http://www.m516.com/round-diamond/
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 100ct 21 ROUND DIAMOND 3 FLOWER ENGAGEMENT Wedding Ring LADIES 14K Yellow Gold $519.00 Time Remaining: 30m Buy It Now for only: $519.00 |
 370 Ct Natural Round Brilliant Cut Black Diamond Loose Solitrie Certified 3Pcs $54.57 Time Remaining: 30m |
 360 ct Round Diamond 18k Tennis Bracelet Deco Antique Style 36 x 010 ct each $4,850.00 Time Remaining: 31m Buy It Now for only: $4,850.00 |
 282ctw Excellent G VS2 Round 14k Vintage Trellis Style Engagement Ring 434gm $9,087.00 Time Remaining: 31m Buy It Now for only: $9,087.00 |
 255ctw Excellent I SI1 Round 14k Vintage Trellis Style Three Stone Ring 504gm $7,448.00 Time Remaining: 31m Buy It Now for only: $7,448.00 |
 040 Ct Round Diamond Anniversary Band 14K Yellow Gold $468.18 Time Remaining: 31m Buy It Now for only: $515.93 |
 19 CT Round Cut Solitare Certified Diamond Engagement Ring 14k White Gold $7,700.00 Time Remaining: 31m Buy It Now for only: $7,700.00 |
 Womens 300CT Round Diamond Vintage Antique Wedding Ring Engagement White Gold $999.00 Time Remaining: 31m Buy It Now for only: $1,108.89 |
 SI1 G Genuine 030Ct Round Cut Diamond 14K White Gold Solitaire Engagement Ring $499.00 Time Remaining: 31m Buy It Now for only: $499.00 |
 50Ct Round Diamond Mothers Day Jewelry 14K White Gold Solitaire Studs Earrings $429.00 Time Remaining: 31m Buy It Now for only: $429.00 |
 1 CARAT ROUND DIAMOND Stud Earrings 14K WHITE GOLD STUDS $1,397.00 Time Remaining: 31m Buy It Now for only: $1,397.00 |
 118 ct F G SI1 Barkevs Star Collection Round Cut Diamond Ring in 14K 2Tone Gold $6,934.05 Time Remaining: 32m Buy It Now for only: $6,934.05 |
 600 ct ROUND BRILLIANT CUT DIAMOND TENNIS BRACELET 14k $3,795.00 Time Remaining: 32m Buy It Now for only: $3,795.00 |
 300 ct F SI ROUND CUT Diamond Wedding ETERNITY BAND $4,495.00 Time Remaining: 32m Buy It Now for only: $4,495.00 |
 3 4 CARAT ROUND DIAMOND SOLITAIRE VVS 14K Gold Ring $1,822.95 Time Remaining: 32m Buy It Now for only: $1,822.95 |
 205 CT Natural Round Cut Unique Solitare Diamond Engagement 14k White Gold Ring $6,090.00 Time Remaining: 32m Buy It Now for only: $6,090.00 |
 06 CARAT ROUND E VVS2 100 NATURAL CERTIFIED LOOSE DIAMOND CT $1,135.00 Time Remaining: 32m |
 079 Diamond Wedding Ring Round Setting 18k W Gold s65 Engagement Women $1,371.75 Time Remaining: 32m Buy It Now for only: $1,371.75 |
 127 G SI1 ROUND CUT DIAMOND PLATINUM ENGAGEMENT RING $4,295.00 Time Remaining: 32m Buy It Now for only: $4,295.00 |
 262 CT Round Cut Diamond Bridal Ring Set 14k Gold $5,195.75 Time Remaining: 32m Buy It Now for only: $5,195.75 |
 75ctw Baguette Round DIAMOND Ribbon Cocktail RING 14k White Yellow Gold $499.99 Time Remaining: 32m Buy It Now for only: $499.99 |
 086 Ct Round Diamond Engagement Ring 14K Gold H SI2 $1,164.84 Time Remaining: 33m Buy It Now for only: $1,164.84 |
 159 ct G SI1 ROUND CUT DIAMOND ENGAGEMENT RING 14k WG $5,195.00 Time Remaining: 33m Buy It Now for only: $5,195.00 |
 237 CT Round Cut Bridal Diamond Engagement Ring 14k White Gold $6,494.00 Time Remaining: 33m Buy It Now for only: $6,494.00 |
 051 CT J IF ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $1,649.00 Time Remaining: 33m Buy It Now for only: $1,649.00 |
 052 CT I VS2 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $1,533.00 Time Remaining: 33m Buy It Now for only: $1,533.00 |
 053 CT J VVS2 ROUND GIA CERTIFIED LOOSE DIAMOND $1,635.00 Time Remaining: 33m Buy It Now for only: $1,635.00 |
