Name: Round Sapphire Solitaire Engagement Ring
Brand: Birks
SKU: NSTR-SAPPH-PL
Availability: InStock

About
Shipping & Returns

Like the North Star that shines unwavering in the night sky, this ring is a symbol of constant love and guidance. At its heart lies a deep blue sapphire — a gemstone long cherished for its connection to truth, devotion, and destiny. It’s a quiet promise, a luminous reminder that no matter where life leads, love will always find its way home.

Platinum, matching band - plain. More ring sizes, metal options and carat weights available upon special order. Contact us for more information.

Product Information

Details

Product Number: NSTR-SAPPH-PL
Style: Solitaire
Center Stone Shape: Round
Primary Stone: Sapphire
Collection: Birks North Star®
Material: Platinum

SHIPPING

All purchases arrive in a complimentary signature Birks Blue Box ®. To ensure the satisfaction of parcel reception, all our packages require a signature upon delivery.

Enjoy free standard shipping within Canada. To ensure the satisfaction of parcel reception, all our packages require signature upon delivery. The estimated delivery time is 2 to 5 days business days.

For orders outside Canada, contact our Client Services team at info@birks.com. Please provide your name, billing and shipping addresses, phone number, as well as the item you would like to buy and its size (if applicable). For more information, click here.

EXTENDED HOLIDAY RETURN POLICY

For all regular-priced merchandise purchased online at MaisonBirks.com or in a Maison Birks or Birks Royalmount store from December 1^st - 13^th, 2025, returns and exchanges will be accepted until January 14th, 2026.

RETURNS

Maison Birks will provide an exchange or refund within 30 days of delivery for select regular-priced merchandise, provided merchandise has not been worn, altered, engraved, or special-ordered. All claims, returns, battery replacement, or warranty service must be accompanied by proof of purchase, original packaging and warranty materials. All returns are subject to a quality inspection to ensure the merchandise meets our return policy criteria. All merchandise purchased with cryptocurrency is final sale. For more information, click here.

Birks North Star ^®

Round Sapphire Solitaire Engagement Ring

Starting at:

$ 9,500

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Metal: Platinum

Select Diamond

Filters

Cut:

All Birks diamonds are excellent cut

Carat Weight: 0.20 - 5.00

0.20 5.00

Price Range: $1,500 - $100,000+

$1,500 $100,000+

Color:

Clarity:

Select a Diamond Filter

Carat	Colour	Clarity	Availability
16 Results
1.37	Blue	Not applicable	In Stock
1.29	Blue	Not applicable	In Stock
1.35	Blue	Not applicable	In Stock
1.53	Blue	Not applicable	In Stock
1.42	Blue	Not applicable	In Stock
1.64	Blue	Not applicable	In Stock
1.52	Blue	Not applicable	In Stock
1.56	Blue	Not applicable	In Stock
1.43	Blue	Not applicable	In Stock
1.41	Blue	Not applicable	In Stock
1.48	Blue	Not applicable	In Stock
1.26	Blue	Not applicable	In Stock
1.37	Blue	Not applicable	In Stock
1.25	Blue	Not applicable	In Stock
1.69	Blue	Not applicable	In Stock
1.48	Blue	Not applicable	In Stock

Need Help? We can help craft your perfect ring. Contact an Expert

Estimated Price:

Ring Size Guide

Find Your Perfect Size

Measure an existing ring

Find a ring that already fits your finger well.
Measure the interior diameter of the ring in millimetres.
Use the measurement chart to match the size of your ring to the closest size in millimetres.

Please see our ring sizing tips below for things to consider.

Sizing Chart

*Note: All measurements are in millimetres.

Diameter	US	UK	European
14.90	4.0	H 1/2	47.00
15.30	4.5	I 1/2	48.00
15.69	5.0	J 1/2	49.50
16.09	5.5	K 1/2	51.00
16.49	6.0	L 1/2	52.00
16.89	6.5	M 1/2	53.00
17.29	7.0	N 1/2	54.50
17.68	7.5	O 1/2	56.00
18.08	8.0	P 1/2	57.00
18.48	8.5	Q 1/2	58.00
18.88	9.0	R 1/2	60.00
19.28	9.5	S 1/2	61.00
19.67	10.00	T 1/2	62.00
20.07	10.50	U 1/2	63.50
20.47	11.00	V 1/2	65.00
20.87	11.50	W 1/2	66.00
21.27	12.00	X 1/2	67.00

Ring Sizing Tips

Selecting a larger size

Your finger size changes throughout the day, so it’s always best to choose a ring that’s a bit larger rather than too small.
If you wish to vary the hand on which you’ll wear the ring, choose the ring size of the largest finger you’ll be wearing the ring on.

