Looked at this Lucere & still a bit confused

[jackaroe]

I went to look at this last night. The fire was good and for an I color I was shocked to see how much whiter it was from some of the other round I color I''ve seen. When I was looking straight down through the crown, the pavilion facets looked like they turned a shade of black. Is that something to be concerned about? What is it that I’m seeing?

Lucere
Measurements: 6.51 x 6.46x 4.80 mm
Weight: 1.49
Proportions:
Depth: 74.3%
Table: 59%
Girdle: Medium to Slightly Thick
Cutlet: None
Finish:
Polish: Very Good
Symmetry: Very Good
Clarity Grade: VS1
Color Grade: I
Florescence: None

Sarin: (not sure how to read these, but this is what was on the back of the stones paper wrap at the store
Width: 6.49mm
Length: 6.52mm
L/W: 1.00
Total D.mm: 4.80 73.9
Table W.mm: 3.82 3.81 3.82 58.9
Crown A: 31.6 30.8 32.0
Crown H.mm: 0.80 0.78 0.81 12.3
Pavil.D.mm: 3.60 3.55 3.64 55.5

 

[Nicrez]

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On 2/6/2004 11:18:51 AM jackaroe wrote:

When I was looking straight down through the crown, the pavilion facets looked like they turned a shade of black. Is that something to be concerned about? What is it that I’m seeing?

That my friend is the curse of the non-round. it's called the bow0tie of any fancy stone, and some stones bowties are more obvious than others. This Lucere worries me, as it has a very big depth, and doesn't have that sort of even cut one should expect. Table's OK at 59, but depth at 74 is not so good.


Sarin: (not sure how to read these, but this is what was on the back of the stones paper wrap at the store
Width: 6.49mm (Length and width of the stone sides)Length: 6.52mm
L/W: 1.00 (states it perfectly square. When Length/Width ration = 1.05+, it's rectangular)

These numbers below are just the percise (or as percise as Sarin can get a non-round stone) measurements for angles, and facets in Millimeters. This is helpful to calculate table, depth % and basic proportions of the stone. Remember Sarin isnt always 100%, but it's still helpful.

Total D.mm: 4.80 73.9
Table W.mm: 3.82 3.81 3.82 58.9
Crown A: 31.6 30.8 32.0
Crown H.mm: 0.80 0.78 0.81 12.3
Pavil.D.mm: 3.60 3.55 3.64 55.5----------------

 

[jackaroe]

The person I was speaking to told me that the light loss, or brilliance performance of the stone was not something I should even bother with in terms of trying to look beyond what I can see with my own eyes. I felt that I would like to at least see this thing under an idealscope, which I've ordered. I compared an F color S1 princess and it was close to my eyes in color. It didn't look like the fire off the Lucere was really that much better then the princess.

 

[Rand_alThor]

One thing about bowties, bowties exist on almost every fancy cut stone out there. This effect is especially pronounced in pear shaped stones.




I am a stickler, I cant stand them, so I would personally grade a stone, which has a minimal bowtie effect better. In some cases like the lucere, I've heard the bowtie actually accentuates the diamond. I dont know because I've never seen one. Have you looked at Regent cuts or Queen of Hearts ? I know Jonathan @ GOG has a few of them and their staff is one of the friendliest I've ever spoken with.

 

[Nicrez]

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On 2/6/2004 11:48:43 AM jackaroe wrote:

The person I was speaking to told me that the light loss, or brilliance performance of the stone was not something I should even bother with in terms of trying to look beyond what I can see with my own eyes.

Ok, in shaped stones that is true, because each stone has a "personality". Depends on your tastes as I am a brilliance girl, versus a fire girl. BUT when people say that, and it's THEIR stone, I wonder if they are hiding imperfect proportions, because they think you haven't seen enough stones to know the difference between them. They ALL sparkle!

I felt that I would like to at least see this thing under an idealscope, which I've ordered. I compared an F color S1 princess and it was close to my eyes in color. It didn't look like the fire off the Lucere was really that much better then the princess.

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Princess stones are cut better and the ones you may have seen may have been cut in better proportions. Trust me, I saw a beauty, when I didn't even think princesses could sparkles like that. Point is, if cut right, Luceres SHOULD sparkle and fire.