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Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 5426197929

Certificate GIA 5426197929

Diamond specifications and retailer prices

From $3,691 SGD
As of November 6, 2026
Save $6,445 SGD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,136 SGD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5426197929. Listed at 19 retailers as of November 5, 2026, with prices from $3,691 to $10,136, a $6,445 spread on the same certified stone. Diamond Quarter lists it at $10,136. 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

1.05
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5426197929
Dimensions6.55 × 6.54 × 4.02 mm
L/W Ratio1.00
Top View
6.55 mm6.54 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5426197929
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.5%

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: $6,044 SGD|Low: $3,458 SGD|High: $8,382 SGD|Avg: $5,057 SGD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 6$3,691 SGD
Retailer 2$3,818 SGD
Retailer 8$4,140 SGD
Retailer 7$4,216 SGD
Retailer 10$4,659 SGD
Retailer 4$4,984 SGD
Retailer 9$5,305 SGD
Retailer 3$5,751 SGD
Retailer 1$6,044 SGD
Retailer 5$8,283 SGD

43 data points across 10 retailers

19 retailers$3,691 SGD to $10,136 SGD

A
Cheapest Retailer
-
$3,691 SGD
B+
Retailer 2
-
$4,140 SGD
View
Final sale: no returns
B+
Retailer 3
-
$4,214 SGD
View
B+
Retailer 4
-
$4,216 SGD
View
Retailer 5
-
$4,487 SGD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$4,487 SGD
View
B+
Retailer 7
-
$4,659 SGD
View
B+
Retailer 8
-
$4,984 SGD
View
B+
Retailer 9
-
$5,046 SGD
View
B+
Retailer 10
-
$5,075 SGD
View
B+
Retailer 11
-
$5,075 SGD
View
B+
Retailer 12
-
$5,176 SGD
View
B+
Retailer 13
-
$5,255 SGD
View
Retailer 14
-
$5,305 SGD
View
Price last confirmed 30 days ago
B
Retailer 15
-
$5,751 SGD
View
B
Retailer 16
-
$6,044 SGD
View
B
Retailer 17
-
$8,283 SGD
View
B
Retailer 18
-
$8,628 SGD
View
Most Expensive
B
Diamond Quarter
1.05SI1F5429FE07N · Nov 5
$10,136 SGD
£6,228 GBP
View
18 more retailers have this diamond
Prices start from $3,691 SGDSave up to $6,445 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
1.05ct Round
$3,691 SGD