Top 50 Diamonds by Certification Score in Singapore
Ranked by certificate rigour. GIA and AGS stones with complete grading, clear symmetry, and verified provenance come out on top. Pricing shown in SGD.
Last updated 31 July 2026 · Based on 50 active listings ranked by certification
What Certification Score Rewards
Certification score measures the rigour and completeness of the grading report behind each diamond. It weights the grading lab (GIA and AGS lead; IGI and HRD follow; newer or less-consistent labs are lower), the presence of a polish and symmetry grade (required for Excellent-cut claims), and the completeness of the proportions data. It's not measuring the diamond itself. It's measuring how confident you can be that the grades on paper match what you'll receive.
Use this list when you're buying at a price point where certification rigour matters most. Say, above $10,000, or when the stone will be insured, resold, or given as a gift with a certificate presentation. The top of this list is where the paper trail is strongest: full GIA reports with polish and symmetry grades, complete measurement data, and a clean provenance.
A high certification score doesn't mean the stone is beautiful. It just means the grading is trustworthy. Cross-reference with quality score for stones that are both well-documented and well-made. For lab-grown, IGI tops this list more often than GIA because IGI has become the default lab-grown certifier and has the most complete reports for that segment.
| # | Diamond | Origin | Score | Lowest Price (SGD) |
|---|---|---|---|---|
| 1 | 1.64ct ROUND FANCY I2 | natural | 99 | $5,703 SGD |
| 2 | 0.45ct ROUND FANCY I1 | natural | 99 | $1,274 SGD |
| 3 | 5.59ct ROUND FANCY SI2 | natural | 98 | $55,006 SGD |
| 4 | 5.50ct ROUND FANCY SI2 | natural | 98 | $63,140 SGD |
| 5 | 4.00ct ROUND FANCY I2 | natural | 98 | $26,077 SGD |
| 6 | 3.53ct PEAR FANCY SI2 | natural | 98 | $17,054 SGD |
| 7 | 2.15ct ROUND FANCY VVS1 | natural | 98 | $101,529 SGD |
| 8 | 1.51ct RADIANT FANCY VVS1 | natural | 98 | $13,673 SGD |
| 9 | 1.50ct PEAR FANCY VVS2 | natural | 98 | $18,720 SGD |
| 10 | 1.32ct ROUND FANCY SI1 | natural | 98 | $8,283 SGD |
| 11 | 1.31ct RADIANT FANCY IF | natural | 98 | $11,350 SGD |
| 12 | 1.11ct OVAL FANCY VVS1 | natural | 98 | $15,977 SGD |
| 13 | 1.10ct RADIANT FANCY VVS1 | natural | 98 | $6,568 SGD |
| 14 | 1.02ct ROUND FANCY SI2 | natural | 98 | $2,094 SGD |
| 15 | 1.01ct PEAR FANCY VVS2 | natural | 98 | $9,013 SGD |
| 16 | 1.00ct HEART FANCY VS2 | natural | 98 | $3,247 SGD |
| 17 | 0.70ct OVAL FANCY VS1 | natural | 98 | $2,293 SGD |
| 18 | 0.40ct OVAL FANCY I1 | natural | 98 | $1,543 SGD |
| 19 | 0.38ct ROUND N SI1 | natural | 98 | $480 SGD |
| 20 | 0.36ct ROUND FANCY SI2 | natural | 98 | $1,389 SGD |
| 21 | 0.34ct ROUND FANCY VVS2 | natural | 98 | $1,312 SGD |
| 22 | 0.34ct OVAL FANCY VS2 | natural | 98 | $3,286 SGD |
| 23 | 0.31ct ROUND FANCY SI2 | natural | 98 | $4,044 SGD |
| 24 | 0.27ct ROUND FANCY I1 | natural | 98 | $2,796 SGD |
| 25 | 1.33ct ROUND FANCY VS2 | natural | 97 | $9,379 SGD |
| 26 | 10.96ct PEAR FAINT PINK IF | natural | 96 | $1,582,437 SGD |
| 27 | 5.53ct RADIANT FANCY VS2 | natural | 96 | $118,453 SGD |
| 28 | 3.49ct ROUND D FL | lab grown | 96 | $18,369 SGD |
| 29 | 3.08ct ROUND K VVS1 | natural | 96 | $28,314 SGD |
| 30 | 2.50ct ROUND L VS1 | natural | 96 | $17,123 SGD |
| 31 | 2.23ct ROUND K IF | natural | 96 | $20,375 SGD |
| 32 | 2.09ct PEAR FANCY VS1 | natural | 96 | $10,312 SGD |
| 33 | 2.07ct CUSHION FANCY SI1 | natural | 96 | $34,829 SGD |
| 34 | 1.80ct OVAL L SI2 | natural | 96 | $7,595 SGD |
| 35 | 1.72ct OVAL K SI2 | natural | 96 | $8,256 SGD |
| 36 | 1.71ct ASSCHER K VS2 | natural | 96 | $5,764 SGD |
| 37 | 1.53ct ROUND L SI1 | natural | 96 | $4,115 SGD |
| 38 | 1.51ct ROUND L VS1 | natural | 96 | $3,521 SGD |
| 39 | 1.51ct ROUND L SI1 | natural | 96 | $6,531 SGD |
| 40 | 1.50ct OVAL L SI2 | natural | 96 | $5,659 SGD |
| 41 | 1.50ct ROUND L SI2 | natural | 96 | $6,012 SGD |
| 42 | 1.50ct PEAR FANCY VS1 | natural | 96 | $6,225 SGD |
| 43 | 1.01ct CUSHION K VVS2 | natural | 96 | $1,784 SGD |
| 44 | 1.01ct HEART K VS2 | natural | 96 | $1,943 SGD |
| 45 | 1.01ct PEAR FANCY SI2 | natural | 96 | $2,100 SGD |
| 46 | 1.01ct PEAR FANCY SI1 | natural | 96 | $3,925 SGD |
| 47 | 1.01ct CUSHION FANCY SI2 | natural | 96 | $6,517 SGD |
| 48 | 0.90ct ROUND K VS1 | natural | 96 | $2,192 SGD |
| 49 | 0.79ct OVAL FANCY VS1 | natural | 96 | $17,364 SGD |
| 50 | 0.70ct HEART FANCY SI2 | natural | 96 | $1,724 SGD |
Compare prices across 100+ retailers worldwide. Find the best deal on your perfect diamond.