Round|Natural|GIA

1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 7561487212

Certificate GIA 7561487212

Diamond specifications and retailer prices

From $3,276 USD
As of November 6, 2026
Save $4,481 USD (58%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,177 USD at NZ Jewellers · As of October 9, 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 7561487212. Listed at 18 retailers as of November 5, 2026, with a 137% 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

1.51
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7561487212
Dimensions7.29 × 7.24 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.29 mm7.24 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7561487212
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

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: $7,757 USD|Low: $3,238 USD|High: $8,177 USD|Avg: $4,891 USD|-5.1%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 18$3,276 USD
Retailer 10$3,530 USD
Retailer 17$3,643 USD
Retailer 19$3,917 USD
Retailer 4$3,940 USD
Retailer 6$4,110 USD
Retailer 14$4,114 USD
Retailer 13$4,122 USD
Retailer 9$4,189 USD
Retailer 5$4,323 USD
Retailer 7$4,570 USD
Retailer 3$4,703 USD
Retailer 12$4,848 USD
Retailer 11$5,035 USD
Retailer 15$5,432 USD
Retailer 8$5,562 USD
Retailer 2$6,879 USD
Retailer 16$7,072 USD
NZ Jewellers$7,757 USD

27 data points across 19 retailers

18 retailers$3,276 USD to $7,757 USD

A
Cheapest Retailer
-
$3,276 USD
Retailer 2
-
$3,530 USD
View
Price last confirmed 23 days ago
A
Retailer 3
-
$3,643 USD
View
A
Retailer 4
-
$3,917 USD
View
A
Retailer 5
-
$3,940 USD
View
B+
Retailer 6
-
$4,110 USD
View
Final sale: no returns
B+
Retailer 7
-
$4,114 USD
View
B+
Retailer 8
-
$4,122 USD
View
B+
Retailer 9
-
$4,189 USD
View
B+
Retailer 10
-
$4,323 USD
View
B+
Retailer 11
-
$4,570 USD
View
B+
Retailer 12
-
$4,703 USD
View
B+
Retailer 13
-
$4,848 USD
View
B
Retailer 14
-
$5,432 USD
View
B
Retailer 15
-
$6,879 USD
View
B
Retailer 16
-
$7,072 USD
View
B
Retailer 17
-
$7,757 USD
View
Most Expensive
NZ Jewellers
576f1a53-d4c8-45e6-8ec8-5f967e3b2114 · Oct 9
$8,177 USD
View
Price last confirmed 28 days ago
17 more retailers have this diamond
Prices start from $3,276 USDSave up to $4,481 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
$3,276 USD