It is Latin, but abbreviated. The expression "GEORGIVS V" identifies the reigning Monarch of the period, in this case, King George V. It does not identify the country or the denomination of the coin. "DEI GRA BRITT OMN REX FID DEF IND IMP" means "By the Grace of God, King of all the British territories, Defender of the Faith, Emperor of India".
George V coins were issued from 1911 to 1936 inclusive.
In circulated condition, your Great Britain penny is worth about 50 cents.DanUser:WorkingMan
If it has both George V and the year 1900, it is a very poor fake. George V did not appear on British coins until 1911.
I am unaware of any British Empire country that uses the Peso as its currency. The inscription is Latin, but abbreviated. The expression "GEORGIVS V" identifies the reigning Monarch of the period, in this case, King George V. It does not identify the country or the denomination of the coin. "DEI GRA BRITT OMN REX FID DEF IND IMP" means "By the Grace of God, King of all the British territories, Defender of the Faith, Emperor of India".
IND IMP was part of a much larger title used by British Monarchs. It is abbreviated Latin and means Emperor (or Empress) of India. IND IMP (India Imperator) was used on British and British Empire/Commonwealth coins from about 1893 when India became part of the British Empire, until 1948 when India became independent. Depending on who was king or queen at the time and which particular coin it appeared on, the legend may have appeared as - "VICTORIA DEI GRA BRITT REGINA FID DEF IND IMP" "EDWARDVS VII DEI GRA BRITT OMN REX FID DEF IND IMP" "GEORGVS V DEI GRA BRITT OMN REX FID DEF IND IMP" "GEORGVS VI DEI GRA BRITT OMN REX FID DEF IND IMP"
"GEORGIVS V DEI GRA BRITT" is the start of the motto "GEORGIVS V DEI GRA BRITT OMN REX FID DEF IND IMP", which is in turn abbreviated Latin for "George the Fifth, By the Grace of God, King of All Britain, Defender of the Faith and Emperor of India". This full motto is found on British coins issued in 1918, and variants of it are found on the coins of several British colonies and Commonwealth nations of the time. However, Britain in 1918 had no coins whose denomination was 25 anything, and none of the other nations that had 25 Cent coins in 1918 used that motto (Canada was close, but their motto read "GEORGIVS V DEI GRA REX ET IND IMP" ("George the Fifth, By the Grace of God, King and Emperor of India").
Your coin is from the U.K. and assuming it's relatively worn from circulation it would retail for $2 to $4. The inscription is heavily abbreviated Latin for "George the Fifth, by the Grace of God King of All England, Defender of the Faith and Emperor of India". Whew!!
I do not think it will devalue the stone any, but it has certainly devalued the coin. Modified coins have no collector value.
Please check your coin again and post a new question. Victoria was queen in 1863; George V was her grandson and didn't assume the throne until 1911. The motto is heavily abbreviated Latin and appears on all British coins, with the monarch's name of course being different depending on the date.
Other than for very minor differences, all British Halfpennies minted from 1911 to 1925 should be almost identical. See the link below.
The 1914 British sixpence coin is 19.5 mm in diameter and has a portrait of George the Fifth on the obverse (front) of the coin and a lion atop a crown on the reverse (back). It weighs 3.01 grams and is 92.5% silver, giving it an Actual Silver Weight (or "ASW") of 0.0895 troy ounces. There were 22,715,000 such sixpence coins minted in that year. It is worth about US$2.00 in Fine condition; about US$8.00 in Very Fine; about US$18.00 in Extremely Fine; and about US$35.00 in Uncirculated condition. The words on the front, "GEORGIVS V DEI GRA BRITT ONM REX" are an abbreviation of the latin words meaning "George the Fifth by the Grace of God King of all Britons." The words on the back "FID: DEF: IND: IMP.", which appear above the denomination and date, are likewise abbreviated latin, in this case meaning "Defender of the Faith and Emperor of India."
This question doesn't have enough information for an answer because you didn't mention the coin's denomination. Also, it's redundant to ask what the value of something is worth.