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Round|Natural|GIA

1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2546595232

Certificate GIA 2546595232

Diamond specifications and retailer prices

From $5,282 NZD
As of November 6, 2026
Save $7,158 NZD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,440 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct 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 2546595232. Listed at 15 retailers as of November 5, 2026, with prices from $5,282 to $12,440, a $7,158 spread on the same certified stone. NZ Jewellers lists it at $12,440. 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

1.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2546595232
Dimensions7.25 × 7.30 × 4.57 mm
L/W Ratio1.01
Top View
7.25 mm7.30 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2546595232
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.9%

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: $12,440 NZD|Low: $5,237 NZD|High: $12,529 NZD|Avg: $7,696 NZD
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
November 6, 2026
Retailer 11$5,282 NZD
Retailer 4$5,741 NZD
Retailer 5$6,075 NZD
Retailer 12$6,208 NZD
Retailer 3$6,468 NZD
Retailer 13$6,468 NZD
Retailer 14$6,717 NZD
Retailer 7$7,144 NZD
Retailer 6$7,464 NZD
Retailer 9$7,502 NZD
Retailer 2$7,774 NZD
Retailer 8$8,715 NZD
Retailer 10$11,938 NZD
NZ Jewellers$12,440 NZD

38 data points across 14 retailers

15 retailers$5,282 NZD to $12,440 NZD

A
Cheapest Retailer
-
$5,282 NZD
A
Retailer 2
-
$5,741 NZD
View
A
Retailer 3
-
$6,075 NZD
View
A
Retailer 4
-
$6,208 NZD
View
Retailer 5
-
$6,468 NZD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$6,468 NZD
View
B+
Retailer 7
-
$6,717 NZD
View
B+
Retailer 8
-
$7,144 NZD
View
B+
Retailer 9
-
$7,464 NZD
View
B+
Retailer 10
-
$7,502 NZD
View
B+
Retailer 11
-
$7,774 NZD
View
Retailer 12
-
$8,377 NZD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$8,715 NZD
View
B
Retailer 14
-
$11,938 NZD
View
Most Expensive
B
NZ Jewellers
18b521fa-8fb0-499f-b2fe-e453b0e89815 · Nov 5
$12,440 NZD
$6,993 USD
View
14 more retailers have this diamond
Prices start from $5,282 NZDSave up to $7,158 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
1.51ct Round
$5,282 NZD