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Round|Natural|IGI

1.55ct H IF Round Natural Diamond

EX • H/IF • IGI 758571978

Shape and cutting style on the report: Round brilliant

Certificate IGI 758571978

Diamond specifications and retailer prices

From $9,430 AUD
$6,624 USD
As of October 30, 2026
Save $8,654 AUD (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,084 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 H colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 758571978. Listed at 14 retailers as of October 30, 2026, with prices from $9,430 to $18,084, a $8,654 spread on the same certified stone. NZ Jewellers lists it at $18,084. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
H
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 758571978
Dimensions7.31 × 7.36 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.31 mm7.36 mm1.55 ctH / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 758571978
Side View
Table 58.0%Crown 36.1°Girdle: THN-STKPavilion 40.7°Culet: NoneDepth 62.3%

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 30
Current: $18,084 AUD|Low: $9,075 AUD|High: $18,084 AUD|Avg: $11,506 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
October 31, 2026
Retailer 3$9,075 AUD
Retailer 4$9,430 AUD
Retailer 6$9,488 AUD
Retailer 8$9,848 AUD
Retailer 5$9,979 AUD
Retailer 10$9,981 AUD
Retailer 7$10,075 AUD
Retailer 14$10,855 AUD
Retailer 11$10,979 AUD
Retailer 9$11,815 AUD
Retailer 2$12,475 AUD
Retailer 12$13,166 AUD
Retailer 13$15,088 AUD
NZ Jewellers$18,084 AUD

16 data points across 14 retailers

14 retailers$9,430 AUD to $18,084 AUD

Retailer 1
-
$9,075 AUD
$6,375 USD
Price last confirmed 11 days ago
A
Retailer 2
-
$9,430 AUD
$6,624 USD
View
A
Retailer 3
-
$9,488 AUD
$6,665 USD
View
A
Retailer 4
-
$9,848 AUD
£5,447 GBP
View
A
Retailer 5
-
$9,979 AUD
$7,010 USD
View
Final sale: no returns
A
Retailer 6
-
$9,981 AUD
$7,011 USD
View
A
Retailer 7
-
$10,075 AUD
£5,572 GBP
View
A
Retailer 8
-
$10,855 AUD
$7,625 USD
View
A
Retailer 9
-
$10,979 AUD
$7,712 USD
View
A
Retailer 10
-
$11,815 AUD
€7,904 EUR
View
B+
Retailer 11
-
$12,475 AUD
$8,763 USD
View
B+
Retailer 12
-
$13,166 AUD
ZAR 149,410 ZAR
View
B+
Retailer 13
-
$15,088 AUD
£8,345 GBP
View
Most Expensive
B
NZ Jewellers
f19fa746-1d69-4ce7-b7c4-89365ee7ff55 · Oct 30
$18,084 AUD
$12,703 USD
View
13 more retailers have this diamond
Prices start from $9,430 AUDSave up to $8,654 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
$9,430 AUD