By tradition

Birthstones by day, zodiac and Thai zodiac year

A gem chosen for someone's birthday carries more meaning than a merely beautiful one. Browse by day of the week, zodiac sign, international birth month or Thai zodiac year. Each page shows the gems and jewellery we have in store right now.

Birthstones by day of the week

Thai tradition assigns a colour to each day of the week, and the gem that carries that colour is considered auspicious for people born on that day. Wednesday is split into day and night, as in Thai astrology.

Sunday

Red

Ruby · Red spinel — 4 in store

Monday

Pale yellow, cream, white

Yellow sapphire · Pearl · Diamond — 54 in store

Tuesday

Pink

Pink sapphire · Pink ruby · Pink spinel — 3 in store

Wednesday (day)

Green

Emerald · Jade · Green sapphire · Sphene — 10 in store

Wednesday (night)

Black, grey, deep purple

Black spinel · Black sapphire

Thursday

Orange, golden yellow

Yellow sapphire · Orange sapphire — 5 in store

Friday

Blue

Blue sapphire — 1 in store

Saturday

Purple, black

Purple sapphire · Black spinel — 1 in store

Birthstones by zodiac sign

The zodiac sign is set by day and month of birth. Zodiac gems come from Western astrology, which ties each sign's ruling planet to a colour and a stone.

Aries

21 Mar – 19 Apr

Diamond · Ruby — 43 in store

Taurus

20 Apr – 20 May

Emerald · Blue sapphire — 4 in store

Gemini

21 May – 20 Jun

Pearl — 10 in store

Cancer

21 Jun – 22 Jul

Ruby · Pearl — 14 in store

Leo

23 Jul – 22 Aug

Ruby · Yellow sapphire — 9 in store

Virgo

23 Aug – 22 Sep

Blue sapphire · Jade — 1 in store

Libra

23 Sep – 22 Oct

Blue sapphire · Pink sapphire — 4 in store

Scorpio

23 Oct – 21 Nov

Ruby · Black spinel — 4 in store

Sagittarius

22 Nov – 21 Dec

Blue sapphire — 1 in store

Capricorn

22 Dec – 19 Jan

Ruby · Black spinel — 4 in store

Aquarius

20 Jan – 18 Feb

Blue sapphire · Purple sapphire — 2 in store

Pisces

19 Feb – 20 Mar

Pearl · Blue sapphire — 11 in store

Birthstones by month

The international birthstone list (Jewelers of America) used by jewellers worldwide. Some months have more than one stone to choose from.

January

Garnet

February

Amethyst

March

Aquamarine

April

Diamond

Diamond — 40 in store

May

Emerald

Emerald — 3 in store

June

Pearl · Moonstone · Alexandrite

Pearl — 10 in store

July

Ruby

Ruby — 4 in store

August

Peridot · Spinel · Sardonyx

Spinel

September

Sapphire (all colours)

Sapphire — 13 in store

October

Opal · Tourmaline

November

Topaz · Citrine

December

Turquoise · Tanzanite · Zircon

Birthstones by Thai zodiac year

The twelve-animal cycle shared by Thai and Chinese tradition. Each animal's gems follow the lucky colours of its element. If you were born between January and early April, check whether the year had already changed.