| 14.70ct Pear Cut Yellow Diamond Pendant | gcollinsandsons.com | 3680000 GBP | 0 GBP | — |
| 20.52ct Radiant Cut Yellow Diamond Ring With Diamond Set Shoulders | gcollinsandsons.com | 1185000 GBP | 0 GBP | — |
| 20.06ct Emerald Cut Diamond Pendant | gcollinsandsons.com | 1180000 GBP | 0 GBP | — |
| 14.78ct Paraiba Tourmaline Pendant | gcollinsandsons.com | 960000 GBP | 0 GBP | — |
| 36.77ct Spessartite Mandarin Garnet Ring | gcollinsandsons.com | 928000 GBP | 0 GBP | — |
| Sienna Star Yellow Diamond Drop Earrings | gcollinsandsons.com | 660000 GBP | 0 GBP | — |
| 7.24ct Marquise Cut Diamond Solitaire Ring | gcollinsandsons.com | 588500 GBP | 0 GBP | — |
| 6.01ct Cushion Cut Diamond Ring With Diamond Set Shoulders and Bezels | gcollinsandsons.com | 565000 GBP | 0 GBP | — |
| Emerald Cut Diamond Drop Earrings | gcollinsandsons.com | 565000 GBP | 0 GBP | — |
| Emerald Cut Diamond Two Stone Pendant | gcollinsandsons.com | 545000 GBP | 0 GBP | — |
| 8.51ct Oval Cut Diamond 18ct Yellow Gold Ring | gcollinsandsons.com | 520000 GBP | 0 GBP | — |
| Emerald Cut Diamond Platinum Drop Earrings | gcollinsandsons.com | 392000 GBP | 0 GBP | — |
| Emerald and Diamond Three Stone Ring | gcollinsandsons.com | 380000 GBP | 0 GBP | — |
| 5.03ct Cushion Cut Diamond Ring With Diamond Set Shoulders and Bezels | gcollinsandsons.com | 260000 GBP | 0 GBP | — |
| 31.30ct Fancy Pear Diamond Necklet | gcollinsandsons.com | 238000 GBP | 0 GBP | — |
| 8.17ct Yellow Diamond Slide On/Off Drop Earrings | gcollinsandsons.com | 232000 GBP | 0 GBP | — |
| Sapphire Pendant Running On a Diamond Line Necklace | gcollinsandsons.com | 200000 GBP | 0 GBP | — |
| 8.21ct Cushion Cut Yellow Diamond Drop Earrings | gcollinsandsons.com | 185000 GBP | 0 GBP | — |
| Emerald Cut Diamond Line Bracelet | gcollinsandsons.com | 180000 GBP | 0 GBP | — |
| 3.56ct Oval Cut Diamond Ring With Diamond Set Shoulders and Bezels | gcollinsandsons.com | 165000 GBP | 0 GBP | — |
| Art Deco Onyx and Diamond Bracelet | gcollinsandsons.com | 150000 GBP | 0 GBP | — |
| Yellow and White Diamond Two Stone Pendant | gcollinsandsons.com | 138500 GBP | 0 GBP | — |
| 3.34ct Emerald Cut Diamond Solitaire Ring | gcollinsandsons.com | 122500 GBP | 0 GBP | — |
| 3.02ct Cushion Cut Diamond Solitaire Pendant | gcollinsandsons.com | 115000 GBP | 0 GBP | — |
| Opal Infinity 18ct Yellow Gold Necklace | gcollinsandsons.com | 110000 GBP | 0 GBP | — |
| 18.27ct Asscher Cut Diamond Line Bracelet | gcollinsandsons.com | 98000 GBP | 0 GBP | — |
| 14.57ct Three Row Diamond Wave Ring | gcollinsandsons.com | 92500 GBP | 0 GBP | — |
| 4.10ct Cushion Cut Diamond 'Toi et Moi' Ring | gcollinsandsons.com | 87500 GBP | 0 GBP | — |
| Diamond Cosmic Earrings | gcollinsandsons.com | 85100 GBP | 0 GBP | — |
| Round Brilliant Cut Diamond Choker | gcollinsandsons.com | 85000 GBP | 0 GBP | — |
| 4.04ct Yellow Diamond Two Stone Ring | gcollinsandsons.com | 75000 GBP | 0 GBP | — |
| Yellow Diamond 18ct Yellow Gold Ring | gcollinsandsons.com | 74500 GBP | 0 GBP | — |
| 9.93ct Three Row Diamond Wave Ring | gcollinsandsons.com | 72500 GBP | 0 GBP | — |
| 4.10ct Cushion Cut Diamond Drop Earrings | gcollinsandsons.com | 72400 GBP | 0 GBP | — |
| Pear and Marquise Cut Diamond Cluster Earrings | gcollinsandsons.com | 70200 GBP | 0 GBP | — |
| 18ct Yellow Gold Emerald Pendant | gcollinsandsons.com | 70000 GBP | 0 GBP | — |
| Cartier Diamond Necklet | gcollinsandsons.com | 70000 GBP | 0 GBP | — |
| 14.14ct Emerald Cut Diamond Flex Bracelet | gcollinsandsons.com | 70000 GBP | 0 GBP | — |
| 9.60ct Two Row Diamond Wave Ring | gcollinsandsons.com | 68000 GBP | 0 GBP | — |
| Emerald Cut Diamond Line Necklace | gcollinsandsons.com | 66000 GBP | 0 GBP | — |