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1.03ct F SI1 Round Natural Diamond

EX • F/SI1 • IGI 801639013

Shape and cutting style on the report: Round brilliant

Certificate IGI 801639013

Diamond specifications and retailer prices

From $2,539 SGD
$1,985 USD
As of November 1, 2026
Save $3,512 SGD (58%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,050 SGD at NZ Jewellers · As of October 30, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 801639013. Listed at 16 retailers as of October 30, 2026, with prices from $2,539 to $6,050, a $3,512 spread on the same certified stone. NZ Jewellers lists it at $6,050. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.1°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 801639013
Dimensions6.40 × 6.43 × 4.04 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.40 mm6.43 mm1.03 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 801639013
Side View
Table 56.0%Crown 35.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.0%

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 1
Current: $6,050 SGD|Low: $2,539 SGD|High: $6,050 SGD|Avg: $3,380 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 2, 2026
Retailer 6$2,539 SGD
Retailer 5$2,614 SGD
Retailer 7$2,670 SGD
Retailer 3$2,738 SGD
Retailer 2$2,784 SGD
Retailer 4$2,894 SGD
Retailer 14$2,894 SGD
Retailer 15$2,903 SGD
Retailer 16$3,027 SGD
Retailer 13$3,072 SGD
Retailer 9$3,213 SGD
Retailer 8$3,339 SGD
Retailer 12$3,557 SGD
Retailer 10$3,599 SGD
Retailer 11$5,071 SGD
NZ Jewellers$6,050 SGD

8 data points across 16 retailers

16 retailers$2,539 SGD to $6,050 SGD

A
Cheapest Retailer
-
$2,539 SGD
$1,985 USD
A
Retailer 2
-
$2,614 SGD
$2,044 USD
View
A
Retailer 3
-
$2,670 SGD
$2,088 USD
View
Final sale: no returns
A
Retailer 4
-
$2,738 SGD
$2,141 USD
View
A
Retailer 5
-
$2,784 SGD
£1,714 GBP
View
A
Retailer 6
-
$2,894 SGD
$2,263 USD
View
A
Retailer 7
-
$2,894 SGD
$2,263 USD
View
A
Retailer 8
-
$2,903 SGD
$2,270 USD
View
A
Retailer 9
-
$3,027 SGD
$2,367 USD
View
A
Retailer 10
-
$3,072 SGD
$2,402 USD
View
A
Retailer 11
-
$3,213 SGD
£1,978 GBP
View
B+
Retailer 12
-
$3,339 SGD
$2,611 USD
View
B+
Retailer 13
-
$3,557 SGD
ZAR 44,933 ZAR
View
B+
Retailer 14
-
$3,599 SGD
€2,680 EUR
View
B+
Retailer 15
-
$5,071 SGD
£3,122 GBP
View
Most Expensive
B
NZ Jewellers
e1337ce9-913f-49c0-85d2-36b6ab1b47f3 · Oct 30
$6,050 SGD
$4,731 USD
View
15 more retailers have this diamond
Prices start from $2,539 SGDSave up to $3,512 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
$2,539 SGD