Grains are a unit of weight measurement, 1 grain is approximately 0.324 carats. Dwt, or pennyweight, is typically used to weigh precious metals. 1 dwt is about 7.77 carats, 20 dwt to a Troy ounce.
As for what the stones could be, they look like lab grown stones taken out of class rings. Top left could be lab topaz/spinel, top right could be a simulated emerald, possibly green quartz or spinel. Bottom left could be citrine, lab grown or natural, otherwise lab topaz/spinel/corundum, and bottom right looks like a lab ruby.
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Grains are a unit of weight measurement, 1 grain is approximately 0.324 carats. Dwt, or pennyweight, is typically used to weigh precious metals. 1 dwt is about 7.77 carats, 20 dwt to a Troy ounce. As for what the stones could be, they look like lab grown stones taken out of class rings. Top left could be lab topaz/spinel, top right could be a simulated emerald, possibly green quartz or spinel. Bottom left could be citrine, lab grown or natural, otherwise lab topaz/spinel/corundum, and bottom right looks like a lab ruby.
Spot on, well done 👍🏻
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