CaratHunter
Plans
Round|Natural|GIA

1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2566647312

Certificate GIA 2566647312

Diamond specifications and retailer prices

From $2,396 SGD
As of November 6, 2026
Save $1,947 SGD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,343 SGD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.03ct natural round diamond

This 1.03ct 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 2566647312. Listed at 15 retailers as of November 6, 2026, with prices from $2,396 to $4,343, a $1,947 spread on the same certified stone. Helzberg Diamonds lists it at $4,343. 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

1.03
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2566647312
Dimensions6.46 × 6.49 × 4.01 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.46 mm6.49 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2566647312
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.9%

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: $4,343 SGD|Low: $2,396 SGD|High: $4,647 SGD|Avg: $3,153 SGD|-6.5%
Helzberg Diamonds
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 6$2,396 SGD
Retailer 2$2,404 SGD
Retailer 14$2,464 SGD
Retailer 5$2,492 SGD
Retailer 13$2,525 SGD
Retailer 10$2,618 SGD
Retailer 7$2,631 SGD
Retailer 4$2,639 SGD
Retailer 15$2,889 SGD
Retailer 8$3,066 SGD
Retailer 3$3,101 SGD
Retailer 12$3,479 SGD
Retailer 11$3,694 SGD
Retailer 9$3,948 SGD
Helzberg Diamonds$4,343 SGD

20 data points across 15 retailers

15 retailers$2,396 SGD to $4,343 SGD

A
Cheapest Retailer
-
$2,396 SGD
A
Retailer 2
-
$2,404 SGD
View
B+
Retailer 3
-
$2,464 SGD
View
B+
Retailer 4
-
$2,492 SGD
View
B+
Retailer 5
-
$2,525 SGD
View
B+
Retailer 6
-
$2,618 SGD
View
B+
Retailer 7
-
$2,631 SGD
View
B+
Retailer 8
-
$2,639 SGD
View
B+
Retailer 9
-
$2,889 SGD
View
B+
Retailer 10
-
$3,066 SGD
View
B+
Retailer 11
-
$3,101 SGD
View
B+
Retailer 12
-
$3,479 SGD
View
B
Retailer 13
-
$3,694 SGD
View
B
Retailer 14
-
$3,948 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRILMMMKNJHI · Nov 6
$4,343 SGD
$3,400 USD
View
14 more retailers have this diamond
Prices start from $2,396 SGDSave up to $1,947 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
1.03ct Round
$2,396 SGD