what is the average value of a 3.0 DWT round, white diamond w/medium clarity?
492566
Retail value will be around $25k. However, this is rough since there is not nearly enough information to give an accurate assessment of your diamond.
722084
2.0...a D is worth 1.0 and a B is worth 3.0...average them together and you get a 2.0
978537
Mostly clarity, a well focused image across the whole field of view with well focussed crosshairs. Has he suggested a magnification? Does he want variable power? For fixed power I mostly go with 6x for hunting, higher magnification seems to make it slow to get the sight picture right and acquire the target. For variables something in the 2-7 to 4-12 range should do, 3-9 is the most popular (or was). I'd be interested to hear any alternative views on those. \n\nWaterproof and fogproof too, don't want to forget those. You need to ask if he want's glossy, matt or stainless too, it would be a shame to get him the wrong thing, if he's bothered.\n\nFor best brightness the objective diameter should be 7x the magnification, so a 4x28 gives a 7mm exit pupil, which means that the light it gives out can all be taken in through the pupil of an eye. If you have a 10x40 then the exit pupil is 4mm and only about half the pupil diameter of the human eye receives light. That's why we find funny numbers like 8x56, 6x42, 4x28 and also why a lot of sailing binoculars are 7x50. This is at the esoteric end of things though, focussed is much more important.\n\nCabelas is another Leupold stockist.
39488
Worth of course depends on how many people are wanting to buy it.  On of the best sources to get it out there and seen is to take a picture of it and sell it on ebay.  There is a huge huge demand for minerals/crystals of that nature on there.  I know because I buy alot of my crystals on there.  See if htat works for you.
978391
It looks like an opal to me.  Check the hardness, if you can inscribe it with a steel knife it is softer than 6-7on the Moh's hardness scale, and probably an opal. if the blue mineral scatches glass it is harder than 5.
463556
20-1000mW is a huge range for power and cost will vary considerably.  You should also consider your other specifications (cw/pulsed, wavelength, beam stability, beam divergence) as these will vary from laser to laser.\n\nEdmund Optics (http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1341)\n20 mW green for $3.2k\n50 mW green for $5.0k\n\nThinkLasers (http://www.thinklasers.com/)\n30mw-300mW green for $595-$2250\n150mW-250mW blue for $3470-$7650
941294
There's several on Ebay,,\nPrice average seems about $3~4,,plus shipping\n\nhttp://search.ebay.com/search/search.dll?sofocus=bs&sbrftog=1&catref=C6&from=R10&sbrbin=t&satitle=silver+certificate&sacat=-1%26catref%3DC6&sargn=-1%26saslc%3D2&sadis=200&fpos=77031&sascs=2&fasi=1&ftrt=1&ftrv=1&saprclo=&saprchi=&fsop=3%26fsoo%3D1&coaction=compare&copagenum=1&coentrypage=search
535392
Conventional wisdom used to say 2 months salary... sometime in the past couple of years its changed to 3.  In reality, the best answer is no more than you can comfortably afford.  Remember that once you get married your debt becomes her debt as well-- and you've got a wedding on the horizon to pay for.  So don't finance a huge rock that's going to take you years to pay off.  When you go ring shopping, make cut, color and clarity a priority over size.  $3,000 should buy you a decent 3/4 carat ring (depending on metal).
153695
It will cost you US$100 to buy.\npair of 7x50 binoculars\nI've seen their 60mm aperture (about 2.4 inches) being sold by JC Penny just for US$100.
625721
Here are some questions that will help you:\n\nFirstly, are they natural or synthetic?  \nSome synthetics can look amazingly similar to heat-treated naturals.  \n\nIf they are synthetic, what kind of synthetics are they? Flame-fusion? Flux-grown? Flame-fusion synthetics can be had for a few cents a piece.  Some flux-grown synthetics cost over a $100/ct.\n\nIf they are natural, you'll need to judge their quality:\n\nColor - Is the color saturated? Is the tone balanced? Do they show undesirable brown modifiers? \n\nClarity - Are there inclusions? How distracting are they? Where are they located? Do they improve or adversely effect the aesthetics of the stones?  Do they affect durability? \n \nCut - Are the stones faceted or cabachon-cut? Are they transparent, translucent or opaque?  What shapes are they?\nAre they cut well? ie balanced & symmetrical, good length-width ratio, good polish and finish.  There is a premium for matched pairs and lots.\n\nCarat - 13 rubies totalling 50 carats makes each piece about 3.85cts.  Hmmm...that's considered large for rubies.  \nFine stones above 3 carats are considered rare.  Commercial & utility quality stones can be hundreds of carats in size and still not be very valuable.\n\nOrigin - Where were they mined? There is a premium for Burmese stones, especially from Mogok.\n\n------------------------------------------ \n\nBased on the information you have provided, it is not possible to accurately say what they are worth.  You could have a jeweller look at them, but it's probably better to send them to a professional colored stone appraiser.  \n\nAs a very rough estimate, here are some price ranges for faceted rubies in the 3ct range (in Bangkok): [Commercial/Good/Fine]\nRuby [25-300/300-1000/1000-6000]\nPink Sapphire (low saturation rubies) [50+/100-250/250-1500]\n\nBTW, 99% of all rubies available in the market are heat-treated.  A premium is put on stones that are not heated but only if they are of fine quality material.  All other things equal, washed out stones that have not been heat treated are never worth more than heated material with good color.
495467
http://www.acstones.com/gemofmonth/2001/gemofmonth.8.01.html
664723
Not very high at all. I bought one for a FAL, sent it back a month later when the crosshairs turned inside the tube. The "new" scope BSA sent me had contamination on the inside lenses.
320305
The other mathematical formula to remember (the last one, I promise) is the one that tells you the twilight factor of your instrument, i.e.; how much light will be transmitted to your eye. This is found by multiplying the magnification by the size of objective and taking the square root of the result. Again, using the 7x50 as an example, i.e. Ö7x50 = 18.71 twilight factor. The larger the result the better the theoretical light transmission with 15 being good and 25 being excellent. I say theoretical because if you were to compare two optical instruments of like size, the more expensive one would give you a better image due to the quality of glass and internal finish.\n\nAs in all things there are provisos however. The optical advantages between one or other of the top manufacturers are tiny and can be measured by a very few minutes’ difference at last light, and really the choice boils down to which instrument catches your eye or sports the niftiest badge. Secondly, the superior optical performance of an expensive instrument can be degraded by a single scratch. Yes! One scratch on the front lens will degrade the image in your £600 glass to that of a £250 one.
565836
u will get rough diamond suppliers in surat in india ,usualy siteholders sell rough ,but if u want loose diampnds and pointers i can help u . U can freely contact me netime at my email is  rohit.nrb@gmail.com ..
435415
$30 bucks on eBay - best I could find
903063
About 15 bucks. Have it appraised
947039
It appears they're dirt cheap on eBay.  I went to eBay UK and search for "dx3800" and it came up with the following:\n\nhttp://search.ebay.co.uk/search/search.dll?cgiurl=http%3A%2F%2Fcgi.ebay.co.uk%2Fws%2F&fkr=1&from=R8&satitle=DX3800&category0=\n\nThere are loads of sets of 4 or 12 cartridges for about £5, so I think that's the sort of thing you're after.  Double check all the details first of course, and don't be afraid to ask the seller any questions.  You don't need to be in a rush to buy them - there's SO many on there ending all the time.\n\nAll the best - I hope that helps!