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Ian Robinson - Bespoke Gems |
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Precision Cut in the UK |
Large Star of David in Lithium Niobate | |
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'Star of David #3', adapted from a design by Fred van Sant, 61 facets My latest Star of David - a popular design for me. This is cut in the rather rare Lithium Niobate and is most probably the only one presently available worldwide :-). Rather pleased, this rough video does not do it justice - in sunlight this material explodes into a riot of colour. Not easy to do, getting the frosting this even is tricky whilst the Niobate was an absolute sod to polish. I nearly gave up - unfortunately giving up is something I find difficult. Probably took about 40 hours all told. 10% of sale price via this site will be donated to the British charity - World Jewish Relief. No retouching, colour modification nor dust spot removal. |
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Lab-grown Lithium Niobate | 10.76mm x 5.76 deep |
8.3ct | |
£400 |
Y.A.G. Aperture Science | |
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Aperture Science - Design by Arya Akhavan - 49 facets A brilliant cut pavilion for sparkle and dispersion with a large table. This was inspired by a camera aperture? Certainly gives a very bright and rather appealing design especially in darker stones such as this. No retouching, colour modification nor dust spot removal. |
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Lab-grown Yttrium Aluminum Garnet | 9.25x6.41x5.86mm deep |
4,05ct | |
£150 |
London Blue Topaz Ovals | |
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Natural Topaz | 5x4mm |
0.4ct | |
£190 for 100 |
3 Apostates | |
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Design by Ian Robinson. Brilliant cut pavilion and a high crown with 8 narrow frosted parallel-sided facets in a star shape. - vid 3 stones cut in my 'Apostate' design. Blue is lab-grown spinel, clear and yellow are lab-grown sapphire. 20% of sale price via this site will be donated to the charity Humanism UK - link No retouching, colour modification nor dust spot removal. |
Apostate - blue spinel | |
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Design No7 - Apostate A - vid Gorgeous cobalt blue lab grown spinel in my Apostate cut. Brilliant cut pavilion and a high crown with 8 narrow frosted parallel-sided facets in a star shape. Quite a large stone which would make an impressive centrepiece or single setting. This should be easy to set in a round setting. 20% of sale price via this site will be donated to the charity Humanism UK - link |
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Lab grown spinel | 10.5 wide x 6.44mm deep |
4.80ct | |
£250 |
Tears of Elune- pink sapphire | |
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Tears of Elune, design by Arya Akhavan. Cut in light pink sapphire -vid. Nice: shard like narrow pear shape. Somewhat time consuming and fiddly to cut taking me about twice as long as similar pear designs. |
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Lab grown spinel | 13.0x8.7x5.7 deep |
4.15ct | |
£140 |
Apostate - yellow sapphire | |
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Design No7 - Apostate A -vid Light yellow lab grown sapphire in my Apostate cut. Brilliant cut pavilion and a high crown with 8 narrow frosted parallel-sided facets in a star shape. 20% of sale price via this site will be donated to the charity Humanism UK - link |
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Lab grown sapphire | 8.43 wide x5.77mm deep |
3.10ct | |
£220 |
Apostate B - Leuco Sapphire | |
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Design No7 - Apostate B -vid Pure white sapphire in my Apostate cut. Brilliant cut pavilion, the crown has 8 narrow frosted parallel-sided facets in a star shape radiating from a central polished table. 20% of sale price via this site will be donated to the charity Humanism UK - link |
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Leuco Sapphire | 10.0 x 7.0d |
5.30ct | |
£180 or Etsy Shop |
Apostate A - Leuco Sapphire | |
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Design No7 - Apostate A -vid Pure white sapphire in my Apostate cut. Brilliant cut pavilion and a high crown with 8 narrow frosted parallel-sided facets in a star shape. 20% of sale price via this site will be donated to the charity Humanism UK - link |
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Lab-grown white sapphire | 9.64w x 7.61d |
5.70ct | |
£220 or Etsy Shop |
Natural Blue Topaz - Brilliant Pear | |
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Design by Jeff Graham -vid Some slight veil in one corner though not really visible to the naked eye. The Brilliant Pear is designed to cut like a standard round brilliant and look like a pear. The light return is excellent, much better than any traditional pear I've ever seen. Unlike many pear designs, this one employs a centred culet. The pavilion is basically a split mains variation of the SRB with 3 elongated sets of facets, and the crown is also a modification of the SRB pattern. This produces a pleasingly shaped stone with the added attraction that this design can be mounted in standard 4-prong findings and settings designed for round stones. No retouching, colour modification nor dust spot removal. |
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Natural Blue Topaz (irradiated) | 14.1x11.8x7.5deep |
7.75ct | |
£225 or Etsy Shop |
Two pairs of Pink Sapphires - SRB | |
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Standard Round Brilliant - 'Stacked Mains - design by Long & Steele Just a comparison of 2 pairs of sapphires cut in hot pink and lilac-pink sapphire. They are very bright and sparkly, in part due to the quality of polish on the pavilion - the bottom of the stone. No retouching, colour modification nor dust spot removal. |
