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Round|Natural|GIA

3.50ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6421070314

Certificate GIA 6421070314

Diamond specifications and retailer prices

From $51,107 AUD
$35,900 USD
As of November 1, 2026
Save $37,882 AUD (43%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $88,989 AUD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 3.5ct natural round diamond

This 3.5ct natural round sits in the three to five carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6421070314. Listed at 16 retailers as of October 31, 2026, with prices from $51,107 to $88,989, a $37,882 spread on the same certified stone. Diamond Quarter lists it at $88,989. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6421070314
Dimensions9.74 × 9.71 × 6.11 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
9.74 mm9.71 mm3.50 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421070314
Side View
Table 56.0%Crown 35°Girdle: MED-MEDPavilion 41.6°Culet: NoneDepth 62.8%

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 1
Current: $53,341 AUD|Low: $51,107 AUD|High: $84,324 AUD|Avg: $61,907 AUD|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5$51,107 AUD
Retailer 1$53,341 AUD
Retailer 3$53,614 AUD
Retailer 9$55,573 AUD
Retailer 10$58,889 AUD
Retailer 11$61,342 AUD
Retailer 2$63,796 AUD
Retailer 4$64,446 AUD
Retailer 8$66,249 AUD
Retailer 7$67,734 AUD
Retailer 6$83,320 AUD

32 data points across 11 retailers

16 retailers$51,107 AUD to $88,989 AUD

B+
Cheapest Retailer
-
$51,107 AUD
$35,900 USD
B+
Retailer 2
-
$52,690 AUD
$37,012 USD
View
B+
Retailer 3
-
$53,341 AUD
£29,503 GBP
View
B+
Retailer 4
-
$53,614 AUD
$37,661 USD
View
B+
Retailer 5
-
$55,573 AUD
$39,037 USD
View
Retailer 6
-
$55,573 AUD
$39,037 USD
View
Price last confirmed 26 days ago
B+
Retailer 7
-
$58,889 AUD
$41,366 USD
View
B
Retailer 8
-
$61,342 AUD
$43,089 USD
View
B+
Retailer 9
-
$63,796 AUD
$44,813 USD
View
B+
Retailer 10
-
$64,446 AUD
€43,114 EUR
View
B
Retailer 11
-
$65,575 AUD
$46,063 USD
View
B
Retailer 12
-
$66,249 AUD
$46,536 USD
View
Retailer 13
-
$66,249 AUD
$46,536 USD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
$67,734 AUD
£37,464 GBP
View
B
Retailer 15
-
$83,320 AUD
£46,085 GBP
View
Most Expensive
B
Diamond Quarter
3.5SI2H6414A650N · Oct 31
$88,989 AUD
£49,221 GBP
View
15 more retailers have this diamond
Prices start from $51,107 AUDSave up to $37,882 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
$51,107 AUD