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Round|Natural|GIA

1.03ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1559549275

Certificate GIA 1559549275

Diamond specifications and retailer prices

From $2,166 SGD
As of November 4, 2026
Save $3,557 SGD (62%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,724 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct 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 1559549275. Listed at 6 retailers as of November 4, 2026, with prices from $2,166 to $5,724, a $3,557 spread on the same certified stone. NZ Jewellers lists it at $5,724. 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

1.03
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559549275
Dimensions6.43 × 6.46 × 4.01 mm
L/W Ratio1.00
Star length50%
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Cloud, Feather
Top View
6.43 mm6.46 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1559549275
Side View
Table 58.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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 4
Current: $5,724 SGD|Low: $1,804 SGD|High: $5,724 SGD|Avg: $3,332 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$2,166 SGD
Retailer 6$2,369 SGD
Retailer 3$2,717 SGD
Retailer 2$3,008 SGD
Retailer 4$4,100 SGD
NZ Jewellers$5,724 SGD

26 data points across 6 retailers

6 retailers$2,166 SGD to $5,724 SGD

A
Cheapest Retailer
-
$2,166 SGD
Final sale: no returns
B+
Retailer 2
-
$2,369 SGD
View
B+
Retailer 3
-
$2,717 SGD
View
B+
Retailer 4
-
$3,008 SGD
View
B
Retailer 5
-
$4,100 SGD
View
Most Expensive
B
NZ Jewellers
4227146a-3a3a-46c1-b34d-3e252ed990b2 · Nov 5
$5,724 SGD
$4,481 USD
View
5 more retailers have this diamond
Prices start from $2,166 SGDSave up to $3,557 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
1.03ct Round
$2,166 SGD