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Swiss Lab Grown Sapphire | 9-8.6mm wide |
~3.5ct | |
Etsy Shop |
Matched Pair Pink Sapphires - SRB | |
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Standard Round Brilliant - 'Stacked Mains - design by Long & Steele This is a matched pair of precision cut sapphires each of 2.90ct. Would look nice in large drop earrings. Being essentially round (strictly 16 sided) they should be easy to set. They are very bright and sparkly, in part due to the quality of polish on the pavilion - the bottom of the stone. No retouching, colour modification nor dust spot removal. |
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Swiss Lab Grown Sapphire | 8.25w, 5.6d |
2.9,2.9ct | |
£300 or via Etsy Shop |
3 Iron Crosses | |
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Brilliant cut square with frosted facets showing an Iron Cross - vid Design by Ian Robinson, 41 facets. 3 gemstones cut in my 'Iron Cross' design. Blue is lab-grown spinel, black is natural black spinel, clear is lab-grown 'white' sapphire. No retouching, colour modification nor dust spot removal. |
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Etsy Shop |
Zircon Spinel - Iron Cross | |
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Brilliant cut square with frosted facets showing an Iron Cross - vid Design by Ian Robinson, 41 facets. Having cut a number of cross designs I was looking for one that was simple and bold where the design could be clearly seen without magnification. This seems to work well and has attracted a lot of interest. The Iron Cross has been a German military award from 1877 to the present and its design may be traced back to the cross pattée of the 11th century Teutonic Knights of Jerusalem and earlier. No retouching, colour modification nor dust spot removal. |
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Swiss Lab Grown Spinel | 10.5w, 7.45d |
6.80ct | |
£200 or Etsy Shop |
Pink Sapphire Pair - 'Hanami 花見 ' | |
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Design by Marco Voltolini, 66 facets Hanami (花見, "flower viewing") is the Japanese traditional custom of enjoying the transient beauty of flowers Another interesting design by Marco Voltolini. 'Hanami' is modelled on a cherry blossom. A set of tiers is left frosted with the 'petals' polished. A delicate subtle cut! |
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lab-grown Sapphire | 7.89w x 5.9-6.2d |
3.10 & 3.35ct | |
£275 or Etsy Shop |
Bolivian Ametrine - Square Brilliant | |
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Classic Square Brilliant Cut Came out rather nice Strictly approx 1/3rd of stone is amethyst with 2/3rds being citrine. Under normal lighting the internal reflections tend to make the effect more symmetrical. No retouching, colour modification or dust spot removal. |
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Natural Ametrine | 9.8w, 7.7d |
4.30ct | |
£120 or Etsy Shop |
Lithium Tantalate - Brilliant Rectangular Cut V.Rare | |
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Lithium Tantalate is a labgrown ceramic occasionally used in specialised semiconductor sensors. Very rare this piece is a legacy of the soviet defence industry. With a high refractive index (2.2) similar to that of diamond and crazy high dispersion - three times diamond's this is a very attractive material. With such high dispersion one sees rainbows in direct light. Super - If you can get any! To the best of my knowledge this is the only Tantalate gemstone presently for sale worldwide. The stone is cut with a brilliant pavilion (bottom) and a step cut crown. No retouching, colour modification or dust spot removal. |
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Lithium Tantalate | 8.6 x 6.2mm |
4.45ct | |
£320 or Etsy Shop |
Oxford Museum Stone #2 | |
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adapted from Thank You Bern'd by Marco Voltolini This was cut in lemon quartz, likely natural (not irradiated) as from 1974 stock. Two bubbles are carved into the bottom giving rise to interesting reflections. Cut for U.K. Facet Cutter's Guild display in Oxford University Museum of Natural History. No retouching, colour modification or dust spot removal. |
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Lemon Quartz | ~12 x 7mm |
Not for sale |
Oxford Museum Stone #1 | |
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'Chrysanthemum', by Quincy D Howell, 81 facets Cut in Rose De France (light Amethyst). Marking are internal to the stone due to reflections from a small veil - I think this adds interest :-) Cut for U.K. Facet Cutter's Guild display in Oxford University Museum of Natural History. No retouching, colour modification or dust spot removal. |
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Rose De France | ~12.1 x 7.9mm |
6.15ct | |
Not for sale |
Blue Topaz - Geometric Etude No 1 | |
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'Geometric Etude No 1', adapted from a design by Arya Akhavan, 49 facets Very hard to photograph well. No retouching, colour modification or dust spot removal. |
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Natural Topaz (irradiated) | 7.9w x 6.0d |
2.70ct | |
£145 or Etsy Shop |
Natural Tourmaline - 'Emerald Cut' | |
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'Gram Emerald', Design by Jeff Graham, 45 facets. Cut in dark moss green natural tourmaline. This is not the highest quality tourmaline hence the low price. However the cut is certainly to at least my usual standard. The stone is eye clean and large enough to form the centrepiece of a pendant. The video on youtube may give a better impression than the photo above No retouching, colour modification or dust spot removal. |
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Natural Green Tourmaline | 11.52 x 6.07w x 6.11d |
6.15ct | |
£130 or Etsy Shop |