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Round|Natural|GIA

1.01ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 1423727517

Certificate GIA 1423727517

Diamond specifications and retailer prices

From $1,205 SGD
₹89,758 INR
As of October 31, 2026
Save $2,487 SGD (67%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,018 SGD at NZ Jewellers · As of September 28, 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 very-good cut grade and certified by GIA 1423727517. Listed at 19 retailers as of October 30, 2026, with a 206% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.01
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 1423727517
Dimensions6.40 × 6.37 × 3.98 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.40 mm6.37 mm1.01 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1423727517
Side View
Table 55.0%Crown 37.5°Girdle: ThickPavilion 39.8°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: Oct 31
Current: $3,692 SGD|Low: $1,205 SGD|High: $3,692 SGD|Avg: $1,847 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
October 31, 2026
Retailer 2$1,205 SGD
Retailer 3$1,450 SGD
Retailer 4$1,457 SGD
Retailer 8$1,461 SGD
Retailer 11$1,514 SGD
Retailer 14$1,514 SGD
Retailer 6$1,520 SGD
Retailer 13$1,643 SGD
Retailer 9$1,717 SGD
Retailer 7$1,746 SGD
Retailer 5$1,959 SGD
Retailer 10$2,087 SGD
Retailer 12$2,788 SGD
NZ Jewellers$3,692 SGD

28 data points across 14 retailers

19 retailers$1,205 SGD to $3,692 SGD

A
Cheapest Retailer
-
$1,205 SGD
₹89,758 INR
B+
Retailer 2
-
$1,450 SGD
$1,134 USD
View
A
Retailer 3
-
$1,457 SGD
$1,140 USD
View
A
Retailer 4
-
$1,461 SGD
£900 GBP
View
A
Retailer 5
-
$1,514 SGD
$1,184 USD
View
A
Retailer 6
-
$1,514 SGD
$1,184 USD
View
B+
Retailer 7
-
$1,520 SGD
$1,189 USD
View
Final sale: no returns
B+
Retailer 8
-
$1,643 SGD
$1,285 USD
View
Retailer 9
-
$1,647 SGD
$1,288 USD
View
Price last confirmed 24 days ago
B+
Retailer 10
-
$1,701 SGD
View
Retailer 11
-
$1,710 SGD
$1,338 USD
View
Price last confirmed 32 days ago
A
Retailer 12
-
$1,717 SGD
£1,058 GBP
View
A
Retailer 13
-
$1,746 SGD
$1,366 USD
View
Retailer 14
-
$1,901 SGD
$1,487 USD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$1,959 SGD
$1,532 USD
View
A
Retailer 16
-
$2,087 SGD
€1,555 EUR
View
B+
Retailer 17
-
$2,788 SGD
£1,717 GBP
View
B
Retailer 18
-
$3,692 SGD
$2,888 USD
View
Most Expensive
NZ Jewellers
a99855aa-cdd5-4671-9f23-7c42e2ba2d46 · Sep 28
$4,018 SGD
$3,143 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from $1,205 SGDSave up to $2,487 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
$1,205 SGD