Astra Diamond Ring - Round Lab Diamond

Name: Astra Diamond Ring - Round Lab Diamond
Brand: James & Irisa Jewellery
SKU: JIAST522014KH
Price: 2590.00 AUD
Availability: InStock

AU$2,590.00

Setting Only

Find your ring size

Choosing the right ring size is crucial for comfort and security. Whether you’re buying a ring as a surprise or for yourself, it’s important to get the size right the first time. This guide provides detailed methods to measure your ring size accurately at home, ensuring you find the perfect fit.

Manual Measurement Using String or Paper

Step 1: Gather Your Tools

A piece of non-stretchy string or a thin strip of paper
A ruler with millimeter (mm) markings
A fine-tip marker or pen

Step 2: Measure Your Finger

Wrap the String or Paper Around Your Finger: Ensure it fits snugly but isn’t too tight.
Mark the Overlap Point: Use a marker to indicate where the string or paper overlaps.
Measure the Length: Lay the string or paper flat and use a ruler to measure the distance from the start to the marked point.

Step 3: Find Your Ring Size Using the Chart Below

Use your finger’s circumference measurement to determine your ring size from the chart:

Inside Diameter (mm)	Inside Circumference (mm)	AU/UK Size	US/CA Size
13.1	41.1	D	-
13.3	41.7	D 1/2	2
13.5	42.4	E	-
13.7	43.0	E 1/2	2.5
13.9	43.6	F	-
14.1	44.2	F 1/2	3
14.3	44.9	G	-
14.5	45.5	G 1/2	3.5
14.7	46.1	H	-
14.9	46.8	H 1/2	4
15.1	47.4	I	-
15.3	48.0	I 1/2	4.5
15.5	48.6	J	-
15.7	49.3	J 1/2	5
15.9	49.9	K	-
16.1	50.5	K 1/2	5.5
16.3	51.2	L	-
16.5	51.8	L 1/2	6
16.7	52.4	M	-
16.9	53.0	M 1/2	6.5
17.1	53.7	N	-
17.3	54.3	N 1/2	7
17.5	54.9	O	-
17.7	55.6	O 1/2	7.5
17.9	56.2	P	-
18.1	56.8	P 1/2	8
18.3	57.4	Q	-
18.5	58.1	Q 1/2	8.5
18.8	59.0	R	-
19.0	59.6	R 1/2	9
19.2	60.3	S	-
19.4	60.9	S 1/2	9.5
19.6	61.5	T	-
19.8	62.2	T 1/2	10
20.0	62.8	U	-
20.2	63.4	U 1/2	10.5
20.4	64.0	V	-
20.6	64.7	V 1/2	11
20.8	65.3	W	-
21.0	65.9	W 1/2	11.5
21.2	66.6	X	-
21.4	67.2	X 1/2	12
21.6	67.8	Y	-
21.8	68.4	Y 1/2	12.5
22.0	69.1	Z	-
22.2	69.7	Z 1/2	13
22.4	70.3	Z+1	-
22.6	71.0	Z+1 1/2	13.5
22.8	71.6	Z+2	-

Additional Tips for Accurate Sizing

Measure at the Right Time: Your fingers can change size throughout the day. Measure your finger at the end of the day when your fingers are at their largest to ensure the best fit.
Consider Knuckle Size: If your knuckle is larger than the base of your finger, you may need to size up. Measure both your knuckle and the base, then choose a size that fits comfortably over your knuckle.
Double-Check: It’s a good idea to measure multiple times to ensure accuracy.

Why Accurate Sizing Matters

Getting the correct ring size ensures that your ring is comfortable to wear and stays securely on your finger. A ring that’s too tight can be uncomfortable and difficult to remove, while a ring that’s too loose may slip off and get lost. By following these methods, you can confidently determine your ring size at home and ensure your new ring fits perfectly.

Still Have Questions?

At James and Irisa Jewellery, we’re here to help with any additional questions you may have. If you’re uncertain about your measurements or need more personalized advice, please feel free to reach out. We’re committed to ensuring you find the perfect fit for your jewellery.

Contact us today for expert advice and to explore our collection of beautiful, perfectly fitting rings.

Choose This Setting & Add Diamond

Description Description

The Astra Diamond Ring is a refined fusion of vintage charm and cosmic inspiration. At its centre is a brilliant round diamond, flanked by elegantly pear white diamonds that echo the geometry of the Art Deco era. Set in our signature meteorite-textured setting, the design captures both softness and structure — a balance of classic form and modern artistry.

Whether chosen for an engagement or a meaningful moment, Astra is a radiant symbol of connection, individuality, and timeless light.

*** Each ring is individually hand-textured, meaning no two are ever exactly the same — every piece is truly one of a kind.

Materials Materials

Centre diamond: Round brilliant cut lab grown white diamond

Side diamonds: 2pcs of 3x2mm pear and 2pcs of 1.5mm round Lab grown white diamond, DEF colour, VS clarity, total Approx. 0.13ct

Band: Approx.1.5mm knife edge band

*** The ring featured in the image is showing a 1ct centre diamond.

Made to order engagement ring and delivery Made to order engagement ring and delivery

This is a made to order item. Please allow around 7 weeks to finish.

Free express shipping for all domestic orders.

The standard or express shipping option is upon customers' choice at checkout for international orders, which cost is calculated at checkout.

For more shipping information, please refer to our shipping policy.

Diamond Jewellery Care Diamond Jewellery Care

All natural and lab diamonds used in James and Irisa jewellery are hand picked with highest quality in the class.

However, to keep your diamond jewellery looking its best for years to come, we recommend avoiding prolonged exposure to chemical compounds such as detergents, shampoos, body wash, cleaning agents, and other household chemicals.

If your diamond jewellery comes into contact with any of these chemicals, simply rinse it gently with clean, warm water and pat it dry with a soft, lint-free cloth. This will help maintain its sparkle and overall condition

Ethically sourced materials

Worldwide shipping

Expertly crafted in Melbourne

Matched wedding band

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Astra Diamond Ring - Round Lab Diamond

Matched wedding band

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