In Chaldean numerology, there are several systems for assigning numerical values to the letters of the Latin alphabet. However, only two or three of these have significant practical value. The most widely accepted model is the one advocated by the numerologist Cheiro.

Because the Latin alphabet includes letters for sounds that were not represented in ancient Semitic scripts—and because some ancient letters are difficult to match precisely with their modern counterparts—not all Latin letters carry a “pure” vibrational frequency.

When considering a name change, I recommend avoiding the letters C, H, and X. These generally correspond to the values C=3, H=5, and X=5, but in certain contexts, they may also be interpreted as C=2, H=8, and X=6.

The letters T and S are somewhat less problematic, but still not considered vibrationally pure. The same goes for O and E. That said, T, S, O, and E are generally acceptable for use in names.

Caution is also advised when dealing with certain characters from localized alphabets. Let’s take the Croatian letter Đ (IPA: [dʑ]) as an example. There are several different interpretations of this letter’s numerical value:

• Đ = 1 (based on the sum of Hebrew Dalet [4] + Samekh [6] = 10, reduced to 1)
• Đ = 2 (Hebrew Dalet [4] + Zayin [7] = 11, reduced to 2)
• Đ = 3 (by analogy with the Arabic letter Jim – ج – which has the value 3)
• Đ = 4 (derived from the conceptual design of the letter D; this interpretation is supported by leading Croatian Chaldean numerologist Virna Heles)
• Đ = 5 (Hebrew Dalet [4] + Yod [10] = 14, reduced to 5)
• Đ = 9 (allegedly connected to the letter/sound Tsade)

What about other special letters in the Croatian alphabet? The letters Č, Š, and Ž originate from Czech orthography and are not exclusive to the Croatian Gaj’s Latin alphabet—they are also used in Czech, Slovak, and Slovenian alphabets (the Slovenian alphabet, in fact, is a simplified version of Gaj’s system).

• Č stems from C and retains the value 3.
• Š derives from S, giving it a value of 3.
• Ž comes from Z, so its value is 7.

The digraphs LJ and DŽ, which are treated as separate letters in the Croatian system, are numerologically interpreted as the sum of their parts: L + J and D + Ž, respectively. Ć, like Č, is based on the letter C, and also holds the value 3.

Given all of this, it’s generally not advisable to use names containing the letter Đ when changing your name in Croatia. Other special letters from localized European alphabets may also pose similar challenges. To be on the safe side, it’s best to use letters whose numerical values are defined in Cheiro’s Chaldean system—excluding C, H, and X.