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Authenticity verification and quality grading of unmounted diamond, applying the GIA grading system. Grading services include testing to determine whether material is a diamond, and whether it is natural or synthetic. All diamonds are tested for laser drilling, fracture filling, irradiation, and high pressure/high temperature (HPHT).
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Diamond Price Guide |
Weight in Carat |
Fee in Singapore $ |
Up to 1.49 ct |
$150/- |
1.50 to 1.99 ct |
$250/- |
2.00 to 2.99 ct |
$350/- |
3.00 to 4.99 ct |
$450/- |
5.00 to 6.99 ct |
$750/- |
7.00 to 9.99 ct |
$1,000/- |
10.00 to 14.99 ct |
$1,500/- |
15.00 to 19.99 ct |
$2,000/- |
20.00 to 29.99 ct |
$3,000/- |
50.00 to 99.99 ct |
$4,000/- |
100.00 & above |
$5,000/- |
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The gemstone Identification report professionally documents the results of a full examination of a material. The results detailed will identify the material examined giving such identifying characteristics as
colour, clarity/transparency, shape, cut, dimensions, weight and a coloured photo. The report will also
state whether it is natural or synthetic and if the material has been treated to enhance its
Appearance by an identifiable treatment (Heat treatment, diffusion processes, glassy filling, etc.). It will also be noted if it is a simulant with no known
Natural counterpart, or if it has been assembled from two or more separate components.
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Gemstones Price Guide |
Weight in Carat |
Fee in Singapore $ |
Up to 5.00 ct |
$150/- |
5.01 to 9.99 ct |
$250/- |
10.00 to 19.99 ct |
$350/- |
20.00 to 39.99 ct |
$550/- |
40.00 to 49.99 ct |
$750/- |
50.00 & above |
$1,000/- |
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Identification / Testing of Jadeite-Jade
The jade identification (Jade test) report professionally documents the results of a full examination of a material. The results detailed will identify the material examined giving such identifying characteristics as
colour, clarity/transparency, shape, cut, dimensions, weight and a coloured photo. The report will also state whether it is natural without any treatment (A-Jade) or if the material has been treated to enhance its appearance by an identifiable treatment (polymer impregnation known as B-Jade, dyeing of colour also known as C-Jade, or both B+C-Jade). It will also be noted if it is a simulant with no known natural counterpart, or if it has been assembled from two or more separate components also known as D-Jade.
Jadeite-Jade Price Guide |
Type of Item |
Fee in Singapore $ |
Ring |
$150 - $300 |
Pendant |
$150 - $200 |
Bangle |
$200 - $300 |
Others (Earrings, bead necklace etc.) |
$150 onwards |
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The jewellery appraisal report would include the following approximate identifying characteristics such as color, clarity/transparency, shape, cut, dimensions and approximate weight of all the gemstones / diamonds / jade / pearls together with a coloured photo.
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Jewellery Appraisal Report Guide |
Type of Item |
Fee in Singapore $ |
Ring |
From $150 onwards depending each piece of jewellery. |
Pendant |
Bangle |
Others (Earrings, bead necklace etc.) |
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