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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 $5,955 AUD
As of November 6, 2026
Save $7,192 AUD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,148 AUD 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 $5,955 to $13,148, a $7,192 spread on the same certified stone. NZ Jewellers lists it at $13,148. 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
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $10,377 AUD|Low: $5,955 AUD|High: $12,671 AUD|Avg: $8,953 AUD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5$5,955 AUD
Retailer 2$7,545 AUD
Retailer 3$8,330 AUD
Retailer 1$10,377 AUD
Retailer 4$12,487 AUD

44 data points across 5 retailers

19 retailers$5,955 AUD to $13,148 AUD

B+
Cheapest Retailer
-
$5,955 AUD
B+
Retailer 2
-
$6,038 AUD
View
B+
Retailer 3
-
$6,211 AUD
View
B+
Retailer 4
-
$6,287 AUD
View
B+
Retailer 5
-
$6,628 AUD
View
B+
Retailer 6
-
$7,055 AUD
View
Retailer 7
-
$7,123 AUD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$7,123 AUD
View
B
Retailer 9
-
$7,123 AUD
View
B
Retailer 10
-
$7,244 AUD
View
B
Retailer 11
-
$7,502 AUD
View
B
Retailer 12
-
$7,545 AUD
View
B
Retailer 13
-
$8,218 AUD
View
B
Retailer 14
-
$8,330 AUD
View
Retailer 15
-
$8,674 AUD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$10,377 AUD
View
B
Retailer 17
-
$11,384 AUD
View
B
Retailer 18
-
$12,487 AUD
View
Most Expensive
C
NZ Jewellers
67ce5f8e-58e4-4c56-af8b-5abe8657d6f5 · Nov 5
$13,148 AUD
$9,204 USD
View
18 more retailers have this diamond
Prices start from $5,955 AUDSave up to $7,192 AUD

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
$5,955 AUD