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Radiant|Natural|GIA

0.51ct G SI1 Radiant Natural Diamond

ID • G/SI1 • GIA 6561755542

Certificate GIA 6561755542

Diamond specifications and retailer prices

From $803 NZD
As of November 2, 2026
Save $2,439 NZD (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,242 NZD at NZ Jewellers · As of November 3, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561755542. Listed at 17 retailers as of November 2, 2026, with prices from $803 to $3,242, a $2,439 spread on the same certified stone. NZ Jewellers lists it at $3,242. 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

0.51
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.5°
Pavilion angle55.6°
OriginNatural
Grading LabGIA
CertificateGIA 6561755542
Dimensions5.44 × 4.04 × 2.72 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Top View
5.44 mm4.04 mm0.51 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6561755542
Side View
Table 69.0%Crown 43.5°Girdle: MED-STKPavilion 55.6°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,242 NZD|Low: $803 NZD|High: $3,242 NZD|Avg: $1,247 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
Retailer 17
November 3, 2026
Retailer 14$803 NZD
Retailer 7$900 NZD
Retailer 4$920 NZD
Retailer 5$920 NZD
Retailer 17$954 NZD
Retailer 9$1,034 NZD
Retailer 12$1,113 NZD
Retailer 13$1,192 NZD
Retailer 10$1,256 NZD
Retailer 3$1,272 NZD
Retailer 16$1,293 NZD
Retailer 6$1,378 NZD
Retailer 2$1,380 NZD
Retailer 8$1,434 NZD
Retailer 15$1,454 NZD
Retailer 11$2,387 NZD
NZ Jewellers$3,242 NZD

4 data points across 17 retailers

17 retailers$803 NZD to $3,242 NZD

A
Cheapest Retailer
-
$803 NZD
A
Retailer 2
-
$900 NZD
View
A
Retailer 3
-
$920 NZD
View
A
Retailer 4
-
$920 NZD
View
A
Retailer 5
-
$1,034 NZD
View
A
Retailer 6
-
$1,048 NZD
View
A
Retailer 7
-
$1,113 NZD
View
A
Retailer 8
-
$1,192 NZD
View
A
Retailer 9
-
$1,256 NZD
View
B+
Retailer 10
-
$1,272 NZD
View
B+
Retailer 11
-
$1,293 NZD
View
B+
Retailer 12
-
$1,378 NZD
View
B+
Retailer 13
-
$1,380 NZD
View
B+
Retailer 14
-
$1,434 NZD
View
B+
Retailer 15
-
$1,454 NZD
View
B
Retailer 16
-
$2,387 NZD
View
Most Expensive
B
NZ Jewellers
64aecc6f-0a86-4525-a7a4-c4e7ffb59046 · Nov 3
$3,242 NZD
$1,797 USD
View
16 more retailers have this diamond
Prices start from $803 NZDSave up to $2,439 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
$803 NZD