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Round|Natural|GIA

1.01ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6455660314

Certificate GIA 6455660314

Diamond specifications and retailer prices

From $2,768 SGD
As of November 4, 2026
Save $2,747 SGD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,600 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6455660314. Listed at 19 retailers as of November 4, 2026, with a 99% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6455660314
Dimensions6.41 × 6.38 × 4.00 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.41 mm6.38 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6455660314
Side View
Table 56.0%Crown 36.5°Girdle: Sli. ThickPavilion 40.8°Culet: NoneDepth 62.7%

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 4
Current: $3,320 SGD|Low: $2,428 SGD|High: $5,596 SGD|Avg: $3,566 SGD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$2,851 SGD
Retailer 3$2,907 SGD
Retailer 8$2,912 SGD
Retailer 11$2,914 SGD
Retailer 10$3,136 SGD
Retailer 9$3,156 SGD
Retailer 1$3,320 SGD
Retailer 5$3,852 SGD
Retailer 2$3,886 SGD
Retailer 4$3,911 SGD
Retailer 6$5,515 SGD

45 data points across 11 retailers

19 retailers$2,768 SGD to $5,515 SGD

B+
Cheapest Retailer
-
$2,768 SGD
B+
Retailer 2
-
$2,851 SGD
View
B+
Retailer 3
-
$2,907 SGD
View
B+
Retailer 4
-
$2,912 SGD
View
B
Retailer 5
-
$2,914 SGD
View
Final sale: no returns
B
Retailer 6
-
$3,136 SGD
View
Retailer 7
-
$3,156 SGD
View
Price last confirmed 29 days ago
Retailer 8
-
$3,156 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$3,302 SGD
View
Retailer 10
-
$3,302 SGD
View
Price last confirmed 38 days ago
B+
Retailer 11
-
$3,320 SGD
View
B
Retailer 12
-
$3,322 SGD
View
B
Retailer 13
-
$3,335 SGD
View
Retailer 14
-
$3,643 SGD
View
Price last confirmed 28 days ago
B
Retailer 15
-
$3,852 SGD
View
Retailer 16
-
$3,886 SGD
View
Price last confirmed 30 days ago
B
Retailer 17
-
$3,911 SGD
View
B
Retailer 18
-
$5,515 SGD
View
Most Expensive
NZ Jewellers
bed01689-ea58-425b-9007-603aa31b26f7 · Sep 28
$6,600 SGD
$5,167 USD
View
Price last confirmed 39 days ago
18 more retailers have this diamond
Prices start from $2,768 SGDSave up to $2,747 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+
1.01ct Round
$2,768 SGD