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1.40ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6495251546

Certificate GIA 6495251546

Diamond specifications and retailer prices

From $16,831 SGD
£10,367 GBP
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $16,831 SGD at Diamond Quarter
View at Diamond Quarter

About this 1.4ct natural round diamond

This 1.4ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6495251546. Listed at 2 retailers as of October 29, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.40
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6495251546
Dimensions7.18 × 7.21 × 4.43 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.18 mm7.21 mm1.40 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6495251546
Side View
Table 58.0%Crown 32.5°Girdle: THN-STKPavilion 41.6°Culet: NoneDepth 61.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $8,577 SGD|Low: $7,420 SGD|High: $12,752 SGD|Avg: $8,910 SGD|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 23, 2026
Retailer 6$7,420 SGD
Retailer 5$7,973 SGD
Retailer 2$8,120 SGD
Retailer 1$8,577 SGD
Retailer 4$10,305 SGD
Retailer 3$12,734 SGD

7 data points across 6 retailers

2 retailers

Retailer 1
-
$14,456 SGD
$11,308 USD
Price last confirmed 39 days ago
Most Expensive
B
Diamond Quarter
1.4SI2D6446DE78N · Oct 29
$16,831 SGD
£10,367 GBP
View
1 more retailer has this diamond

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.40ct Round
$16,831 SGD