Rose cut diamonds
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Nicrez
Ideal_Rock
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- Jan 21, 2004
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Sure 
I really, really like these things - so assume some bias.
What are rose cuts ? Imagine a cab covered with trianglular facets. No pavilion at all. Shapes ca be anything: rounds, squares triangles and anything inbetween. Without pavilions, these guys are shallow indeed (thing up to 30% - at most half of yout average round brilliant).
Are they rare ? No, rose cuts are being cut today so the supply has definitely run out at once with estate jewelry. Only these are not so much used in the usual jewelry types. You will find plenty of rose cuts in Indian jewelry and in some trendy designer pieces (Durham, Me&Ro made rosecuts part of their tradename), as Nicrez says.
Are they brilliant ? No, not quite. And have virtually no fire no matter how you look at them. Actually, the famous Tolkowsky study cited as refference for ideal RBC proportions nowadays begins by showing why rose cuts lack fire and continues to play these down.
Are they expensive ? No. Rose cuts are cheaper than most others and (not to say all) cuts and the spreadier - carat for carat, a rose cut will probably be one and a half as large (in diameter) as a traditional brilliant.
So, why are jewelry pieces using rose cuts expensive ? See above - those are probably high fashion or collectable antiques - it is not the diamonds that make the price. Just some coincidence.
If you still wonder what makes one rose cut better than the next, there are two things off the bat: symmetry (the more regular the shape the better, visible irregular outlines are common) and thickness (say above 20% ?) as long as the diamond still has a nice dome). The arangements of facets also counts - there are no strict rules here, so the faceting of this diamond dome can get very random indeed. Modern rose cuts are better cut than olds, on average.
Something special ? You may find the odd double rose cut (shaped like a lentil) or a Dutch rose (with a simple single cut pavilion). These are relatively uncommon indeed. Although Dutch rose cuts could be cut for brilliance with proportions close to those of ideal modern brilliants, I have never seen any that bright. Double rose cuts are not more brilliant then the normal flat bottom rose cuts - rather transparent actually.
So... they are cheap, spready, not brilliant and not very common in modern jewelry.
I think you could learn to like them (like I do), but there are not too many fans of rose cut diamonds, unfortunately
BTW - I hope you did not mean "Fire rose cut" - this a brand that has nothing to do with the above at all!
Hope this helps...
I really, really like these things - so assume some bias.What are rose cuts ? Imagine a cab covered with trianglular facets. No pavilion at all. Shapes ca be anything: rounds, squares triangles and anything inbetween. Without pavilions, these guys are shallow indeed (thing up to 30% - at most half of yout average round brilliant).
Are they rare ? No, rose cuts are being cut today so the supply has definitely run out at once with estate jewelry. Only these are not so much used in the usual jewelry types. You will find plenty of rose cuts in Indian jewelry and in some trendy designer pieces (Durham, Me&Ro made rosecuts part of their tradename), as Nicrez says.
Are they brilliant ? No, not quite. And have virtually no fire no matter how you look at them. Actually, the famous Tolkowsky study cited as refference for ideal RBC proportions nowadays begins by showing why rose cuts lack fire and continues to play these down.
Are they expensive ? No. Rose cuts are cheaper than most others and (not to say all) cuts and the spreadier - carat for carat, a rose cut will probably be one and a half as large (in diameter) as a traditional brilliant.
So, why are jewelry pieces using rose cuts expensive ? See above - those are probably high fashion or collectable antiques - it is not the diamonds that make the price. Just some coincidence.
If you still wonder what makes one rose cut better than the next, there are two things off the bat: symmetry (the more regular the shape the better, visible irregular outlines are common) and thickness (say above 20% ?) as long as the diamond still has a nice dome). The arangements of facets also counts - there are no strict rules here, so the faceting of this diamond dome can get very random indeed. Modern rose cuts are better cut than olds, on average.
Something special ? You may find the odd double rose cut (shaped like a lentil) or a Dutch rose (with a simple single cut pavilion). These are relatively uncommon indeed. Although Dutch rose cuts could be cut for brilliance with proportions close to those of ideal modern brilliants, I have never seen any that bright. Double rose cuts are not more brilliant then the normal flat bottom rose cuts - rather transparent actually.
So... they are cheap, spready, not brilliant and not very common in modern jewelry.
I think you could learn to like them (like I do), but there are not too many fans of rose cut diamonds, unfortunately
BTW - I hope you did not mean "Fire rose cut" - this a brand that has nothing to do with the above at all!
Hope this helps...
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