For a beginning

Moon Core — Moonstone Ring

The stone pressed into your hand when you were going somewhere alone.

An oval moonstone on a band thin enough to disappear. The blue that moves across the stone is adularescence — light scattering between microscopic layers inside the feldspar, not a coating and not a treatment.

£139.00~~£159.00~~

Made after you order it · up to 20 days · 925 sterling silver

Ring size

Not sure of your size? Measure it in two minutes

Two minutes with a strip of paper now saves three weeks later. Everything is made after you order, so a size change afterwards means starting again.

1. Cut a strip of paper about 5 mm wide.

2. Wrap it round the base of the finger — snug, but it should pass the knuckle with a little resistance.

3. Mark the overlap, lay it flat, measure in millimetres. Find that number in the circumference column below.

Ring size	Circumference	Inside ø	UK	EU
4.5	48.0 mm	15.3 mm	J	48
5	49.3 mm	15.7 mm	K	49
5.5	50.6 mm	16.1 mm	L	50
6	51.9 mm	16.5 mm	M	52
6.5	53.1 mm	16.9 mm	N	53
7	54.4 mm	17.3 mm	O	54
7.5	55.7 mm	17.7 mm	P	56
8	57.0 mm	18.1 mm	Q	57
8.5	58.3 mm	18.5 mm	R	58
9	59.5 mm	18.9 mm	S	60
9.5	60.8 mm	19.4 mm	T	61
10	62.1 mm	19.8 mm	U	62

Measure in the evening. Fingers are largest at the end of the day. Measuring at 8am in January is the single most common reason a ring turns out tight.
Between two sizes? Take the larger. A ring you cannot get off is a worse problem than one that turns.
Wide bands run small. 6 mm or wider, go up half a size.
Adjustable pieces need no size at all — they open a little and hold.

Not sure? Email your measurement to asi8@gmail.com and we will tell you which number to choose. We would far rather spend five minutes on that than remake a ring.

The millimetres are the inside circumference of the band. Between two sizes, take the larger.

Add the gift box Linen-lined, wax sealed, with the stone card set into the lid. +£25

01 A stone is chosen for your order by hand, held to the light.
02 It is set in solid silver and cut to your size, finished, and checked.
03 It rests, and is wrapped by hand with its card — the stone, and the date it was finished.
04 Dispatched with tracking. Up to twenty days.

Free delivery, no minimum
Tracked worldwide
14-day returns

The story

Turn your hand and the blue moves with it. Hold still and the stone goes almost white.

Materials

Natural moonstone, oval cabochon
Small clear side stones
Solid 925 sterling silver with a gold-tone plated finish

Made to order. Plating is a surface finish and it wears with time; the silver beneath it does not.

More Moonstone

The Edge of the Moon — Moonstone Ring £139.00

Inner Moon — Rainbow Moonstone Ring £139.00

Seen closer

Moon Core — Moonstone Ring

Every frame is the piece itself, photographed as it is — moonstone, set in solid sterling silver.

01 Oval moonstone ring on a fine gold-tone band

02 Moonstone ring showing the blue adularescence

03 Moonstone ring, close view of the setting

04 Moon Core moonstone ring, gold band with the stone catching the light

05 Moon Core moonstone ring standing upright, showing the setting and the shank

Made after you order it Take this one

01 — 05 Drag, scroll or use ← →

What it has been carried for

Moonstone

The stone people were given when nobody could go with them.

01
The one everybody knows
The moon

Pliny the Elder wrote in the first century that the stone held the moon inside it, and that its brightness rose and fell with her. He was a naturalist, not a mystic. He was writing what his century held to be true.
Pliny, Natural History, c. 77 AD
02
Less known
Company

In India it was never an ordinary stone. It is laid out on yellow cloth, and it was the one pressed into your hand when you were going somewhere alone. Not luck. Company.
Indian custom, still practised
03
Almost nobody knows
Refusal

Around 1900 Lalique and the Paris workshops used moonstone instead of diamonds on purpose. A diamond is a fixed performance. Moonstone drifts - and for a movement about things that grow and turn, that was the whole argument.
Art Nouveau, Paris, c. 1895-1914

All of the above is history and folklore, written down because it is real and it is interesting. It is not a claim about what the stone will do. Some people feel something. Some don’t. More in The Codex

Before you decide

Everything we can tell you

01
The stone

Moonstone. What we know about the material in this piece is written on the page above, in the measurements we were given. Where a stone is lab-grown or treated we say so by name. We never call a treated stone natural, and we never use the phrase “semi-precious”.
Read what it has been carried for →
02
The metal

Solid 925 sterling silver. This design carries a plated finish over that silver. Plating is a surface, and it wears with time; the silver beneath it does not. We never plate base metal, and we never describe plating as solid gold.
How to keep it →
03
Made after you order

Nothing here sits in a warehouse. Work begins when the order does, and the piece takes up to 20 days before it ships. Your ring size is cut at that point, which is why we ask for it at checkout.
Making & delivery →
04
Size & fit

Ring sizes run 4.5 to 10 (UK J to U). Measure warm, at the end of the day, and take the reading three times.
How to measure at home →