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Round|Natural|GIA

1.58ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 7503143297

Certificate GIA 7503143297

Diamond specifications and retailer prices

From $4,304 AUD
As of November 4, 2026
Save $1,850 AUD (30%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,154 AUD at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.58ct natural round diamond

This 1.58ct natural round sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7503143297. Listed at 9 retailers as of November 4, 2026, with prices from $4,304 to $6,154, a $1,850 spread on the same certified stone. Cape Diamonds lists it at $6,154. 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
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7503143297
Dimensions7.52 × 7.55 × 4.58 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Culet sizeNone
Cert comments
Additional twinning wisps pinpoints and surface graining are not shown.
Top View
7.52 mm7.55 mm1.58 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7503143297
Side View
Table 57.0%Crown 33.5°GirdlePavilion 41°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,154 AUD|Low: $4,304 AUD|High: $6,527 AUD|Avg: $5,278 AUD|-5.7%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$4,304 AUD
Retailer 6$4,475 AUD
Retailer 5$4,595 AUD
Retailer 8$4,850 AUD
Retailer 3$5,185 AUD
Retailer 9$5,248 AUD
Retailer 2$5,490 AUD
Retailer 4$5,855 AUD
Cape Diamonds$6,154 AUD

31 data points across 9 retailers

9 retailers$4,304 AUD to $6,154 AUD

A
Cheapest Retailer
-
$4,304 AUD
B+
Retailer 2
-
$4,475 AUD
View
B+
Retailer 3
-
$4,595 AUD
View
B+
Retailer 4
-
$4,850 AUD
View
B+
Retailer 5
-
$5,185 AUD
View
B+
Retailer 6
-
$5,248 AUD
View
B
Retailer 7
-
$5,490 AUD
View
B
Retailer 8
-
$5,855 AUD
View
Most Expensive
B
Cape Diamonds
cert_7503143297 · Nov 5
$6,154 AUD
ZAR 69,593 ZAR
View
8 more retailers have this diamond
Prices start from $4,304 AUDSave up to $1,850 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.

A
1.58ct Round
$4,304 AUD