Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

GD • J/SI2 • GIA 2546413842

Certificate GIA 2546413842

Diamond specifications and retailer prices

From $1,176 SGD
As of November 6, 2026
Save $1,703 SGD (59%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,791 SGD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 2546413842. Listed at 22 retailers as of November 4, 2026, with a 145% 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

1.00
Carat
J
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
Crown angle40°
Pavilion angle39.2°
OriginNatural
Grading LabGIA
CertificateGIA 2546413842
Dimensions5.99 × 6.10 × 4.02 mm
L/W Ratio1.02
Top View
5.99 mm6.10 mm1.00 ctJ / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 2546413842
Side View
Table 56.0%Crown 40°Girdle: MED-VTKPavilion 39.2°Culet: NoneDepth 66.5%

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: $1,643 SGD|Low: $1,144 SGD|High: $2,891 SGD|Avg: $1,715 SGD|+2.8%
Retailer 1
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
November 6, 2026
Retailer 2$1,176 SGD
Retailer 3$1,193 SGD
Retailer 5$1,455 SGD
Retailer 9$1,461 SGD
Retailer 14$1,524 SGD
Retailer 4$1,576 SGD
Retailer 1$1,643 SGD
Retailer 6$1,696 SGD
Retailer 7$1,768 SGD
Retailer 10$1,788 SGD
Retailer 15$1,807 SGD
Retailer 8$1,889 SGD
Retailer 13$2,056 SGD
Retailer 12$2,262 SGD
Retailer 11$2,879 SGD

34 data points across 15 retailers

22 retailers$1,176 SGD to $2,879 SGD

B+
Cheapest Retailer
-
$1,176 SGD
Retailer 2
-
$1,193 SGD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$1,455 SGD
View
Final sale: no returns
B+
Retailer 4
-
$1,461 SGD
View
B+
Retailer 5
-
$1,524 SGD
View
Retailer 6
-
$1,554 SGD
View
Price last confirmed 60 days ago
Retailer 7
-
$1,554 SGD
View
Price last confirmed 44 days ago
Retailer 8
-
$1,576 SGD
View
Price last confirmed 17 days ago
Retailer 9
-
$1,592 SGD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
$1,643 SGD
View
Retailer 11
-
$1,696 SGD
View
Price last confirmed 18 days ago
Retailer 12
-
$1,768 SGD
View
Price last confirmed 19 days ago
B+
Retailer 13
-
$1,788 SGD
View
Retailer 14
-
$1,793 SGD
View
Price last confirmed 60 days ago
Retailer 15
-
$1,793 SGD
View
Price last confirmed 45 days ago
B+
Retailer 16
-
$1,889 SGD
View
B+
Retailer 17
-
$2,056 SGD
View
B+
Retailer 18
-
$2,262 SGD
View
B
Retailer 19
-
$2,879 SGD
View
Retailer 20
-
$3,737 SGD
View
Price last confirmed 20 days ago
Retailer 21
-
$3,791 SGD
View
Price last confirmed 66 days ago
Most Expensive
NZ Jewellers
119b6a1e-4a2b-46c5-af8e-247e23b87533 · Sep 21
$3,791 SGD
$2,968 USD
View
Price last confirmed 45 days ago
21 more retailers have this diamond
Prices start from $1,176 SGDSave up to $1,703 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
$1,176 SGD