CaratHunter
Plans
Round|Natural|GIA

3.50ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1555165785

Certificate GIA 1555165785

Diamond specifications and retailer prices

From $40,923 AUD
SGD 38,756 SGD
As of November 3, 2026
Save $25,033 AUD (38%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $65,956 AUD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 3.5ct natural round diamond

This 3.5ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555165785. Listed at 13 retailers as of November 1, 2026, with prices from $40,923 to $65,956, a $25,033 spread on the same certified stone. Helzberg Diamonds lists it at $65,956. 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

3.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1555165785
Dimensions9.59 × 9.66 × 6.03 mm
L/W Ratio1.01
Culet sizeNone
Top View
9.59 mm9.66 mm3.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555165785
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 41.2°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 3
Current: $65,956 AUD|Low: $40,923 AUD|High: $67,303 AUD|Avg: $50,940 AUD|-2.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 7$40,923 AUD
Retailer 2$42,688 AUD
Retailer 12$43,599 AUD
Retailer 3$44,668 AUD
Retailer 10$45,926 AUD
Retailer 8$46,153 AUD
Retailer 11$49,648 AUD
Retailer 6$52,278 AUD
Retailer 4$52,490 AUD
Retailer 9$53,992 AUD
Retailer 5$62,844 AUD
Helzberg Diamonds$65,956 AUD

35 data points across 12 retailers

13 retailers$40,923 AUD to $65,956 AUD

B+
Cheapest Retailer
-
$40,923 AUD
SGD 38,756 SGD
B+
Retailer 2
-
$42,688 AUD
£23,556 GBP
View
B+
Retailer 3
-
$43,599 AUD
$30,555 USD
View
B+
Retailer 4
-
$44,668 AUD
$31,305 USD
View
B+
Retailer 5
-
$45,926 AUD
$32,186 USD
View
B+
Retailer 6
-
$46,153 AUD
SGD 43,709 SGD
View
B+
Retailer 7
-
$49,648 AUD
$34,794 USD
View
B+
Retailer 8
-
$52,278 AUD
€34,893 EUR
View
B+
Retailer 9
-
$52,490 AUD
$36,786 USD
View
Retailer 10
-
$53,992 AUD
$37,838 USD
View
Price last confirmed 7 days ago
B
Retailer 11
-
$56,415 AUD
$39,537 USD
View
B
Retailer 12
-
$62,844 AUD
$44,042 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLHMLNOL · Nov 1
$65,956 AUD
$46,223 USD
View
12 more retailers have this diamond
Prices start from $40,923 AUDSave up to $25,033 AUD

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+
3.50ct Round
$40,923 AUD