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Commercial Diamonds
Authenticity verification and quality grading unmounted diamond, applying the GIA grading system.
(Fee according to Diamond Price Table).
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Follow-up Grading of Repolished Diamonds
(Fee according to Diamond Price Table with 50% reduction*)
*applicable only upon return of previous original report
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Diamond Identification Using Infra-Red Spectrometer
(Fee according to Diamond Price Table with SGD100 surcharge)
Diamond Price Guide |
Weight in Carat |
Fee in Singapore $ |
Up to 0.99 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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Authenticity determination of natural gemstones, respectively identification of synthetic and imitation stones.
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Natural Gemstones
Authenticity determination and identification of treatment like heat treatment, diffusion process glassy filling in ruby and sapphire.
(Fee according to Gemstones Price Table).
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 of Jadeite-Jade
Further test on treatment using infra-red spectrometer to identify the presence polymer.
(Fee according to Diamond Price Table with surcharge of SGD100).
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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Express testing (within one working day)
(Fee according to Gemstones Price Table with surcharge of SGD150).
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Ring, Pendant, Bracelet
(Fee according to Gemstones Price Table).
Estate Appraisal
Depend on the amount, price negotiable.
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