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Round|Natural|HRD

1.55ct I SI2 Round Natural Diamond

EX • I/SI2 • HRD 260000142099

Certificate HRD 260000142099

Diamond specifications and retailer prices

From $4,181 AUD
$2,937 USD
As of October 31, 2026
Save $3,233 AUD (44%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $8,200 AUD at NZ Jewellers · As of September 19, 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 260000142099. Listed at 7 retailers as of October 31, 2026, with a 77% 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

1.55
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.9°
OriginNatural
Grading LabHRD
CertificateHRD 260000142099
Dimensions7.38 × 7.43 × 4.54 mm
L/W Ratio1.01
Girdle conditionMedium
Top View
7.38 mm7.43 mm1.55 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000142099
Side View
Table 59.0%Crown 34.9°GirdlePavilion 40.9°Culet: NoneDepth 61.3%

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: $7,414 AUD|Low: $4,181 AUD|High: $7,955 AUD|Avg: $5,302 AUD|-5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2$4,181 AUD
Retailer 3$4,314 AUD
Retailer 4$4,706 AUD
Retailer 1$7,414 AUD

18 data points across 4 retailers

7 retailers$4,181 AUD to $7,414 AUD

A
Cheapest Retailer
-
$4,181 AUD
$2,937 USD
A
Retailer 2
-
$4,314 AUD
$3,030 USD
View
Retailer 3
-
$4,608 AUD
$3,237 USD
View
Price last confirmed 25 days ago
Retailer 4
-
$4,706 AUD
$3,306 USD
View
Price last confirmed 39 days ago
Retailer 5
-
$4,809 AUD
$3,378 USD
View
Price last confirmed 33 days ago
B+
Retailer 6
-
$7,414 AUD
£4,101 GBP
View
Most Expensive
NZ Jewellers
4bd9673d-67de-410c-aad1-8d729e96cc78 · Sep 19
$8,200 AUD
$5,760 USD
View
Price last confirmed 43 days ago
6 more retailers have this diamond
Prices start from $4,181 AUDSave up to $3,233 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
$4,181 AUD