 060 CT D VS2 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $2,703.00 Time Remaining: 33m Buy It Now for only: $2,703.00 |
 051 CT I IF ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $2,085.00 Time Remaining: 33m Buy It Now for only: $2,085.00 |
 050 CT K VS2 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $1,079.00 Time Remaining: 33m Buy It Now for only: $1,079.00 |
 14K LADIES WOMENS WHITE GOLD ROUND CUT DIAMOND ENGAGEMENT RING BRIDAL FLOWER SET $503.49 Time Remaining: 33m Buy It Now for only: $503.49 |
 078Ct Round Diamond Solitaire Engagement Ring 14K Gold $1,425.00 Time Remaining: 33m Buy It Now for only: $1,425.00 |
 053 CT J VS2 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $1,330.00 Time Remaining: 33m Buy It Now for only: $1,330.00 |
 Diamond Bridal Engagement Ring 090 Ct Round Cut 14K Gold Rize Natural $1,673.65 Time Remaining: 33m Buy It Now for only: $1,673.65 |
 040 F VS2 ROUND CUT DIAMOND ENGAGEMENT RING MOUNTING $1,695.00 Time Remaining: 34m Buy It Now for only: $1,695.00 |
 151 CT Round Cut Vintage Solitare Diamond Engagement Ring 14k Yellow Gold $5,936.00 Time Remaining: 34m Buy It Now for only: $5,936.00 |
 143 ct F G SI1 Barkevs Star Collection Round Cut Diamond Ring in 14K 2Tone Gold $8,720.05 Time Remaining: 34m Buy It Now for only: $8,720.05 |
 075 Ct Vintage Round Cut Diamond 14Kt White Gold Three Stone Wedding Ring Band $699.00 Time Remaining: 34m Buy It Now for only: $699.00 |
 143 CT Round Cut Certified Diamond Solitare Engagement Ring 14k White Gold $3,049.80 Time Remaining: 34m Buy It Now for only: $3,049.80 |
 Round Brilliant Cut Diamond Ring 125ct G SI3 One 14 K Wedding Brilliant Ladies $2,824.00 Time Remaining: 34m Buy It Now for only: $2,824.00 |
 Unique 035Ct Round Diamond Jewelry Two Tone Gold Engagement Wedding Ring Band $299.00 Time Remaining: 34m Buy It Now for only: $299.00 |
 110 ct Round Cut Diamond Engagement Solitaire Ring 18k White Gold $3,500.00 Time Remaining: 35m Buy It Now for only: $3,500.00 |
 142 CT Certified Solitare Round Cut Custom Diamond Engagement Ring 14k WG $2,824.00 Time Remaining: 35m Buy It Now for only: $2,824.00 |
 3 4 Diamond Ring FG Round Semi Mount Pave Platinum s55 Engagement Women $2,749.00 Time Remaining: 35m Buy It Now for only: $2,749.00 |
 104 ct F VS2 ROUND CUT DIAMOND ENGAGEMENT RING 14k WG $2,680.00 Time Remaining: 35m Buy It Now for only: $2,680.00 |
 502ctw Excellent K SI1 Round 14k Vintage Trellis Style Engagement Ring 609gm $19,646.00 Time Remaining: 35m Buy It Now for only: $19,646.00 |
 15CT ROUND CUT DIAMOND NECKLACE WONDERFUL $37.00 (11 Bids) Time Remaining: 35m |
 100 ct Round Diamond Bezel Set Engagement Ring Platinum $3,130.00 Time Remaining: 35m Buy It Now for only: $3,130.00 |
 LADIES 14K WHITE GOLD ROUND CUT DIAMOND ENGAGEMENT RING $1,379.99 Time Remaining: 36m Buy It Now for only: $1,379.99 |
 168 ct F G SI1 Barkevs Star Collection Round Cut Diamond Ring in 14K 2Tone Gold $10,021.55 Time Remaining: 36m Buy It Now for only: $10,021.55 |
 1 3 4 CARAT ROUND DIAMOND ENGAGEMENT RING 14K GOLD $2,862.00 Time Remaining: 36m Buy It Now for only: $2,862.00 |
 8 Carat Round Setting Diamond Tennis Bracelet in 14k White Gold $5,491.00 Time Remaining: 36m Buy It Now for only: $5,491.00 |
 EGL 050 CT Natural Round F G WHITE DIAMOND Solitaire Earrings Studs 14K Gold $1,049.92 Time Remaining: 36m |
 SI1 G 045Ct Round Cut Diamond Jewelry 14Kt Gold Solitaire Engagement Ring Band $829.00 Time Remaining: 37m Buy It Now for only: $829.00 |
