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Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 1558729376

Certificate GIA 1558729376

Diamond specifications and retailer prices

From $4,001 SGD
As of November 4, 2026
Save $5,070 SGD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,071 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 1558729376. Listed at 16 retailers as of November 4, 2026, with prices from $4,001 to $9,071, a $5,070 spread on the same certified stone. NZ Jewellers lists it at $9,071. 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
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1558729376
Dimensions6.42 × 6.46 × 4.03 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.42 mm6.46 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558729376
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $5,240 SGD|Low: $3,764 SGD|High: $8,707 SGD|Avg: $5,080 SGD|-10.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 5$4,001 SGD
Retailer 10$4,141 SGD
Retailer 3$4,482 SGD
Retailer 4$4,718 SGD
Retailer 12$4,718 SGD
Retailer 8$4,898 SGD
Retailer 2$5,132 SGD
Retailer 1$5,240 SGD
Retailer 11$5,443 SGD
Retailer 7$5,697 SGD
Retailer 13$5,893 SGD
Retailer 6$6,355 SGD
Retailer 9$8,707 SGD

40 data points across 13 retailers

16 retailers$4,001 SGD to $9,071 SGD

B+
Cheapest Retailer
-
$4,001 SGD
B+
Retailer 2
-
$4,069 SGD
View
B+
Retailer 3
-
$4,141 SGD
View
Final sale: no returns
B+
Retailer 4
-
$4,482 SGD
View
B+
Retailer 5
-
$4,718 SGD
View
B+
Retailer 6
-
$4,718 SGD
View
B+
Retailer 7
-
$4,898 SGD
View
B+
Retailer 8
-
$5,132 SGD
View
B+
Retailer 9
-
$5,132 SGD
View
B+
Retailer 10
-
$5,240 SGD
View
B+
Retailer 11
-
$5,443 SGD
View
B+
Retailer 12
-
$5,697 SGD
View
B
Retailer 13
-
$6,123 SGD
View
B
Retailer 14
-
$6,355 SGD
View
B
Retailer 15
-
$8,707 SGD
View
Most Expensive
B
NZ Jewellers
9e420a83-dc25-4924-8280-fa19a2fa8ce1 · Nov 5
$9,071 SGD
$7,078 USD
View
15 more retailers have this diamond
Prices start from $4,001 SGDSave up to $5,070 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.

B+
1.05ct Round
$4,001 SGD