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1.01ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 623457656

Shape and cutting style on the report: Round brilliant

Certificate IGI 623457656

Diamond specifications and retailer prices

From $1,494 SGD
$1,169 USD
As of October 31, 2026
Save $2,457 SGD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,952 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 623457656. Listed at 15 retailers as of October 30, 2026, with prices from $1,494 to $3,952, a $2,457 spread on the same certified stone. NZ Jewellers lists it at $3,952. 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

1.01
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.4°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 623457656
Dimensions6.40 × 6.36 × 3.93 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.40 mm6.36 mm1.01 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 623457656
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.6%

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: Oct 31
Current: $3,952 SGD|Low: $1,370 SGD|High: $3,952 SGD|Avg: $1,966 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
October 30, 2026
Retailer 13$1,494 SGD
Retailer 11$1,540 SGD
Retailer 8$1,564 SGD
Retailer 3$1,620 SGD
Retailer 5$1,620 SGD
Retailer 14$1,682 SGD
Retailer 15$1,722 SGD
Retailer 12$1,736 SGD
Retailer 6$1,792 SGD
Retailer 4$1,869 SGD
Retailer 10$1,924 SGD
Retailer 7$1,928 SGD
Retailer 2$2,145 SGD
Retailer 9$2,984 SGD
NZ Jewellers$3,952 SGD

43 data points across 15 retailers

15 retailers$1,494 SGD to $3,952 SGD

A
Cheapest Retailer
-
$1,494 SGD
$1,169 USD
Final sale: no returns
Retailer 2
-
$1,540 SGD
$1,205 USD
View
Price last confirmed 10 days ago
A
Retailer 3
-
$1,552 SGD
$1,214 USD
View
A
Retailer 4
-
$1,564 SGD
£963 GBP
View
A
Retailer 5
-
$1,620 SGD
$1,267 USD
View
A
Retailer 6
-
$1,620 SGD
$1,267 USD
View
A
Retailer 7
-
$1,682 SGD
$1,316 USD
View
A
Retailer 8
-
$1,722 SGD
$1,347 USD
View
A
Retailer 9
-
$1,736 SGD
$1,358 USD
View
A
Retailer 10
-
$1,792 SGD
$1,402 USD
View
B+
Retailer 11
-
$1,869 SGD
$1,462 USD
View
B+
Retailer 12
-
$1,924 SGD
£1,185 GBP
View
B+
Retailer 13
-
$2,145 SGD
€1,598 EUR
View
B
Retailer 14
-
$2,984 SGD
£1,838 GBP
View
Most Expensive
B
NZ Jewellers
1f95bea9-c9c5-410d-9912-8116841d46d3 · Oct 30
$3,952 SGD
$3,091 USD
View
14 more retailers have this diamond
Prices start from $1,494 SGDSave up to $2,457 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
1.01ct Round
$1,494 SGD