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Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 1519562206

Certificate GIA 1519562206

Diamond specifications and retailer prices

From $4,169 USD
As of November 6, 2026
Save $5,035 USD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,204 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1519562206. Listed at 19 retailers as of November 5, 2026, with prices from $4,169 to $9,204, a $5,035 spread on the same certified stone. NZ Jewellers lists it at $9,204. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1519562206
Dimensions7.31 × 7.34 × 4.50 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Top View
7.31 mm7.34 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519562206
Side View
Table 61.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $7,264 USD|Low: $4,169 USD|High: $8,870 USD|Avg: $6,267 USD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5$4,169 USD
Retailer 2$5,282 USD
Retailer 3$5,831 USD
Retailer 1$7,264 USD
Retailer 4$8,741 USD

44 data points across 5 retailers

19 retailers$4,169 USD to $9,204 USD

B+
Cheapest Retailer
-
$4,169 USD
B+
Retailer 2
-
$4,227 USD
View
B+
Retailer 3
-
$4,348 USD
View
B+
Retailer 4
-
$4,401 USD
View
B+
Retailer 5
-
$4,640 USD
View
B+
Retailer 6
-
$4,939 USD
View
Retailer 7
-
$4,986 USD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$4,986 USD
View
B
Retailer 9
-
$4,986 USD
View
B
Retailer 10
-
$5,071 USD
View
B
Retailer 11
-
$5,252 USD
View
B
Retailer 12
-
$5,282 USD
View
B
Retailer 13
-
$5,753 USD
View
B
Retailer 14
-
$5,831 USD
View
Retailer 15
-
$6,072 USD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$7,264 USD
View
B
Retailer 17
-
$7,969 USD
View
B
Retailer 18
-
$8,741 USD
View
Most Expensive
C
NZ Jewellers
67ce5f8e-58e4-4c56-af8b-5abe8657d6f5 · Nov 5
$9,204 USD
View
18 more retailers have this diamond
Prices start from $4,169 USDSave up to $5,035 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.

B+
1.51ct Round
$4,169 USD