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Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 7428069875

Certificate GIA 7428069875

Diamond specifications and retailer prices

From $2,196 SGD
As of November 6, 2026
Save $3,532 SGD (62%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,727 SGD at NZ Jewellers · As of November 5, 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 top-tier cut grade and certified by GIA 7428069875. Listed at 18 retailers as of November 5, 2026, with prices from $2,196 to $5,727, a $3,532 spread on the same certified stone. NZ Jewellers lists it at $5,727. 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

1.00
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7428069875
Dimensions6.41 × 6.44 × 3.94 mm
L/W Ratio1.00
Top View
6.41 mm6.44 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7428069875
Side View
Table 62.0%Crown 34°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 61.3%

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 6
Current: $3,195 SGD|Low: $1,967 SGD|High: $4,858 SGD|Avg: $2,958 SGD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 8$2,196 SGD
Retailer 9$2,242 SGD
Retailer 6$2,290 SGD
Retailer 7$2,597 SGD
Retailer 4$2,861 SGD
Retailer 3$2,958 SGD
Retailer 1$3,195 SGD
Retailer 2$3,474 SGD
Retailer 5$4,799 SGD

42 data points across 9 retailers

18 retailers$2,196 SGD to $5,727 SGD

A
Cheapest Retailer
-
$2,196 SGD
B+
Retailer 2
-
$2,235 SGD
View
B+
Retailer 3
-
$2,242 SGD
View
B+
Retailer 4
-
$2,290 SGD
View
Final sale: no returns
B+
Retailer 5
-
$2,334 SGD
View
B+
Retailer 6
-
$2,394 SGD
View
B+
Retailer 7
-
$2,482 SGD
View
Retailer 8
-
$2,482 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$2,597 SGD
View
B
Retailer 10
-
$2,861 SGD
View
B
Retailer 11
-
$2,864 SGD
View
B+
Retailer 12
-
$2,958 SGD
View
B
Retailer 13
-
$3,154 SGD
View
B+
Retailer 14
-
$3,195 SGD
View
B
Retailer 15
-
$3,474 SGD
View
B
Retailer 16
-
$3,934 SGD
View
B
Retailer 17
-
$4,799 SGD
View
Most Expensive
B
NZ Jewellers
c5deb422-8764-4927-9c8c-61607f5a480d · Nov 5
$5,727 SGD
$4,484 USD
View
17 more retailers have this diamond
Prices start from $2,196 SGDSave up to $3,532 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
1.00ct Round
$2,196 SGD