 50 ctw Light Champagne Round Brilliant Two Stone Pendant Chain 18 $220.00 Time Remaining: 37m |
 80 Ct Round Diamond Engagement Ring 14K SI EGL COLOR E $3,199.99 Time Remaining: 37m Buy It Now for only: $3,199.99 |
 2 CARAT ROUND DIAMOND SOLITAIRE VS 14K WHITE GOLD RING $17,679.00 Time Remaining: 37m Buy It Now for only: $17,679.00 |
 12 CT Round Cut Natural Diamond Bridal Solitare Engagement Ring 14k White Gold $5,390.00 Time Remaining: 38m Buy It Now for only: $5,390.00 |
 Natural 070C Round Diamond 14K White Gold Eternity Wedding Engagement Ring Band $489.00 Time Remaining: 38m Buy It Now for only: $489.00 |
 14K Gold 025cttw Simply Five Stone Round Diamond Anniversary Mens Band Ring $542.30 Time Remaining: 38m Buy It Now for only: $542.30 |
 14K White Gold 05cttw Split Shank Prong Set Halo Round Diamond Bridal Ring $1,066.99 Time Remaining: 38m Buy It Now for only: $1,066.99 |
 268 CT Round Cut Diamond Bridal Ring Set 14k Gold $5,560.00 Time Remaining: 38m Buy It Now for only: $5,560.00 |
 10K White Gold 012cttw Round Diamond Micro Pave Ring $237.99 Time Remaining: 38m Buy It Now for only: $237.99 |
 10K White Gold 027cttw Classic Elegance Pave Set Black Round Diamond Ring $357.99 Time Remaining: 38m Buy It Now for only: $357.99 |
 030 CT E IF ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $889.00 Time Remaining: 38m Buy It Now for only: $889.00 |
 283ctw Excellent D SI1 Round Diamond 14k Trellis Style Three Stone Ring 385gm $7,821.00 Time Remaining: 38m Buy It Now for only: $7,821.00 |
 100 CT G VS1 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $7,427.00 Time Remaining: 38m Buy It Now for only: $7,427.00 |
 030 CT D VVS2 ROUND GIA CERTIFIED LOOSE DIAMOND $936.00 Time Remaining: 38m Buy It Now for only: $936.00 |
 502ctw Excellent F SI2 Round Diamond 14k Trellis Style Engagement Ring 546gm $20,235.00 Time Remaining: 38m Buy It Now for only: $20,235.00 |
 206 CT L VS1 ROUND HRD CERTIFIED GENUINE LOOSE DIAMOND $12,877.00 Time Remaining: 38m Buy It Now for only: $12,877.00 |
 203 CT F VS1 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $47,890.00 Time Remaining: 38m Buy It Now for only: $47,890.00 |
 060 CT G IF ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $2,894.00 Time Remaining: 38m Buy It Now for only: $2,894.00 |
 060 CT I IF ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $2,352.00 Time Remaining: 38m Buy It Now for only: $2,352.00 |
 034 CT D SI1 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $766.00 Time Remaining: 38m Buy It Now for only: $766.00 |
 030 CT D VS1 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $818.00 Time Remaining: 38m Buy It Now for only: $818.00 |
 247 CT Round Cut Natural Bridal Diamond Engagement Ring Bridal Set 14k WG $9,428.00 Time Remaining: 38m Buy It Now for only: $9,428.00 |
 073 CT H VVS1 ROUND GIA CERTIFIED LOOSE DIAMOND $4,133.00 Time Remaining: 38m Buy It Now for only: $4,133.00 |
 283ctw Very Good D VS2 Round 14k Vintage Trellis Style Anniversary Ring 504gm $9,496.00 Time Remaining: 38m Buy It Now for only: $9,496.00 |
 325ctw Excellent D SI1 Round 14k Vintage Trellis Style Engagement Ring 546gm $12,972.00 Time Remaining: 38m Buy It Now for only: $12,972.00 |
 060 CT J SI1 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $1,402.00 Time Remaining: 38m Buy It Now for only: $1,402.00 |
 506ctw Very Good I SI3 Round Diamond 14k Trellis Style Three Stone Ring 546gm $19,220.00 Time Remaining: 38m Buy It Now for only: $19,220.00 |
 060 CT E VS2 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $2,443.00 Time Remaining: 38m Buy It Now for only: $2,443.00 |
