Round|Natural|GIA

1.54ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2558327820

Certificate GIA 2558327820

Diamond specifications and retailer prices

From $5,727 NZD
As of November 5, 2026
Save $4,205 NZD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,374 NZD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.54ct natural round diamond

This 1.54ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558327820. Listed at 10 retailers as of November 4, 2026, with a 73% 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

1.54
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2558327820
Dimensions7.33 × 7.29 × 4.62 mm
L/W Ratio1.01
Star length50%
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
7.33 mm7.29 mm1.54 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2558327820
Side View
Table 57.0%Crown 36.5°GirdlePavilion 41°Culet: NoneDepth 63.1%

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 5
Current: $7,268 NZD|Low: $5,727 NZD|High: $10,212 NZD|Avg: $7,222 NZD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 5$5,727 NZD
Retailer 3$6,124 NZD
Retailer 2$6,925 NZD
Retailer 1$7,268 NZD
Retailer 4$9,932 NZD

42 data points across 5 retailers

10 retailers$5,727 NZD to $9,932 NZD

A
Cheapest Retailer
-
$5,727 NZD
Retailer 2
-
$5,955 NZD
View
Price last confirmed 30 days ago
Retailer 3
-
$5,955 NZD
View
Price last confirmed 30 days ago
A
Retailer 4
-
$6,124 NZD
View
Retailer 5
-
$6,267 NZD
View
Price last confirmed 39 days ago
Retailer 6
-
$6,871 NZD
View
Price last confirmed 36 days ago
A
Retailer 7
-
$6,925 NZD
View
B+
Retailer 8
-
$7,268 NZD
View
B
Retailer 9
-
$9,932 NZD
View
Most Expensive
NZ Jewellers
3179db4e-05ff-4f38-a2e9-7e98a5c48f4d · Oct 3
$10,374 NZD
$5,751 USD
View
Price last confirmed 35 days ago
9 more retailers have this diamond
Prices start from $5,727 NZDSave up to $4,205 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
1.54ct Round
$5,727 NZD