mdx
Brilliant_Rock
- Joined
- Mar 1, 2002
- Messages
- 570
Hi All
Here are extracts from an article I found recently from an insurance claim negotiator
Any Comments?
Wayne
Melbourne Diamond Exchange ltd (Australia)
Princess Cut:
The Black Sheep of Diamonds
It''s a matter of shape
Princess Cut:
It’s a matter of shape
They''re likely to get into trouble, these princess cut diamonds. Likely to get chipped, damaged. Likely to have to be replaced. Why is that?
When it comes to damage from chipping, round is the safest shape. A properly proportioned "round brilliant" diamond, for example, is strongest. That''s because it''s basically a circle (when viewed from the top), without large points protruding
The "princess cut" diamond, on the other hand, is square when viewed from the top. Four corners are exposed for damage. This shape is so vulnerable that some jewelry experts characterize it as an accident waiting to happen.
Diamonds are reputed to be quite hard. Do they really damage so easily?
Diamond is, indeed, the hardest gem. In gemological terms, hardness means resistance to scratching. A diamond can scratch other gems, but nothing can scratch a diamond except another diamond. Cutting and faceting of diamonds can be done only with other diamonds because only diamond can cut diamond. Their hardness also allows diamonds to take a high polish, which enhances their scintillation.
Toughness, however, refers to the ability of the gem to resist breakage, as from a blow or fall. Diamond''s toughness rating is only fair to good. Those sharp corners do make the princess cut diamond more vulnerable.
It comes down to carat weight
The princess shape was invented to get the biggest gem out of a piece of rough stone. Customers may not know much else about how to judge a diamond, but they will pay more for size (carat weight). Cutters often sacrifice beauty for a higher carat weight. Similarly, the princess cut sacrifices durability for carat weight.
What does it mean to the insurer?
Insurance companies have been routinely paying damage claims for chipped corners on princess cut diamonds. Really, they should NOT be paying on such claims. These vulnerable corners constitute inherent vice, and their chipping should be excluded by the policy. However, this would be difficult to enforce since past practice has been to pay on such damage claims. Policyholders might sue for bad faith claims practices. A better approach would be to exclude all damage on princess cut diamonds.
We hope that the jewelry industry will follow the lead of Sirius, a Canadian company that has modified the princess cut by clipping the tips off the corners. This does lighten carat weight somewhat but it also reduces the likelihood of damage. Sirius sells the modified princess cut under the name Arctic Empress™. These stones are truly cut for beauty.
FOR UNDERWRITING
Exclude breakage on all Princess cut diamonds.
Two other common shapes, though less popular than princess cuts, also have a high vulnerability to damage because of sharp points These are Marquise and Pear Shapes
Regarding inherent vice, shape is not the only consideration. In a diamond of any shape, poor cut proportions can produce places vulnerable to damage. A common problem is a girdle that is too thin.
Points along the girdle may be covered by prongs in the setting. Note, however, that the points are still likely to break under stress. A lot of princess cut diamonds incur point chipping when the stone is set, removed for resetting, etc., but prongs then hide the earlier damage.
Here are extracts from an article I found recently from an insurance claim negotiator
Any Comments?
Wayne
Melbourne Diamond Exchange ltd (Australia)
Princess Cut:
The Black Sheep of Diamonds
It''s a matter of shape
Princess Cut:
It’s a matter of shape
They''re likely to get into trouble, these princess cut diamonds. Likely to get chipped, damaged. Likely to have to be replaced. Why is that?
When it comes to damage from chipping, round is the safest shape. A properly proportioned "round brilliant" diamond, for example, is strongest. That''s because it''s basically a circle (when viewed from the top), without large points protruding
The "princess cut" diamond, on the other hand, is square when viewed from the top. Four corners are exposed for damage. This shape is so vulnerable that some jewelry experts characterize it as an accident waiting to happen.
Diamonds are reputed to be quite hard. Do they really damage so easily?
Diamond is, indeed, the hardest gem. In gemological terms, hardness means resistance to scratching. A diamond can scratch other gems, but nothing can scratch a diamond except another diamond. Cutting and faceting of diamonds can be done only with other diamonds because only diamond can cut diamond. Their hardness also allows diamonds to take a high polish, which enhances their scintillation.
Toughness, however, refers to the ability of the gem to resist breakage, as from a blow or fall. Diamond''s toughness rating is only fair to good. Those sharp corners do make the princess cut diamond more vulnerable.
It comes down to carat weight
The princess shape was invented to get the biggest gem out of a piece of rough stone. Customers may not know much else about how to judge a diamond, but they will pay more for size (carat weight). Cutters often sacrifice beauty for a higher carat weight. Similarly, the princess cut sacrifices durability for carat weight.
What does it mean to the insurer?
Insurance companies have been routinely paying damage claims for chipped corners on princess cut diamonds. Really, they should NOT be paying on such claims. These vulnerable corners constitute inherent vice, and their chipping should be excluded by the policy. However, this would be difficult to enforce since past practice has been to pay on such damage claims. Policyholders might sue for bad faith claims practices. A better approach would be to exclude all damage on princess cut diamonds.
We hope that the jewelry industry will follow the lead of Sirius, a Canadian company that has modified the princess cut by clipping the tips off the corners. This does lighten carat weight somewhat but it also reduces the likelihood of damage. Sirius sells the modified princess cut under the name Arctic Empress™. These stones are truly cut for beauty.
FOR UNDERWRITING
Exclude breakage on all Princess cut diamonds.
Two other common shapes, though less popular than princess cuts, also have a high vulnerability to damage because of sharp points These are Marquise and Pear Shapes
Regarding inherent vice, shape is not the only consideration. In a diamond of any shape, poor cut proportions can produce places vulnerable to damage. A common problem is a girdle that is too thin.
Points along the girdle may be covered by prongs in the setting. Note, however, that the points are still likely to break under stress. A lot of princess cut diamonds incur point chipping when the stone is set, removed for resetting, etc., but prongs then hide the earlier damage.