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Round|Natural|GIA

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6565303701

Certificate GIA 6565303701

Diamond specifications and retailer prices

From $4,700 AUD
As of November 4, 2026
Save $1,127 AUD (19%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,827 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

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 6565303701. Listed at 6 retailers as of November 4, 2026, with prices from $4,700 to $5,827, a $1,127 spread on the same certified stone. Blue Nile lists it at $5,827. 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
FluorescenceMedium
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6565303701
Dimensions7.32 × 7.36 × 4.59 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud, Needle, Indented Natural, Natural
Top View
7.32 mm7.36 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6565303701
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 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: $5,827 AUD|Low: $4,143 AUD|High: $5,827 AUD|Avg: $5,303 AUD|+0.7%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3$4,700 AUD
Retailer 5$4,998 AUD
Retailer 4$5,377 AUD
Retailer 6$5,690 AUD
Retailer 2$5,694 AUD
Blue Nile$5,827 AUD

26 data points across 6 retailers

6 retailers$4,700 AUD to $5,827 AUD

A
Cheapest Retailer
-
$4,700 AUD
A
Retailer 2
-
$4,998 AUD
View
Final sale: no returns
B+
Retailer 3
-
$5,377 AUD
View
B+
Retailer 4
-
$5,690 AUD
View
B+
Retailer 5
-
$5,694 AUD
View
Most Expensive
B+
Blue Nile
30420837 · Nov 5
$5,827 AUD
$4,079 USD
View
5 more retailers have this diamond
Prices start from $4,700 AUDSave up to $1,127 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
$4,700 AUD