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Round|Natural|GIA

1.00ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6505412227

Certificate GIA 6505412227

Diamond specifications and retailer prices

From $2,060 SGD
As of November 4, 2026
Save $3,553 SGD (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,614 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505412227. Listed at 16 retailers as of November 4, 2026, with prices from $2,060 to $5,614, a $3,553 spread on the same certified stone. NZ Jewellers lists it at $5,614. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle31.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6505412227
Dimensions6.47 × 6.43 × 3.92 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.47 mm6.43 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6505412227
Side View
Table 59.0%Crown 31.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.8%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $2,202 SGD|Low: $2,018 SGD|High: $4,081 SGD|Avg: $2,628 SGD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11$2,060 SGD
Retailer 3$2,097 SGD
Retailer 10$2,133 SGD
Retailer 1$2,202 SGD
Retailer 12$2,309 SGD
Retailer 2$2,376 SGD
Retailer 4$2,408 SGD
Retailer 8$2,539 SGD
Retailer 5$2,668 SGD
Retailer 7$2,809 SGD
Retailer 6$3,118 SGD
Retailer 9$4,021 SGD

37 data points across 12 retailers

16 retailers$2,060 SGD to $5,614 SGD

A
Cheapest Retailer
-
$2,060 SGD
A
Retailer 2
-
$2,097 SGD
View
A
Retailer 3
-
$2,133 SGD
View
A
Retailer 4
-
$2,202 SGD
View
Retailer 5
-
$2,302 SGD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$2,302 SGD
View
B+
Retailer 7
-
$2,309 SGD
View
B+
Retailer 8
-
$2,376 SGD
View
B+
Retailer 9
-
$2,408 SGD
View
B+
Retailer 10
-
$2,539 SGD
View
B+
Retailer 11
-
$2,656 SGD
View
B+
Retailer 12
-
$2,668 SGD
View
B+
Retailer 13
-
$2,809 SGD
View
B
Retailer 14
-
$3,118 SGD
View
B
Retailer 15
-
$4,021 SGD
View
Most Expensive
B
NZ Jewellers
86dc830f-720d-427e-b48b-c56f5dd959f7 · Nov 5
$5,614 SGD
$4,395 USD
View
15 more retailers have this diamond
Prices start from $2,060 SGDSave up to $3,553 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
$2,060 SGD