Round|Natural|GIA

1.18ct J IF Round Natural Diamond

EX • J/IF • GIA 1558475450

Certificate GIA 1558475450

Diamond specifications and retailer prices

From $3,564 USD
£2,806 GBP
As of October 30, 2026
Save $3,105 USD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,180 USD 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 October 29, 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
Color
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: Oct 30
Current: $3,564 USD|Low: $3,557 USD|High: $6,908 USD|Avg: $4,534 USD|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 1$3,564 USD
Retailer 4$3,625 USD
Retailer 3$3,785 USD
Retailer 5$4,354 USD
Retailer 6$4,362 USD
Retailer 2$6,669 USD

33 data points across 6 retailers

10 retailers$3,564 USD to $6,669 USD

A
Cheapest Retailer
-
$3,564 USD
£2,806 GBP
B+
Retailer 2
-
$3,625 USD
View
B+
Retailer 3
-
$3,785 USD
View
Retailer 4
-
$4,061 USD
View
Price last confirmed 31 days ago
Retailer 5
-
$4,061 USD
View
Price last confirmed 24 days ago
Retailer 6
-
$4,101 USD
View
Price last confirmed 60 days ago
Retailer 7
-
$4,354 USD
A$6,699 AUD
View
Price last confirmed 27 days ago
B
Retailer 8
-
$6,669 USD
£5,251 GBP
View
Retailer 9
-
$7,075 USD
View
Price last confirmed 25 days ago
Most Expensive
NZ Jewellers
cedbc125-362d-4eff-a109-4627aff6a6d5 · Aug 29
$7,180 USD
View
Price last confirmed 63 days ago
9 more retailers have this diamond
Prices start from $3,564 USDSave up to $3,105 USD

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
$3,564 USD