CaratHunter
Plans
Round|Natural|IGI

1.59ct K IF Round Natural Diamond

EX • K/IF • IGI 550259521

Shape and cutting style on the report: Round brilliant

Certificate IGI 550259521

Diamond specifications and retailer prices

From $3,418 USD
As of November 6, 2026
Save $3,019 USD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,707 USD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.59ct natural round diamond

This 1.59ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 550259521. Listed at 15 retailers as of November 2, 2026, with a 88% 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

1.59
Carat
K
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 550259521
Dimensions7.44 × 7.38 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.44 mm7.38 mm1.59 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 550259521
Side View
Table 57.5%Crown 35.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.5%

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 6
Current: $3,924 USD|Low: $3,460 USD|High: $6,515 USD|Avg: $4,392 USD|+0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$3,460 USD
Retailer 8$3,486 USD
Retailer 7$3,850 USD
Retailer 1$3,924 USD
Retailer 4$4,425 USD
Retailer 2$4,471 USD
Retailer 3$4,699 USD
Retailer 5$6,437 USD

42 data points across 8 retailers

15 retailers$3,418 USD to $6,437 USD

A
Cheapest Retailer
-
$3,418 USD
A
Retailer 2
-
$3,420 USD
View
A
Retailer 3
-
$3,460 USD
View
A
Retailer 4
-
$3,486 USD
View
Retailer 5
-
$3,850 USD
View
Price last confirmed 49 days ago
Retailer 6
-
$3,850 USD
View
Price last confirmed 36 days ago
Retailer 7
-
$3,850 USD
View
Price last confirmed 29 days ago
A
Retailer 8
-
$3,924 USD
View
A
Retailer 9
-
$3,996 USD
View
A
Retailer 10
-
$4,425 USD
View
Retailer 11
-
$4,442 USD
View
Price last confirmed 48 days ago
A
Retailer 12
-
$4,471 USD
View
A
Retailer 13
-
$4,699 USD
View
B+
Retailer 14
-
$6,437 USD
View
Most Expensive
NZ Jewellers
15f82228-f07b-46ef-9d85-f97189fdb7e1 · Sep 19
$6,707 USD
View
Price last confirmed 47 days ago
14 more retailers have this diamond
Prices start from $3,418 USDSave up to $3,019 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
1.59ct Round
$3,418 USD