Onyx Signet Ring

Name: Onyx Signet Ring
Brand: Ministry of Gems
SKU: CJR4141
Price: 2700.0 AUD
Availability: InStock

$2,700

Metal type

Metal colour

Every piece is bespoke, made to order in our own workshop · pictured in white gold. The price shown is our 9K gold price; 14K, 18K, 21K and platinum are quoted individually in writing.

Gem Grade

Size

Choose your ring size to continue · Ring size guide

Australian men average size T · free ring sizer on request · one complimentary resize within 90 days

Engraving optional · up to 20 characters

Hidden inside the band, engraved by hand in our workshop. Interior engraving from A$90, hand-engraved initials on a signet from A$180, confirmed with you before we begin.

Enquire About This Piece

Handcrafted to order in our own workshop, most pieces in 2–4 weeks

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.

Made to order: covered by our refund policy rather than 30-day change-of-mind returns. 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.

A black onyx signet with engraved scrollwork — designed by Ministry of Gems and handcrafted in our own workshop.

A black onyx face sits at the top of this signet, finished with engraved scrollwork that gives the traditional men's style a decorative edge. A signet like this is made for daily wear, often on the little finger. White gold is pictured, and it can be made to your size in 9K, 14K, 18K or 21K yellow, white or rose gold, or platinum.

Metal: 9K, 14K, 18K or 21K yellow, white or rose gold, or platinum (pictured: white gold). Price shown is for 9K; other metals quoted in writing
Gemstones: Natural gemstones (certification available on request) — onyx
Design no.: CJR4141

Bespoke, made to order. The price shown is our 9K gold price with standard-grade natural gems; Premium gem grade updates it above. Choose your metal and gold colour: 14K, 18K, 21K and platinum are quoted individually in writing, and no payment is taken until you have accepted the quotation. Made to order in our own workshop in 2–4 weeks.

As a vertically integrated jeweller, we design and manufacture in-house — from our own gem sources to the finished piece, assessed by our FGAA-qualified 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. Made-to-order pieces are handcrafted in our own workshop and most leave in two to four weeks. International delivery is fully insured and tracked; the rate is shown at checkout.

Returns. As a made-to-order piece this item is covered by our refund policy rather than 30-day change-of-mind returns; Australian Consumer Law guarantees always apply. 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.

For men. The Australian men's average is size T (19.5 mm inside diameter); T, U and V account for more than half of men's rings sold. Order half a size up for bands 8 mm and wider, fit a signet snug so the head does not turn, and if in doubt ask us for a free ring sizer. One resize within ninety days is complimentary.

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.

The price shown is our 9K gold price with standard-grade natural gems; Premium gem grade updates it above. Choose your metal and gold colour: 14K, 18K, 21K and platinum are quoted individually in writing, with no payment taken until you have accepted the quotation. We design around your stone, you approve the render before anything is cast, and most pieces leave our workshop in two to four weeks, fully insured and documented.