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Radiant|Natural|GIA

1.51ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 7542569108

Certificate GIA 7542569108

Diamond specifications and retailer prices

From $5,197 AUD
As of November 5, 2026
Save $6,159 AUD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $11,356 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant 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 stated by the retailer rather than the lab and certified by GIA 7542569108. Listed at 13 retailers as of November 5, 2026, with prices from $5,197 to $11,356, a $6,159 spread on the same certified stone. NZ Jewellers lists it at $11,356. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle45.72°
OriginNatural
Grading LabGIA
CertificateGIA 7542569108
Dimensions7.61 × 5.82 × 3.96 mm
L/W Ratio1.31
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
7.61 mm5.82 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7542569108
Side View
Table 68.0%Crown 45.72°Girdle: MED-STKPavilionCulet: NoneDepth 68.1%

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 5
Current: $11,356 AUD|Low: $5,625 AUD|High: $11,356 AUD|Avg: $7,359 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 7$5,625 AUD
Retailer 6$5,906 AUD
Retailer 8$5,906 AUD
Retailer 9$5,906 AUD
Retailer 2$6,603 AUD
Retailer 10$6,814 AUD
Retailer 3$6,932 AUD
Retailer 4$7,952 AUD
Retailer 5$10,354 AUD
NZ Jewellers$11,356 AUD

45 data points across 10 retailers

13 retailers$5,197 AUD to $11,356 AUD

A
Cheapest Retailer
-
$5,197 AUD
B+
Retailer 2
-
$5,547 AUD
View
B+
Retailer 3
-
$5,625 AUD
View
Retailer 4
-
$5,906 AUD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$5,906 AUD
View
B+
Retailer 6
-
$5,906 AUD
View
B+
Retailer 7
-
$6,603 AUD
View
B+
Retailer 8
-
$6,635 AUD
View
B+
Retailer 9
-
$6,814 AUD
View
B+
Retailer 10
-
$6,932 AUD
View
B+
Retailer 11
-
$7,952 AUD
View
B
Retailer 12
-
$10,354 AUD
View
Most Expensive
B
NZ Jewellers
83745427-245a-4899-9d78-a2aad90a0f91 · Nov 5
$11,356 AUD
$7,803 USD
View
12 more retailers have this diamond
Prices start from $5,197 AUDSave up to $6,159 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.

A
1.51ct Radiant
$5,197 AUD