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1.29ct F SI1 Round Natural Diamond

ID • F/SI1 • GIA 246

Certificate GIA 246

Diamond specifications and retailer prices

From $5,657 SGD
$4,424 USD
As of October 28, 2026
Save $1,210 SGD (18%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $6,868 SGD at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 1.29ct natural round diamond

This 1.29ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 2 retailers as of October 28, 2026, with prices from $5,657 to $6,868, a $1,210 spread on the same certified stone. Blue Nile lists it at $6,868. 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

1.29
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 246
Dimensions6.90 × 6.95 × 4.35 mm
L/W Ratio1.01
Top View
6.90 mm6.95 mm1.29 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 246
Side View
Table 56.0%CrownGirdle: Medium to Slightly ThickPavilionCulet: NDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $6,868 SGD|Low: $5,657 SGD|High: $7,343 SGD|Avg: $6,464 SGD|-6.5%
Blue Nile
Retailer 2
October 28, 2026
Retailer 2$5,657 SGD
Blue Nile$6,868 SGD

7 data points across 2 retailers

2 retailers$5,657 SGD to $6,868 SGD

A
Cheapest Retailer
-
$5,657 SGD
$4,424 USD
Most Expensive
B
Blue Nile
29883349 · Oct 29
$6,868 SGD
$5,370 USD
View
1 more retailer has this diamond
Prices start from $5,657 SGDSave up to $1,210 SGD

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.

A
1.29ct Round
$5,657 SGD