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Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6555414004

Certificate GIA 6555414004

Diamond specifications and retailer prices

From $2,019 SGD
As of November 5, 2026
Save $3,944 SGD (66%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,964 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555414004. Listed at 16 retailers as of November 5, 2026, with prices from $2,019 to $5,964, a $3,944 spread on the same certified stone. NZ Jewellers lists it at $5,964. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555414004
Dimensions6.32 × 6.37 × 3.96 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural, Natural
Top View
6.32 mm6.37 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555414004
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

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 5
Current: $5,964 SGD|Low: $1,913 SGD|High: $5,964 SGD|Avg: $2,667 SGD|+25.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 16$2,019 SGD
Retailer 3$2,137 SGD
Retailer 15$2,166 SGD
Retailer 4$2,215 SGD
Retailer 8$2,215 SGD
Retailer 17$2,304 SGD
Retailer 7$2,317 SGD
Retailer 9$2,335 SGD
Retailer 2$2,372 SGD
Retailer 5$2,389 SGD
Retailer 14$2,556 SGD
Retailer 6$2,558 SGD
Retailer 10$2,639 SGD
Retailer 13$3,141 SGD
Retailer 12$3,541 SGD
Retailer 11$4,273 SGD
NZ Jewellers$5,964 SGD

18 data points across 17 retailers

16 retailers$2,019 SGD to $5,964 SGD

A
Cheapest Retailer
-
$2,019 SGD
A
Retailer 2
-
$2,137 SGD
View
A
Retailer 3
-
$2,166 SGD
View
B+
Retailer 4
-
$2,215 SGD
View
B+
Retailer 5
-
$2,304 SGD
View
B+
Retailer 6
-
$2,317 SGD
View
Retailer 7
-
$2,335 SGD
View
Price last confirmed 22 days ago
B+
Retailer 8
-
$2,372 SGD
View
B+
Retailer 9
-
$2,389 SGD
View
B+
Retailer 10
-
$2,556 SGD
View
B+
Retailer 11
-
$2,558 SGD
View
B
Retailer 12
-
$2,639 SGD
View
B
Retailer 13
-
$3,141 SGD
View
B
Retailer 14
-
$3,541 SGD
View
B
Retailer 15
-
$4,273 SGD
View
Most Expensive
C
NZ Jewellers
7b1f8c66-e901-4452-839e-81f03380d61d · Nov 5
$5,964 SGD
$4,669 USD
View
15 more retailers have this diamond
Prices start from $2,019 SGDSave up to $3,944 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
$2,019 SGD