Round|Natural|GIA

1.18ct J IF Round Natural Diamond

EX • J/IF • GIA 1558475450

Certificate GIA 1558475450

Diamond specifications and retailer prices

From $6,304 NZD
£2,798 GBP
As of November 1, 2026
Save $5,465 NZD (46%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $12,739 NZD at NZ Jewellers · As of August 29, 2026
View at NZ Jewellers

About this 1.18ct natural round diamond

This 1.18ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 1558475450. Listed at 10 retailers as of November 1, 2026, with a 87% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.18
Carat
J
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558475450
Dimensions6.69 × 6.74 × 4.17 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
6.69 mm6.74 mm1.18 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558475450
Side View
Table 58.0%Crown 36°GirdlePavilion 40.6°CuletDepth 62.1%

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 1
Current: $6,304 NZD|Low: $6,304 NZD|High: $12,256 NZD|Avg: $8,036 NZD|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 1$6,304 NZD
Retailer 4$6,432 NZD
Retailer 3$6,716 NZD
Retailer 5$7,726 NZD
Retailer 6$7,739 NZD
Retailer 2$11,769 NZD

34 data points across 6 retailers

10 retailers$6,304 NZD to $11,769 NZD

A
Cheapest Retailer
-
$6,304 NZD
£2,798 GBP
B+
Retailer 2
-
$6,432 NZD
$3,625 USD
View
B+
Retailer 3
-
$6,716 NZD
$3,785 USD
View
Retailer 4
-
$7,205 NZD
$4,061 USD
View
Price last confirmed 33 days ago
Retailer 5
-
$7,205 NZD
$4,061 USD
View
Price last confirmed 26 days ago
Retailer 6
-
$7,276 NZD
$4,101 USD
View
Price last confirmed 62 days ago
Retailer 7
-
$7,726 NZD
A$6,699 AUD
View
Price last confirmed 29 days ago
B
Retailer 8
-
$11,769 NZD
£5,223 GBP
View
Retailer 9
-
$12,553 NZD
$7,075 USD
View
Price last confirmed 27 days ago
Most Expensive
NZ Jewellers
cedbc125-362d-4eff-a109-4627aff6a6d5 · Aug 29
$12,739 NZD
$7,180 USD
View
Price last confirmed 65 days ago
9 more retailers have this diamond
Prices start from $6,304 NZDSave up to $5,465 NZD

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
1.18ct Round
$6,304 NZD