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Round|Natural|GIA

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1569725856

Certificate GIA 1569725856

Diamond specifications and retailer prices

From $4,058 AUD
As of November 4, 2026
Save $1,384 AUD (25%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,642 AUD at With Clarity · As of October 29, 2026
View at With Clarity

About this 1.53ct natural round diamond

This 1.53ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1569725856. Listed at 6 retailers as of November 4, 2026, with a 34% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.53
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1569725856
Dimensions7.29 × 7.34 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.29 mm7.34 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1569725856
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NDepth 62.6%

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: $4,200 AUD|Low: $4,023 AUD|High: $7,642 AUD|Avg: $4,982 AUD|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
With Clarity
November 5, 2026
Retailer 2$4,058 AUD
Retailer 1$4,200 AUD
Retailer 3$4,361 AUD
Retailer 5$4,843 AUD
Retailer 4$5,443 AUD
With Clarity$7,642 AUD

7 data points across 6 retailers

6 retailers$4,058 AUD to $5,443 AUD

A
Cheapest Retailer
-
$4,058 AUD
A
Retailer 2
-
$4,200 AUD
View
A
Retailer 3
-
$4,361 AUD
View
A
Retailer 4
-
$4,843 AUD
View
B+
Retailer 5
-
$5,443 AUD
View
Most Expensive
With Clarity
1569725856 · Oct 29
$7,642 AUD
$5,350 USD
View
Price last confirmed 8 days ago
5 more retailers have this diamond
Prices start from $4,058 AUDSave up to $1,384 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
1.53ct Round
$4,058 AUD