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Round|Natural|GIA

1.54ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6565753085

Certificate GIA 6565753085

Diamond specifications and retailer prices

From $6,081 AUD
As of November 4, 2026
Save $6,327 AUD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,407 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.54ct natural round diamond

This 1.54ct 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 6565753085. Listed at 15 retailers as of November 4, 2026, with prices from $6,081 to $12,407, a $6,327 spread on the same certified stone. NZ Jewellers lists it at $12,407. 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

1.54
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6565753085
Dimensions7.37 × 7.33 × 4.63 mm
L/W Ratio1.01
Star length50%
Culet sizeNone
Key to symbols
Cloud, Crystal, Needle
Top View
7.37 mm7.33 mm1.54 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565753085
Side View
Table 57.0%Crown 36°GirdlePavilion 41.2°Culet: NDepth 62.9%

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: $12,407 AUD|Low: $6,081 AUD|High: $12,407 AUD|Avg: $7,780 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 7$6,081 AUD
Retailer 5$6,210 AUD
Retailer 3$6,322 AUD
Retailer 15$6,709 AUD
Retailer 11$6,967 AUD
Retailer 4$7,121 AUD
Retailer 13$7,121 AUD
Retailer 14$7,341 AUD
Retailer 2$7,754 AUD
Retailer 10$7,901 AUD
Retailer 8$7,995 AUD
Retailer 6$8,217 AUD
Retailer 9$8,689 AUD
Retailer 12$11,311 AUD
NZ Jewellers$12,407 AUD

8 data points across 15 retailers

15 retailers$6,081 AUD to $12,407 AUD

B+
Cheapest Retailer
-
$6,081 AUD
B+
Retailer 2
-
$6,210 AUD
View
B+
Retailer 3
-
$6,322 AUD
View
B+
Retailer 4
-
$6,709 AUD
View
B+
Retailer 5
-
$6,967 AUD
View
B+
Retailer 6
-
$7,121 AUD
View
B+
Retailer 7
-
$7,121 AUD
View
B
Retailer 8
-
$7,341 AUD
View
B
Retailer 9
-
$7,754 AUD
View
B
Retailer 10
-
$7,901 AUD
View
B
Retailer 11
-
$7,995 AUD
View
B
Retailer 12
-
$8,217 AUD
View
B
Retailer 13
-
$8,689 AUD
View
B
Retailer 14
-
$11,311 AUD
View
Most Expensive
C
NZ Jewellers
c492ab16-dc70-4932-8f29-4413773ac38a · Nov 5
$12,407 AUD
$8,525 USD
View
14 more retailers have this diamond
Prices start from $6,081 AUDSave up to $6,327 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+
1.54ct Round
$6,081 AUD