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Radiant|Natural|GIA

0.51ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 1379698927

Certificate GIA 1379698927

Diamond specifications and retailer prices

From $763 AUD
As of November 6, 2026
Save $1,832 AUD (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,595 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1379698927. Listed at 15 retailers as of November 5, 2026, with prices from $763 to $2,595, a $1,832 spread on the same certified stone. NZ Jewellers lists it at $2,595. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1379698927
Dimensions5.12 × 4.07 × 2.59 mm
L/W Ratio1.26
Key to symbols
Needle, Feather, Crystal
Top View
5.12 mm4.07 mm0.51 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1379698927
Side View
Table 71.0%CrownGirdlePavilionCulet: NoneDepth 63.6%

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: $2,595 AUD|Low: $700 AUD|High: $2,595 AUD|Avg: $1,108 AUD
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
November 7, 2026
Retailer 7$760 AUD
Retailer 4$763 AUD
Retailer 13$819 AUD
Retailer 16$828 AUD
Retailer 14$891 AUD
Retailer 15$891 AUD
Retailer 8$923 AUD
Retailer 6$931 AUD
Retailer 3$955 AUD
Retailer 9$1,004 AUD
Retailer 10$1,010 AUD
Retailer 5$1,113 AUD
Retailer 11$1,223 AUD
Retailer 12$1,276 AUD
Retailer 2$1,901 AUD
NZ Jewellers$2,595 AUD

31 data points across 16 retailers

15 retailers$763 AUD to $2,595 AUD

B+
Cheapest Retailer
-
$763 AUD
Final sale: no returns
B+
Retailer 2
-
$819 AUD
View
A
Retailer 3
-
$828 AUD
View
B+
Retailer 4
-
$891 AUD
View
Retailer 5
-
$891 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$931 AUD
View
B+
Retailer 7
-
$955 AUD
View
B+
Retailer 8
-
$1,004 AUD
View
B+
Retailer 9
-
$1,010 AUD
View
B+
Retailer 10
-
$1,019 AUD
View
B+
Retailer 11
-
$1,113 AUD
View
B
Retailer 12
-
$1,223 AUD
View
B
Retailer 13
-
$1,276 AUD
View
B
Retailer 14
-
$1,901 AUD
View
Most Expensive
C
NZ Jewellers
59126b56-8549-405a-82f9-ea03ad1831b6 · Nov 5
$2,595 AUD
$1,783 USD
View
14 more retailers have this diamond
Prices start from $763 AUDSave up to $1,832 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
0.51ct Radiant
$763 AUD