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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 $15,010 NZD
As of November 6, 2026
Save $5,717 NZD (28%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $20,727 NZD 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 $15,010 to $20,727, a $5,717 spread on the same certified stone. Jared lists it at $20,727. 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: $20,727 NZD|Low: $15,010 NZD|High: $20,727 NZD|Avg: $18,040 NZD
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$15,010 NZD
Retailer 6$15,189 NZD
Retailer 4$15,782 NZD
Retailer 9$16,239 NZD
Retailer 12$16,410 NZD
Retailer 2$17,637 NZD
Retailer 8$18,973 NZD
Retailer 3$19,672 NZD
Retailer 10$20,059 NZD
Retailer 11$20,059 NZD
Retailer 5$20,435 NZD
Jared$20,727 NZD

21 data points across 12 retailers

13 retailers$15,010 NZD to $20,727 NZD

B+
Cheapest Retailer
-
$15,010 NZD
Retailer 2
-
$15,189 NZD
View
Price last confirmed 17 days ago
B
Retailer 3
-
$15,782 NZD
View
B
Retailer 4
-
$15,986 NZD
View
B
Retailer 5
-
$16,239 NZD
View
B
Retailer 6
-
$16,410 NZD
View
B
Retailer 7
-
$17,637 NZD
View
B
Retailer 8
-
$18,973 NZD
View
B
Retailer 9
-
$19,672 NZD
View
B
Retailer 10
-
$20,059 NZD
View
B
Retailer 11
-
$20,059 NZD
View
B
Retailer 12
-
$20,435 NZD
View
Most Expensive
B
Jared
146253509 · Nov 6
$20,727 NZD
$11,490 USD
View
12 more retailers have this diamond
Prices start from $15,010 NZDSave up to $5,717 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+
1.58ct Radiant
$15,010 NZD