Mindkettő drága: az egyik nyaklánc, a másik fülbevaló.

Mindkettő means both or both of them.

It refers to two specific things that are already known from the context. In this sentence, it means both jewelry items are expensive.

You can think of it as being built from:

• mind = all, both
• kettő = two

So the idea is basically all two of them → both.

Because mindkettő is treated as grammatically singular in this kind of sentence, even though its meaning involves two things.

So Hungarian says:

• Mindkettő drága. = Both are expensive.

Not:

• Mindkettő drágák.

This is one of those places where Hungarian grammar does not match English word-for-word.

In Hungarian, the verb to be is usually left out in the present tense, third person when you are making simple statements like this.

So:

• Mindkettő drága. literally looks like Both expensive
• but it means Both are expensive

The same thing happens in the second half:

• az egyik nyaklánc
• a másik fülbevaló

These mean:

• one is a necklace
• the other is an earring / a pair of earrings

This is a very common Hungarian pattern meaning:

• one ..., the other ...
• or more literally, one of them ..., the other ...

So:

• az egyik nyaklánc, a másik fülbevaló means
• one is a necklace, the other is an earring

This structure is very useful when comparing or contrasting two things.

Hungarian has two forms of the definite article:

• a before a consonant
• az before a vowel

So:

• egyik starts with a vowel → az egyik
• másik starts with a consonant → a másik

This is the same article, just in two forms.

In short identifying or contrastive sentences like this, Hungarian often uses the noun without an extra article.

So:

• az egyik nyaklánc, a másik fülbevaló

is a neat, natural way to say:

• one is a necklace, the other is an earring

You may also hear:

• az egyik egy nyaklánc, a másik egy fülbevaló

That version is also understandable, but the shorter version is very natural in a sentence like this.

Grammatically, fülbevaló is singular, but in actual usage it can refer to an earring or sometimes earrings as a jewelry item, depending on context.

So in this sentence, the main point is simply the type of object:

• one item is a necklace
• the other is earring jewelry

If the wider context matters, a translator might choose an earring or a pair of earrings.

Yes, the word order helps show the focus.

• Mindkettő drága comes first, so the main message is: both are expensive
• the part after the colon explains what the two things are

So the structure is roughly:

1. main statement
2. explanation/details

You could rearrange the idea in Hungarian, but this version sounds natural and puts the emphasis on the fact that both items are expensive.

The colon introduces an explanation of the first statement.

So:

• Mindkettő drága: = Both are expensive:
• az egyik nyaklánc, a másik fülbevaló. = one is a necklace, the other is an earring.

It works much like English punctuation here. The second part clarifies what the two expensive things are.

A rough guide:

• mindkettő → MIND-ket-tő
• drága → DRAA-ga
• egyik → EDY-ik or EH-dyik
• nyaklánc → NYOK-laants
• másik → MAA-shik
• fülbevaló → FUEL-be-va-loo

A few important sounds:

• á is a long vowel, somewhat like the vowel in father
• ő has no exact English equivalent; it is a long rounded front vowel
• ü also has no exact English equivalent; it is like u said with rounded lips
• ny is like Spanish ñ in señor
• s in Hungarian sounds like English sh

So:

• másik sounds like maa-shik, not maa-sik

Yes. Mindkettő and mind a kettő can both mean both.

• mindkettő is the compact, standard form
• mind a kettő is also natural and may sound a bit more emphatic or conversational in some contexts

So:

• Mindkettő drága and
• Mind a kettő drága

can both mean Both are expensive.