 200ctw Excellent E SI1 Round 14k Vintage Trellis Style Anniversary Ring 420gm $5,069.00 Time Remaining: 38m Buy It Now for only: $5,069.00 |
 255ctw Very Good H SI1 Round 14k Vintage Trellis Style Engagement Ring 504gm $8,180.00 Time Remaining: 38m Buy It Now for only: $8,180.00 |
 232ctw Excellent Blue SI2 Round 14k Vintage Trellis Style Engagement Ring 420g $4,456.00 Time Remaining: 38m Buy It Now for only: $4,456.00 |
 070 CT E SI1 ROUND GIA CERTIFIED GENUINE LOOSE DIAMOND $3,153.00 Time Remaining: 38m Buy It Now for only: $3,153.00 |
 200ctw Ideal G SI1 Round 14k Gold Vintage Trellis Style Anniversary Ring 420gm $6,425.00 Time Remaining: 38m Buy It Now for only: $6,425.00 |
 231ctw Ideal M VS1 Round 14k Gold Vintage Trellis Style Anniversary Ring 420gm $8,503.00 Time Remaining: 39m Buy It Now for only: $8,503.00 |
 283ctw Ideal G SI2 Round 14k Gold Vintage Trellis Style Anniversary Ring 497gm $8,436.00 Time Remaining: 39m Buy It Now for only: $8,436.00 |
 256ctw Excellent D SI1 Round Diamond 14k Trellis Style Engagement Ring 385gm $9,219.00 Time Remaining: 39m Buy It Now for only: $9,219.00 |
 255ctw Very Good Blue SI1 Round 14k Vintage Trellis Style Engagement Ring 504g $5,288.00 Time Remaining: 39m Buy It Now for only: $5,288.00 |
 232ctw Excellent E SI1 Round 14k Vintage Trellis Style Three Stone Ring 420gm $9,335.00 Time Remaining: 39m Buy It Now for only: $9,335.00 |
 325ctw Excellent J SI1 Round 14k Vintage Trellis Style Anniversary Ring 462gm $13,402.00 Time Remaining: 39m Buy It Now for only: $13,402.00 |
 231ctw Ideal Blue SI1 Round 14k Vintage Trellis Style Engagement Ring 420gm $5,151.00 Time Remaining: 39m Buy It Now for only: $5,151.00 |
 510ctw Excellent L VS2 Round Diamond 14k Trellis Style Three Stone Ring 637gm $23,206.00 Time Remaining: 39m Buy It Now for only: $23,206.00 |
 200ctw Very Good H SI3 Round 14k Vintage Trellis Style Engagement Ring 420gm $4,436.00 Time Remaining: 39m Buy It Now for only: $4,436.00 |
 327ctw Excellent F SI3 Round 14k Vintage Trellis Style Three Stone Ring 560gm $9,330.00 Time Remaining: 39m Buy It Now for only: $9,330.00 |
 256ctw Excellent D SI2 Round Diamond 14k Trellis Style Three Stone Ring 385gm $7,427.00 Time Remaining: 39m Buy It Now for only: $7,427.00 |
 282ctw Very Good K VS2 Round Diamond 14k Trellis Style Anniversary Ring 469gm $9,248.00 Time Remaining: 39m Buy It Now for only: $9,248.00 |
 231ctw Ideal H SI2 Round 14k Trellis Style Engagement Ring 357gm Natural Facet $6,279.00 Time Remaining: 39m Buy It Now for only: $6,279.00 |
How easily are other gemstones cut in the shape of a standard round diamond shape?
actual interest is in having a turquoise stone cut in the shape of a round diamond for an engagement ring,,, wanting something original & unique
You can cut turquoise into a round brilliant but it will not hold up as an engagement ring. It will scratch easily and will require re-cutting yearly to maintain it reflective surface. This stone of course will only have surface reflection and no internal brilliance. I would recommend blue zircon for a similar color and it has brilliance similar to a diamond. If you do want to cut a turquoise buy a little larger than you think you want so as you re-cut you will have many years till it is too small to use. You actually don't loose much when you re-polish. Choose a mounting that shows the entire stone, top and bottom to get the most out of this opaque stone.
How to Pick a Round Diamond with High Optics