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3.50ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1555165785

Certificate GIA 1555165785

Diamond specifications and retailer prices

From $50,972 NZD
SGD 38,756 SGD
As of November 3, 2026
Save $31,180 NZD (38%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $82,152 NZD 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 $50,972 to $82,152, a $31,180 spread on the same certified stone. Helzberg Diamonds lists it at $82,152. 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: $82,152 NZD|Low: $50,972 NZD|High: $83,830 NZD|Avg: $63,450 NZD|-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$50,972 NZD
Retailer 2$53,170 NZD
Retailer 12$54,305 NZD
Retailer 3$55,638 NZD
Retailer 10$57,204 NZD
Retailer 8$57,486 NZD
Retailer 11$61,839 NZD
Retailer 6$65,116 NZD
Retailer 4$65,379 NZD
Retailer 9$67,250 NZD
Retailer 5$78,276 NZD
Helzberg Diamonds$82,152 NZD

35 data points across 12 retailers

13 retailers$50,972 NZD to $82,152 NZD

B+
Cheapest Retailer
-
$50,972 NZD
SGD 38,756 SGD
B+
Retailer 2
-
$53,170 NZD
£23,556 GBP
View
B+
Retailer 3
-
$54,305 NZD
$30,555 USD
View
B+
Retailer 4
-
$55,638 NZD
$31,305 USD
View
B+
Retailer 5
-
$57,204 NZD
$32,186 USD
View
B+
Retailer 6
-
$57,486 NZD
SGD 43,709 SGD
View
B+
Retailer 7
-
$61,839 NZD
$34,794 USD
View
B+
Retailer 8
-
$65,116 NZD
€34,893 EUR
View
B+
Retailer 9
-
$65,379 NZD
$36,786 USD
View
Retailer 10
-
$67,250 NZD
$37,838 USD
View
Price last confirmed 7 days ago
B
Retailer 11
-
$70,269 NZD
$39,537 USD
View
B
Retailer 12
-
$78,276 NZD
$44,042 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLHMLNOL · Nov 1
$82,152 NZD
$46,223 USD
View
12 more retailers have this diamond
Prices start from $50,972 NZDSave up to $31,180 NZD

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
$50,972 NZD