CaratHunter
Plans
Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6422805013

Certificate GIA 6422805013

Diamond specifications and retailer prices

From $2,231 SGD
As of November 6, 2026
Save $3,468 SGD (61%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,699 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 6422805013. Listed at 17 retailers as of November 5, 2026, with prices from $2,231 to $5,699, a $3,468 spread on the same certified stone. NZ Jewellers lists it at $5,699. 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
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6422805013
Dimensions6.39 × 6.33 × 4.00 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.39 mm6.33 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6422805013
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $5,699 SGD|Low: $2,231 SGD|High: $5,699 SGD|Avg: $2,988 SGD
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
November 6, 2026
Retailer 4$2,231 SGD
Retailer 12$2,280 SGD
Retailer 5$2,381 SGD
Retailer 13$2,469 SGD
Retailer 16$2,469 SGD
Retailer 6$2,551 SGD
Retailer 15$2,584 SGD
Retailer 2$2,644 SGD
Retailer 14$2,708 SGD
Retailer 3$2,718 SGD
Retailer 7$2,850 SGD
Retailer 8$2,857 SGD
Retailer 9$2,944 SGD
Retailer 10$3,502 SGD
Retailer 11$4,762 SGD
NZ Jewellers$5,699 SGD

28 data points across 16 retailers

17 retailers$2,231 SGD to $5,699 SGD

B+
Cheapest Retailer
-
$2,231 SGD
B+
Retailer 2
-
$2,280 SGD
View
B+
Retailer 3
-
$2,381 SGD
View
Retailer 4
-
$2,469 SGD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$2,469 SGD
View
B+
Retailer 6
-
$2,551 SGD
View
B+
Retailer 7
-
$2,584 SGD
View
B+
Retailer 8
-
$2,644 SGD
View
B+
Retailer 9
-
$2,667 SGD
View
B+
Retailer 10
-
$2,708 SGD
View
B+
Retailer 11
-
$2,718 SGD
View
B
Retailer 12
-
$2,850 SGD
View
B
Retailer 13
-
$2,857 SGD
View
B
Retailer 14
-
$2,944 SGD
View
B
Retailer 15
-
$3,502 SGD
View
B
Retailer 16
-
$4,762 SGD
View
Most Expensive
C
NZ Jewellers
01c352bc-f1d1-41cf-8e2a-01090afa6836 · Nov 5
$5,699 SGD
$4,462 USD
View
16 more retailers have this diamond
Prices start from $2,231 SGDSave up to $3,468 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+
1.00ct Round
$2,231 SGD