0 a measure of weight for precious stones -- หน่วยน้ำหนักของเพชร
Diamonds are weighed in carats.
1 a unit for stating the purity of gold -- หน่วยระบุความบริสุทธิ์ของทอง
The seeds are said interest in chemistry - in other words, pupils to be the original carat weights used by gold(or their parents), students, professionals on smiths.
The only general exception is the exemption of 9 and 14 carat gold.
I can confirm that this would include articles of 10 carat gold.
In 1964 its output of synthetic diamonds was 4 million carats; in 1968, it had risen to 11 million carats.
In these groups of amendments we have also catered for the term "carat".
Further, gold articles were to be 19 and one-fifth carats.
We feel that it would be wrong to drop altogether the very well-known and accepted word "carat".
I will say a word about the standard for 22 carat gold.
