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Round|Natural|GIA

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2225766939

Certificate GIA 2225766939

Diamond specifications and retailer prices

From $6,707 AUD
As of November 4, 2026
Save $5,708 AUD (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $14,134 AUD at NZ Jewellers · As of October 17, 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 GIA 2225766939. Listed at 9 retailers as of November 4, 2026, with a 85% 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
FluorescenceStrong
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2225766939
Dimensions7.37 × 7.32 × 4.57 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Key to symbols
Crystal, Feather
Top View
7.37 mm7.32 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2225766939
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

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 4
Current: $8,108 AUD|Low: $6,671 AUD|High: $12,599 AUD|Avg: $8,711 AUD|+0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3$6,707 AUD
Retailer 5$6,761 AUD
Retailer 6$7,321 AUD
Retailer 1$8,108 AUD
Retailer 7$9,321 AUD
Retailer 4$10,382 AUD
Retailer 2$12,415 AUD

42 data points across 7 retailers

9 retailers$6,707 AUD to $12,415 AUD

B+
Cheapest Retailer
-
$6,707 AUD
B+
Retailer 2
-
$6,761 AUD
View
B+
Retailer 3
-
$7,320 AUD
View
B+
Retailer 4
-
$7,321 AUD
View
B+
Retailer 5
-
$8,108 AUD
View
Retailer 6
-
$9,321 AUD
View
Price last confirmed 14 days ago
B
Retailer 7
-
$10,382 AUD
View
B
Retailer 8
-
$12,415 AUD
View
Most Expensive
NZ Jewellers
44aba9e6-ac1d-4d15-8d51-6716819aa4bb · Oct 17
$14,134 AUD
$9,894 USD
View
Price last confirmed 20 days ago
8 more retailers have this diamond
Prices start from $6,707 AUDSave up to $5,708 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+
1.53ct Round
$6,707 AUD