Seylan Gems & Jewelry
Birthstones are a gift custom: a gem traditionally tied to a month. They are a pleasant way to narrow a choice. They are not medicine, and we do not sell them as a promise about planets, marriage, or fortune.
Specifications
Typical published ranges used in gemology. Specific gravity below matches our carat calculator default where applicable. (SG 3.70)
| January | Garnet |
|---|---|
| February | Amethyst |
| March | Aquamarine |
| April | Diamond; a natural white sapphire is a different stone if you want a colorless alternative |
| May | Emerald |
| June | Pearl; alexandrite is a modern alternate some lists add |
| July | Ruby |
| August | Peridot; spinel is a durable stone we often have if peridot is not the brief |
| September | Sapphire |
| October | Opal, with tourmaline as a common alternate |
| November | Topaz, with citrine as a common alternate |
| December | Turquoise, zircon, or tanzanite, depending on the list |
The month is a starting point. The stone you give should still be a good stone: honest treatment, a size that fits the setting, and a color the person will wear. If we do not have that month’s traditional gem in stock, we will say so. We will not rename a different species so the calendar looks complete.
April is the clearest example. Diamond is the traditional stone. A white sapphire is a sapphire. It can be a beautiful colorless gift. It is not a diamond, and we will not sell it as one.
We do not claim a gem treats an illness, removes a family difficulty, or changes a chart of the sky. Other sellers build businesses on those claims. That is not this business. If you are choosing a gift for a birthday, an anniversary, or a birth month, we can help you compare color, durability, and price among stones we actually have.
Durability still matters more than the month. Emerald and opal need gentler wear than sapphire or spinel. Say how the jewelry will be worn and we will steer you toward a stone that can survive that life.
Pick the month, then open the species guide for that gem if we have written one. Check carat against millimetres. Read the treatment line. Look at the stone in more than one photo. If you want it set, tell us the metal and whether it is a ring or a pendant so the size makes sense.
The tradition is yours to enjoy. The facts on the product page are ours to get right.
Ready to look
Browse certified stones estimate carat from millimetres or ask us to help interpret a report.
Join collectors who shop certified Ceylon stones with real 360° views. Code emailed instantly.
No spam. Unsubscribe anytime. One code per customer.
Enter your email. If you leave, we will send this cart back — Ceylon gems often sell as unique pieces.
Sapphire
Ruby
Alexandrite
Emerald
Padparadscha
Aquamarine
Spinel
Garnet
Peridot
Tourmaline
Tanzanite
Citrine
Quartz
Chrysoberyl
Apatite
Topaz
Amethyst
Lolite
Zircon
Sinhalite
Cats Eye
Opal