CaratHunter
Plans
Round|Natural|GIA

1.01ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1528594271

Certificate GIA 1528594271

Diamond specifications and retailer prices

From $2,337 SGD
As of November 6, 2026
Save $4,103 SGD (64%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $6,440 SGD at NZ Jewellers · As of November 5, 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 1528594271. Listed at 24 retailers as of November 5, 2026, with prices from $2,337 to $6,440, a $4,103 spread on the same certified stone. NZ Jewellers lists it at $6,440. 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 angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1528594271
Dimensions6.43 × 6.47 × 4.00 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.43 mm6.47 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1528594271
Side View
Table 57.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.0%

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: $6,440 SGD|Low: $2,252 SGD|High: $6,440 SGD|Avg: $3,223 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
November 6, 2026
Retailer 3$2,337 SGD
Retailer 11$2,495 SGD
Retailer 7$2,521 SGD
Retailer 6$2,576 SGD
Retailer 14$2,585 SGD
Retailer 15$2,611 SGD
Retailer 5$2,693 SGD
Retailer 10$2,791 SGD
Retailer 16$2,791 SGD
Retailer 17$2,810 SGD
Retailer 21$2,905 SGD
Retailer 27$2,920 SGD
Retailer 18$3,020 SGD
Retailer 19$3,041 SGD
Retailer 9$3,055 SGD
Retailer 2$3,219 SGD
Retailer 4$3,220 SGD
Retailer 8$3,232 SGD
Retailer 24$3,242 SGD
Retailer 13$3,334 SGD
Retailer 12$3,566 SGD
Retailer 22$3,575 SGD
Retailer 23$3,759 SGD
Retailer 26$3,764 SGD
Retailer 20$4,823 SGD
Retailer 25$5,381 SGD
NZ Jewellers$6,440 SGD

8 data points across 27 retailers

24 retailers$2,337 SGD to $6,440 SGD

A
Cheapest Retailer
-
$2,337 SGD
Retailer 2
-
$2,495 SGD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
$2,521 SGD
View
B+
Retailer 4
-
$2,576 SGD
View
Final sale: no returns
B+
Retailer 5
-
$2,585 SGD
View
B+
Retailer 6
-
$2,611 SGD
View
B+
Retailer 7
-
$2,693 SGD
View
Retailer 8
-
$2,791 SGD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$2,791 SGD
View
B+
Retailer 10
-
$2,810 SGD
View
B+
Retailer 11
-
$2,905 SGD
View
B+
Retailer 12
-
$2,920 SGD
View
B
Retailer 13
-
$3,055 SGD
View
B+
Retailer 14
-
$3,219 SGD
View
B+
Retailer 15
-
$3,220 SGD
View
B+
Retailer 16
-
$3,232 SGD
View
B+
Retailer 17
-
$3,242 SGD
View
B
Retailer 18
-
$3,334 SGD
View
B
Retailer 19
-
$3,566 SGD
View
B
Retailer 20
-
$3,575 SGD
View
B
Retailer 21
-
$3,759 SGD
View
B
Retailer 22
-
$3,764 SGD
View
B
Retailer 23
-
$5,381 SGD
View
Most Expensive
B
NZ Jewellers
336cb102-bcce-4bca-b4e7-26d504e3e72e · Nov 5
$6,440 SGD
$5,042 USD
View
23 more retailers have this diamond
Prices start from $2,337 SGDSave up to $4,103 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
$2,337 SGD