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Radiant|Natural|GIA

1.58ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 6442407151

Certificate GIA 6442407151

Diamond specifications and retailer prices

From $12,110 AUD
As of November 6, 2026
Save $4,612 AUD (28%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $16,723 AUD at Jared · As of November 6, 2026
View at Jared

About this 1.58ct natural radiant diamond

This 1.58ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6442407151. Listed at 13 retailers as of November 6, 2026, with prices from $12,110 to $16,723, a $4,612 spread on the same certified stone. Jared lists it at $16,723. 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

1.58
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.74°
Pavilion angle61.44°
OriginNatural
Grading LabGIA
CertificateGIA 6442407151
Dimensions7.62 × 5.95 × 4.11 mm
L/W Ratio1.28
Top View
7.62 mm5.95 mm1.58 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6442407151
Side View
Table 66.0%Crown 45.74°Girdle: STK-THKPavilion 61.44°Culet: NoneDepth 69.0%

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 6
Current: $16,723 AUD|Low: $12,110 AUD|High: $16,723 AUD|Avg: $14,555 AUD
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7$12,110 AUD
Retailer 6$12,254 AUD
Retailer 4$12,733 AUD
Retailer 9$13,102 AUD
Retailer 12$13,240 AUD
Retailer 2$14,229 AUD
Retailer 8$15,308 AUD
Retailer 3$15,871 AUD
Retailer 10$16,184 AUD
Retailer 11$16,184 AUD
Retailer 5$16,487 AUD
Jared$16,723 AUD

21 data points across 12 retailers

13 retailers$12,110 AUD to $16,723 AUD

B+
Cheapest Retailer
-
$12,110 AUD
Retailer 2
-
$12,254 AUD
View
Price last confirmed 17 days ago
B
Retailer 3
-
$12,733 AUD
View
B
Retailer 4
-
$12,898 AUD
View
B
Retailer 5
-
$13,102 AUD
View
B
Retailer 6
-
$13,240 AUD
View
B
Retailer 7
-
$14,229 AUD
View
B
Retailer 8
-
$15,308 AUD
View
B
Retailer 9
-
$15,871 AUD
View
B
Retailer 10
-
$16,184 AUD
View
B
Retailer 11
-
$16,184 AUD
View
B
Retailer 12
-
$16,487 AUD
View
Most Expensive
B
Jared
146253509 · Nov 6
$16,723 AUD
$11,490 USD
View
12 more retailers have this diamond
Prices start from $12,110 AUDSave up to $4,612 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+
1.58ct Radiant
$12,110 AUD