Round|Natural|GIA

1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2546595232

Certificate GIA 2546595232

Diamond specifications and retailer prices

From $2,969 USD
As of November 6, 2026
Save $4,024 USD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,993 USD 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 $2,969 to $6,993, a $4,024 spread on the same certified stone. NZ Jewellers lists it at $6,993. 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
Color
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: $6,993 USD|Low: $2,944 USD|High: $7,043 USD|Avg: $4,326 USD
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$2,969 USD
Retailer 4$3,227 USD
Retailer 5$3,415 USD
Retailer 12$3,490 USD
Retailer 3$3,636 USD
Retailer 13$3,636 USD
Retailer 14$3,776 USD
Retailer 7$4,016 USD
Retailer 6$4,196 USD
Retailer 9$4,217 USD
Retailer 2$4,370 USD
Retailer 8$4,899 USD
Retailer 10$6,711 USD
NZ Jewellers$6,993 USD

38 data points across 14 retailers

15 retailers$2,969 USD to $6,993 USD

A
Cheapest Retailer
-
$2,969 USD
A
Retailer 2
-
$3,227 USD
View
A
Retailer 3
-
$3,415 USD
View
A
Retailer 4
-
$3,490 USD
View
Retailer 5
-
$3,636 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$3,636 USD
View
B+
Retailer 7
-
$3,776 USD
View
B+
Retailer 8
-
$4,016 USD
View
B+
Retailer 9
-
$4,196 USD
View
B+
Retailer 10
-
$4,217 USD
View
B+
Retailer 11
-
$4,370 USD
View
Retailer 12
-
$4,709 USD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$4,899 USD
View
B
Retailer 14
-
$6,711 USD
View
Most Expensive
B
NZ Jewellers
18b521fa-8fb0-499f-b2fe-e453b0e89815 · Nov 5
$6,993 USD
View
14 more retailers have this diamond
Prices start from $2,969 USDSave up to $4,024 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
1.51ct Round
$2,969 USD