
|---|---|---|---|---|---|---|---|
| 44.2 | 14.1 | F½ | 3 | 6 | 4 | 6 | 4 |
| 44.8 | 14.3 | G | 5 | 5¼ | |||
| 45.5 | 14.5 | G½ | 3½ | 7 | 7.5 | ||
| 46.1 | 14.7 | H | 6 | 6½ | |||
| 46.8 | 14.9 | H½ | 4 | 8 | 7 | 9 | |
| 47.4 | 15.1 | I | 9 | 7¾ | |||
| 48.0 | 15.3 | I½ | 4½ | 8 | 10 | ||
| 48.7 | 15.5 | J | 9 | ||||
| 49.3 | 15.7 | J½ | 5 | 10 | 9 | 11 | |
| 50.0 | 15.9 | K | 10 | ||||
| 50.6 | 16.1 | K½ | 5½ | 11 | 10 | 12 | |
| 51.2 | 16.3 | L | 11¾ | ||||
| 51.9 | 16.5 | L½ | 6 | 12 | 11 | 13 | 12¾ |
| 52.5 | 16.7 | M | 13 | 12 | |||
| 53.1 | 16.9 | M½ | 6½ | 13 | 14.5 | 14 | |
| 53.8 | 17.1 | N | 14 | ||||
| 54.4 | 17.3 | N½ | 7 | 14 | 16 | 15¼ | |
| 55.1 | 17.5 | O | 15 | ||||
| 55.7 | 17.7 | O½ | 7½ | 15 | 17 | 16½ | |
| 56.3 | 17.9 | P | 16 | ||||
| 57.0 | 18.1 | P½ | 8 | 17 | 16 | 17¾ | |
| 57.2 | 18.2 | 18 | |||||
| 57.6 | 18.3 | Q | |||||
| 58.3 | 18.5 | Q½ | 8½ | 18 | 17 | 19 | |
| 58.9 | 18.8 | R | 19 | ||||
| 59.5 | 19.0 | R½ | 9 | 19 | 18 | 20.5 | |
| 60.2 | 19.2 | S | 20 | 20¼ | |||
| 60.8 | 19.4 | S½ | 9½ | 19 | 22 | ||
| 61.4 | 19.6 | T | 21 | 21½ | |||
| 62.1 | 19.8 | T½ | 10 | 20 | 23 | ||
| 62.7 | 20.0 | U | 22 | 21 | |||
| 63.4 | 20.2 | U½ | 10½ | 22 | 24 | 22¾ | |
| 64.0 | 20.4 | V | 23 | ||||
| 64.6 | 20.6 | V½ | 11 | 23 | 25 | ||
| 65.3 | 20.8 | W | 24 | 25 | |||
| 65.9 | 21.0 | W½ | 11½ | 25 | 24 | 26 | |
| 66.6 | 21.2 | X | |||||
| 67.2 | 21.4 | X½ | 12 | 26 | 25 | 27.75 | 27½ |
| 67.8 | 21.6 | Y | |||||
| 68.5 | 21.8 | Z | 12½ | 26 | 28¾ | ||
| 69.1 | 22.0 | Z½ | |||||
| 69.7 | 22.2 | 13 | 27 | 30 | |||
| 70.4 | 22.4 | Z+1 |
Between two sizes? Choose the larger one. Wide bands sit more snugly, so consider going up half a size.
Still unsure? Book an appointment and we will help you find your fit.