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Round|Natural|GIA

1.00ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6451475677

Certificate GIA 6451475677

Diamond specifications and retailer prices

From $3,350 SGD
As of November 6, 2026
Save $5,570 SGD (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,920 SGD at Diamond Quarter · As of November 6, 2026
View at Diamond Quarter

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6451475677. Listed at 19 retailers as of November 6, 2026, with prices from $3,350 to $8,920, a $5,570 spread on the same certified stone. Diamond Quarter lists it at $8,920. 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

1.00
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6451475677
Dimensions6.46 × 6.42 × 3.93 mm
L/W Ratio1.01
Top View
6.46 mm6.42 mm1.00 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6451475677
Side View
Table 57.0%Crown 33°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,350 SGD|Low: $3,350 SGD|High: $7,819 SGD|Avg: $4,686 SGD|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1$3,350 SGD
Retailer 8$3,395 SGD
Retailer 2$4,028 SGD
Retailer 9$4,101 SGD
Retailer 3$4,177 SGD
Retailer 10$4,263 SGD
Retailer 4$4,732 SGD
Retailer 5$4,751 SGD
Retailer 7$4,933 SGD
Retailer 6$7,705 SGD

31 data points across 10 retailers

19 retailers$3,350 SGD to $8,920 SGD

A
Cheapest Retailer
-
$3,350 SGD
A
Retailer 2
-
$3,395 SGD
View
B+
Retailer 3
-
$4,028 SGD
View
B+
Retailer 4
-
$4,101 SGD
View
B+
Retailer 5
-
$4,177 SGD
View
B+
Retailer 6
-
$4,263 SGD
View
Final sale: no returns
Retailer 7
-
$4,324 SGD
View
Price last confirmed 109 days ago
Retailer 8
-
$4,620 SGD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$4,620 SGD
View
B+
Retailer 10
-
$4,732 SGD
View
B+
Retailer 11
-
$4,751 SGD
View
B+
Retailer 12
-
$4,797 SGD
View
B+
Retailer 13
-
$4,806 SGD
View
B+
Retailer 14
-
$4,933 SGD
View
B
Retailer 15
-
$5,330 SGD
View
B
Retailer 16
-
$5,405 SGD
View
B
Retailer 17
-
$7,705 SGD
View
B
Retailer 18
-
$8,048 SGD
View
Most Expensive
B
Diamond Quarter
1.0SI2F64778F74N · Nov 6
$8,920 SGD
£5,481 GBP
View
18 more retailers have this diamond
Prices start from $3,350 SGDSave up to $5,570 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
1.00ct Round
$3,350 SGD