Round Blue Spinel Half Eternity Ring

Name: Round Blue Spinel Half Eternity Ring
Brand: Ministry of Gems
SKU: L147643
Price: 1750.0 AUD
Availability: InStock

$1,750

Metal type

Metal colour

Made to order in your size, at the price shown and as pictured. Prefer this design in another metal type or colour? Every piece we make is bespoke, made to order in our own workshop — choose above and request a written quotation.

Size

Choose your ring size to continue · Ring size guide

Made to order in your size in our own workshop, most rings in 2–4 weeks · free insured delivery Australia-wide, signature on delivery · free insured delivery Australia-wide, signature on delivery

DeliveryFree insured shipping Australia-wideSignature on delivery, tracked door to door.

For lifeFree lifetime re-authenticationBring it back any time; we confirm what you bought, in writing.

30-day returns on in-stock pieces. Our Guarantee · Prefer to see it first? Book a private viewing, in Sydney or by video.

Independent Valuation — Available on Request

Every gemstone and jewellery piece we sell — ready-made or bespoke — can be accompanied by an independent valuation certificate, prepared on request by a qualified independent valuer of established repute. It provides a formal, third-party statement of value that you may present to your insurer when arranging cover for your purchase.

Request yours at the time of purchase, or contact us at any time.

Stone Details

Gem type: Spinel
Stone ID: L147643

For centuries spinel was mistaken for ruby, and some of the most famous rubies in the world's crown jewels turned out to be spinel. It is its own species: 8 on the Mohs scale, bright, and almost always untreated, which is unusual among coloured stones. That makes it a straightforward ring stone for regular wear. Designed by Ministry of Gems and handcrafted in our own workshop, with the stone assessed by our FGAA gemmologist.

House assurance. A three-generation Australian gem house with roots in the Ceylon gem trade since the 1960s. Every gemstone we set is assessed in-house by our FGAA-qualified gemmologist, with certification available on request. Free lifetime re-authentication.

Delivery. Free insured shipping Australia-wide, tracked, with signature on delivery. In-stock pieces are dispatched within one to two business days. International delivery is fully insured and tracked; the rate is shown at checkout.

Returns. 30-day returns on in-stock pieces; refunds are processed within ten business days of receipt. Shipping & returns in full.

Every stone we sell is assessed in-house by our FGAA-qualified gemmologist, with its treatment status disclosed in writing. Independent laboratory certification and an independent valuation certificate are available on request. Re-authentication is free for as long as you own the piece. Read the guarantee.

Every ring is made to order in your size, in half sizes from F to Z +6 on the Australian and UK letter scale. The millimetre figures are the inside circumference and inside diameter of the sizing set our workshop makes to; other charts can differ by up to half a size, so when in doubt measure a ring that already fits.

Size	Circumference	Diameter
F	44.14 mm	14.1 mm
F 1/2	44.45 mm	14.1 mm
G	45.11 mm	14.4 mm
G 1/2	45.74 mm	14.6 mm
H	46.02 mm	14.6 mm
H 1/2	46.68 mm	14.9 mm
I	47.25 mm	15.0 mm
I 1/2	47.97 mm	15.3 mm
J	48.38 mm	15.4 mm
J 1/2	49.32 mm	15.7 mm
K	49.64 mm	15.8 mm
K 1/2	50.27 mm	16.0 mm
L	50.58 mm	16.1 mm
L 1/2	51.55 mm	16.4 mm
M	51.87 mm	16.5 mm
M 1/2	52.50 mm	16.7 mm
N	53.16 mm	16.9 mm
N 1/2	53.82 mm	17.1 mm
O	54.51 mm	17.4 mm
O 1/2	54.82 mm	17.4 mm
P	55.76 mm	17.7 mm
P 1/2	56.45 mm	18.0 mm
Q	57.15 mm	18.2 mm
Q 1/2	57.65 mm	18.4 mm

Size	Circumference	Diameter
R	58.47 mm	18.6 mm
R 1/2	59.06 mm	18.8 mm
S	60.00 mm	19.1 mm
S 1/2	60.66 mm	19.3 mm
T	61.29 mm	19.5 mm
T 1/2	62.33 mm	19.8 mm
U	62.89 mm	20.0 mm
U 1/2	63.46 mm	20.2 mm
V	63.84 mm	20.3 mm
V 1/2	64.97 mm	20.7 mm
W	65.22 mm	20.8 mm
W 1/2	65.78 mm	20.9 mm
X	66.54 mm	21.2 mm
X 1/2	66.92 mm	21.3 mm
Y	67.51 mm	21.5 mm
Y 1/2	68.14 mm	21.7 mm
Z	68.77 mm	21.9 mm
Z 1/2	69.43 mm	22.1 mm
Z +1	70.15 mm	22.3 mm
Z +2	71.28 mm	22.7 mm
Z +3	72.45 mm	23.1 mm
Z +4	73.73 mm	23.5 mm
Z +5	74.99 mm	23.9 mm
Z +6	76.25 mm	24.3 mm

Measuring at home. Lay a ring that fits that finger on a ruler and measure the inside diameter edge to edge, or wrap a strip of paper snugly where the ring will sit, mark the overlap and measure the length for the circumference. Measure at the end of the day, check the ring passes the knuckle, and go up a half size for bands wider than 6 mm. Between sizes, or not sure? Read the full sizing guide or ask our gemmologist before we cast.

Every ring is made to order in your chosen size in our own workshop, at the price shown and in the metal pictured; most rings leave the workshop in two to four weeks, fully insured and documented. If you would like it in a different gold or platinum, choose the metal above and request a written quotation, with no payment taken until you have accepted it.