Gemstone Trade Valuation Centre

Dating Jewellery and Gemstones:

I forgot to ask…around what time did they start marking gold w/K?

Or what time period did they just use hallmarks on the gold jewellery?

this would help me date it somewhat.

Thanks. Nancy Continue reading How to Date An Item

duel question concerning uncut pricing

Question: 1 is a Ruby a very dark red garnet? and how do I determine the pricing on my sapphires and possible rubies?

Your reply will be extremely helpful. Thank you…

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Answer: G’day and many thanks for your query

Your first gemstone you have described as being a ruby - but then say it is Continue reading Uncut Gemstones

Question: Hi David,

I have an certified authentic Tanzanite pear pendant, 0.44 carat,eye flawless, cut fine, final grade vBF1 (B - EF) 6×4mm.

What is it’s estimated market value?
Thanks.

Answer: G’day and many thanks for your query

Firstly; let me say it is illegal, unethical and downright wrong for me to say what an item it worth without me testing it, seeing it etc.

Surely the people who sold it to you and provided the Continue reading Tanzanite Valuation

Engagement Ring Gemstone:

Question: I’ve just inherited my granny’s engagement and wedding band but can’t work out the gem??

It appears black but when held up to the light its shows blue any ideas?

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thanks

Answer: G’day Jo and many thanks for your query

Let’s take a stab in the dark here, because I can’t see or test the gem, but Continue reading My Grandmothers Engagement Ring

Diamonds:

There is nothing like a Diamond. It is the Hardest material (almost 140 times harder than its nearest gemstone) and is named after the Greek word ‘Adamas’ which means ‘Unconquerable’.

This is also why it is used in Engagement rings as it symbolises ‘Everlasting’.

Unlike other gemstones, its primary perfection is based on LACK of colour. The pure colourless or White is the most Valuable, although many shades of Yellow are common.

Famous Continue reading Diamonds