CaratHunter
Plans
Round|Natural|IGI

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 826683678

Shape and cutting style on the report: Round brilliant

Certificate IGI 826683678

Diamond specifications and retailer prices

From $2,507 AUD
As of November 6, 2026
Save $3,047 AUD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,647 AUD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

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 IGI 826683678. Listed at 14 retailers as of November 4, 2026, with a 122% 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
FluorescenceNone
Crown angle36.1°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 826683678
Dimensions7.28 × 7.30 × 4.59 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.28 mm7.30 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 826683678
Side View
Table 57.0%Crown 36.1°Girdle: MED-STKPavilion 40.8°CuletDepth 62.9%

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 6
Current: $2,507 AUD|Low: $2,507 AUD|High: $5,628 AUD|Avg: $3,630 AUD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$2,507 AUD
Retailer 7$2,871 AUD
Retailer 2$3,461 AUD
Retailer 3$3,494 AUD
Retailer 4$3,880 AUD
Retailer 5$3,944 AUD
Retailer 6$5,554 AUD

28 data points across 7 retailers

14 retailers$2,507 AUD to $5,554 AUD

A
Cheapest Retailer
-
$2,507 AUD
A
Retailer 2
-
$2,871 AUD
View
Retailer 3
-
$3,180 AUD
View
Price last confirmed 44 days ago
Retailer 4
-
$3,180 AUD
View
Price last confirmed 29 days ago
B+
Retailer 5
-
$3,193 AUD
View
Retailer 6
-
$3,326 AUD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$3,377 AUD
View
A
Retailer 8
-
$3,461 AUD
View
A
Retailer 9
-
$3,494 AUD
View
Retailer 10
-
$3,668 AUD
View
Price last confirmed 45 days ago
A
Retailer 11
-
$3,880 AUD
View
A
Retailer 12
-
$3,944 AUD
View
B+
Retailer 13
-
$5,554 AUD
View
Most Expensive
NZ Jewellers
67bfcd6f-b34b-412d-b10d-40a3ec8d55c0 · Sep 19
$6,647 AUD
$4,653 USD
View
Price last confirmed 47 days ago
13 more retailers have this diamond
Prices start from $2,507 AUDSave up to $3,047 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
$2,507 AUD