Karat is the percentage of gold in a piece of metal and is expressed in gold parts as in a 22 karat jewellery (22/24*100) it has 91.6% gold.
A carat is unit of measurement to measure the weight of gemstones and a karat is the measurement indicating proportion of gold in metal alloy
Prevent metal from getting scratched, avoid contact with perfumes & sprays, wipe jewellery with soft cloth after use and always keep them in velvet jewellery boxes.
A certificate of purity & fineness of gold is called as hallmarking issued by Bureau of Indian Standard (BIS). Hallmarking on gold shows that the gold used for jewellery making adheres to international standards of purity. i.e. BIS Logo, Purity Number, Assay Centre Logo, Jewellery Mark, Code Year of Hallmarking
Navratna gemstone is a combination of nine precious gemstones that represent the planets, the sun, and the moon. These gemstones namely are Diamond (Heera), Ruby (Manek), Emerald (Panna), Yellow Sapphire (Pukhraj), Blue Sapphire (Neelam), Garnet (Gomed), Pearl (Moti), Cat’s eye (Vaidurya) and Coral (Munga).
The 4c's of diamond are Color, Clarity, Cut and Carat Weight an universal method for assessing the quality of any diamond, anywhere in the world.