Stackable rings

When buying multiple stackable rings, select one full size up from your typical size, as you'll be more comfortable wearing them together (e.g. if you're typically a size 6, consider a size 7).

Wide shark rings

Order one size up from your normal ring size, as this ring will take up more surface area on your finger (e.g. if you're typically a size 6, consider a size 7).

Our jewellery experts are always here to help, contact us via chat, info@birks.com or +1 (855) 873-7373.

Find Your Perfect Size

The hands-on method

Wrap a tape measure, length of string or strip of paper around the finger you'll wear your ring on.
With a pen or pencil, mark where the strip meets itself. Make sure the paper or string is evenly overlapped.
Measure the length of the string or paper in millimetres.

Please see our ring sizing tips below for things to consider.

Sizing Chart

*Note: All measurements are in millimeters.

Circumference	US	UK	European
46.81	4.0	H 1/2	47.00
48.07	4.5	I 1/2	48.00
49.29	5.0	J 1/2	49.50
50.55	5.5	K 1/2	51.00
51.80	6.0	L 1/2	52.00
53.06	6.5	M 1/2	53.00
54.32	7.0	N 1/2	54.50
55.54	7.5	O 1/2	56.00
56.80	8.0	P 1/2	57.00
58.06	8.5	Q 1/2	58.00
59.31	9.0	R 1/2	56.00
60.57	9.5	S 1/2	61.00
61.80	10.00	T 1/2	62.00
63.05	10.50	U 1/2	63.00
64.31	11.00	V 1/2	65.00
65.57	11.50	W 1/2	66.00
66.82	12.00	X 1/2	67.00

Ring Sizing Tips

Selecting a larger size

Your finger size changes throughout the day, so it’s always best to choose a ring that’s a bit larger rather than too small. If you wish to vary the hand on which you’ll wear the ring, choose the ring size of the largest finger you’ll be wearing the ring on.

Stackable rings

When buying multiple stackable rings, select one full size up from your typical size, as you'll be more comfortable wearing them together (e.g. if you're typically a size 6, consider a size 7).

Wide shark rings

Order one size up from your normal ring size, as this ring will take up more surface area on your finger (e.g. if you're typically a size 6, consider a size 7).

Our jewellery experts are always here to help, contact us via chat, info@birks.com or +1 (855) 873-7373.

Financing Available with .* Apply Apply

Book an Appointment

All images shown are for illustration purposes only. Actual product may vary. Birks reserves the right to change the font, size and text orientation depending on the engraving message for best result.

Please note the estimated time for our engraving services is 7 to 10 business days. Engraved items are final sale.

The Birks jewellery guarantee ensures that your beautiful pieces are protected and maintained to the highest possible standards, so you can enjoy it for years to come. Learn more.

Platinum, matching band - plain. More ring sizes, metal options and carat weights available upon special order. Contact us for more information.

Product Information

Details

Product Number: NSTR-SAPPH-PL
Style: Solitaire
Center Stone Shape: Round
Primary Stone: Sapphire
Collection: Birks North Star®
Material: Platinum

SHIPPING

All purchases arrive in a complimentary signature Birks Blue Box ®. To ensure the satisfaction of parcel reception, all our packages require a signature upon delivery.

Enjoy free standard shipping within Canada. To ensure the satisfaction of parcel reception, all our packages require signature upon delivery. The estimated delivery time is 2 to 5 days business days.

EXTENDED HOLIDAY RETURN POLICY

RETURNS

About
Shipping & Returns

Platinum, matching band - plain. More ring sizes, metal options and carat weights available upon special order. Contact us for more information.

Product Information

Details

Product Number: NSTR-SAPPH-PL
Style: Solitaire
Center Stone Shape: Round
Primary Stone: Sapphire
Collection: Birks North Star®
Material: Platinum

SHIPPING

All purchases arrive in a complimentary signature Birks Blue Box ®. To ensure the satisfaction of parcel reception, all our packages require a signature upon delivery.

Enjoy free standard shipping within Canada. To ensure the satisfaction of parcel reception, all our packages require signature upon delivery. The estimated delivery time is 2 to 5 days business days.

EXTENDED HOLIDAY RETURN POLICY

RETURNS

Birks North Star ^®

Birks Round Sapphire Solitaire Engagement Ring

Round Sapphire Solitaire Engagement Ring

Contact an Expert

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Product Images

Birks North Star ®

Birks Round Sapphire Solitaire Engagement Ring

Round Sapphire Solitaire Engagement Ring

Contact an Expert

Birks North Star ^®