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🎄 Christmas opening times 🎄
We will be closed from Monday 18th December 2023 to Tuesday 2nd January 2024.
The last shipping day this year is 3pm on Friday 15th December 2023.
£357.00 excl. VAT
2 in stock
2 in stock
Standard shipping fees £5+ may apply. For detail click here.
By measuring the quantity of light reflected through the stone, the Presidium Refractive Index Meter II (PRIM II) is able to separate diamonds, moissanites and other coloured gemstones via the Refractive Index (R.I) of these polished gemstones.
We are open from Monday to Friday.
£357.00 excl. VAT
2 in stock
£357.00 excl. VAT
2 in stock
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