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Round|Natural|HRD

1.55ct I SI2 Round Natural Diamond

EX • I/SI2 • HRD 250000247389

Certificate HRD 250000247389

Diamond specifications and retailer prices

From $4,470 AUD
$3,140 USD
As of October 31, 2026
Save $3,968 AUD (47%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,438 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by HRD 250000247389. Listed at 8 retailers as of October 30, 2026, with prices from $4,470 to $8,438, a $3,968 spread on the same certified stone. NZ Jewellers lists it at $8,438. 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

1.55
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.7°
OriginNatural
Grading LabHRD
CertificateHRD 250000247389
Dimensions7.35 × 7.29 × 4.57 mm
L/W Ratio1.01
Star length50%
Culet sizePointed
Top View
7.35 mm7.29 mm1.55 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 250000247389
Side View
Table 58.0%Crown 36.2°GirdlePavilion 40.7°Culet: NoneDepth 62.4%

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: Oct 31
Current: $8,438 AUD|Low: $4,097 AUD|High: $8,438 AUD|Avg: $5,734 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8$4,470 AUD
Retailer 9$4,798 AUD
Retailer 4$4,843 AUD
Retailer 6$4,843 AUD
Retailer 7$5,030 AUD
Retailer 5$5,589 AUD
Retailer 3$5,671 AUD
Retailer 2$8,100 AUD
NZ Jewellers$8,438 AUD

30 data points across 9 retailers

8 retailers$4,470 AUD to $8,438 AUD

A
Cheapest Retailer
-
$4,470 AUD
$3,140 USD
Final sale: no returns
A
Retailer 2
-
$4,843 AUD
$3,402 USD
View
A
Retailer 3
-
$4,843 AUD
$3,402 USD
View
A
Retailer 4
-
$5,030 AUD
$3,533 USD
View
A
Retailer 5
-
$5,589 AUD
$3,926 USD
View
A
Retailer 6
-
$5,671 AUD
€3,794 EUR
View
B+
Retailer 7
-
$8,100 AUD
£4,480 GBP
View
Most Expensive
B+
NZ Jewellers
ef792729-a189-45f5-bde7-0181b8270528 · Oct 30
$8,438 AUD
$5,927 USD
View
7 more retailers have this diamond
Prices start from $4,470 AUDSave up to $3,968 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
1.55ct Round
$4,470 AUD