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Ring Size Chart
Find your ring size with our international size guide. Our Azura Jewelry sizes match standard USA/CAN sizes. If you don't know your size but have a ring to measure, click "Measure Ring".
Measure your existing ring as described below.

Unsure if the size will fit?
No worries. We offer free domestic exchanges on all orders.
INSIDE DIAMETER | US/CAN | UK/AU | EUROPE | JAPAN |
---|---|---|---|---|
15 mm | 4 | H | 46.5 | 7 |
15.3 mm | 4.5 | I | 48 | 8 |
15.6 mm | 5 | J | 49.5 | 9 |
16.2 mm | 5.5 | K | 50.5 | 10 |
16.6 mm | 6 | L | 52 | 11 |
16.9 mm | 6.5 | M | 53 | 13 |
17.2 mm | 7 | N | 54.5 | 14 |
17.8 mm | 7.5 | O | 55.5 | 15 |
18.1 mm | 8 | P | 57 | 16 |
18.5 mm | 8.5 | Q | 58 | 17 |
19.1 mm | 9 | R | 59.5 | 18 |
19.4 mm | 9.5 | S | 61 | 19 |
19.7 mm | 10 | T | 62 | 20 |
20.4 mm | 10.5 | U | 63.5 | 22 |
20.7 mm | 11 | V | 64.5 | 23 |

1.Select an existing ring that fits the desired finger.
2.Measure the internal diameter of the ring (in mm).
3.Use the below chart to determine your ring size.
Internal Diameter (MM) | USA & Canada | Adjustable Rings |
---|---|---|
15 | 4 | S |
15.3 | 4.5 | S |
15.6 | 5 | S |
16.2 | 5.5 | S |
16.6 | 6 | M |
16.9 | 6.5 | M |
17.2 | 7 | M |
17.8 | 7.5 | M |
18.1 | 8 | M |
18.5 | 8.5 | L |
19.1 | 9 | L |
19.4 | 9.5 | L |
19.7 | 10 | L |
20.4 | 10.5 | L |
20.7 | 11 | L |
Still not sure how to measure your ring?
No worries, we got you covered!
Check Our Ring Sizer Page.
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Handpicked Gemstone
Description
The Luna Twilight London Blue Topaz Ring is a celestial jewel that carries the promise of a love as boundless as the night sky and as radiant as starlight.
At its heart glows a brilliant natural round London blue topaz, a gemstone beloved for its rich, velvety hue that mirrors the color of the sky and sea.
A crescent moon of sparkling white stones gently cradles the center, symbolizing cycles, dreams, and transformation. Delicate detailing along the band evokes constellations and stardust, making this an enchanting choice for those who follow their light.
Whether worn as a symbolic promise ring, an alternative engagement ring, or a November birthstone ring, the Luna Twilight London Blue Topaz Ring is a timeless gift of love, as infinite as the heavens and as luminous as the moon’s crown.
✨ Details:
✦ 5.5mm natural round-cut London Blue Topaz (center stone)
✦ White topaz (vermeil) or moissanite (solid gold) accent stones
✦ Available in 14K white gold vermeil (14K white gold plated over a sterling silver base) and 10K solid white gold
✦ Intricate sculpted crescent moon
✦ Hypoallergenic and nickel-free
Gemstones
London Blue Topaz
Origin: Brazil
Birthstone: November
Meaning: The name “Topaz” comes from the word “Topazos,” meaning “to seek.” This gem is called “Topaz” because of the strange Tapozios Island in the Red Sea where these gemstones were found.
Powers: A stone of mental clarity and particularly useful for folks who want to awaken their hidden creativity. It encourages the owner to take a step forward and realize their potential and ceases the fear of speaking in public. It connects to the spiritual realm, cleanses your mind from negativity, and brings calm.
Measurements
Vermeil:
✦ Center Stone: 5.5mm round London Blue Topaz
✦ Accent Stone: 0.8-1.8mm round White Topaz
Solid Gold:
✦ Center Stone: 5.5mm round London Blue Topaz
✦ Accent Stone: 0.8-1.8mm round Moissanite
Complete the look:
Luna Twilight London Blue Topaz Ring
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Shipping was surprisingly fast, quality of product is fantastic. Very happy with purchase!
