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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 $945 NZD
As of November 6, 2026
Save $2,271 NZD (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,216 NZD 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 $945 to $3,216, a $2,271 spread on the same certified stone. NZ Jewellers lists it at $3,216. 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: $3,216 NZD|Low: $868 NZD|High: $3,216 NZD|Avg: $1,374 NZD
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$942 NZD
Retailer 4$945 NZD
Retailer 13$1,016 NZD
Retailer 16$1,026 NZD
Retailer 14$1,104 NZD
Retailer 15$1,104 NZD
Retailer 8$1,144 NZD
Retailer 6$1,154 NZD
Retailer 3$1,183 NZD
Retailer 9$1,245 NZD
Retailer 10$1,252 NZD
Retailer 5$1,380 NZD
Retailer 11$1,515 NZD
Retailer 12$1,582 NZD
Retailer 2$2,356 NZD
NZ Jewellers$3,216 NZD

31 data points across 16 retailers

15 retailers$945 NZD to $3,216 NZD

B+
Cheapest Retailer
-
$945 NZD
Final sale: no returns
B+
Retailer 2
-
$1,016 NZD
View
A
Retailer 3
-
$1,026 NZD
View
B+
Retailer 4
-
$1,104 NZD
View
Retailer 5
-
$1,104 NZD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$1,154 NZD
View
B+
Retailer 7
-
$1,183 NZD
View
B+
Retailer 8
-
$1,245 NZD
View
B+
Retailer 9
-
$1,252 NZD
View
B+
Retailer 10
-
$1,263 NZD
View
B+
Retailer 11
-
$1,380 NZD
View
B
Retailer 12
-
$1,515 NZD
View
B
Retailer 13
-
$1,582 NZD
View
B
Retailer 14
-
$2,356 NZD
View
Most Expensive
C
NZ Jewellers
59126b56-8549-405a-82f9-ea03ad1831b6 · Nov 5
$3,216 NZD
$1,783 USD
View
14 more retailers have this diamond
Prices start from $945 NZDSave up to $2,271 NZD

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
$945 NZD