CaratHunter
Plans
Radiant|Natural|GIA

0.51ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 1563729567

Certificate GIA 1563729567

Diamond specifications and retailer prices

From $551 AUD
$386 USD
As of November 2, 2026
Save $2,008 AUD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,558 AUD at NZ Jewellers · As of October 30, 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 H 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 1563729567. Listed at 15 retailers as of October 30, 2026, with prices from $551 to $2,558, a $2,008 spread on the same certified stone. NZ Jewellers lists it at $2,558. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1563729567
Dimensions5.67 × 3.94 × 2.61 mm
L/W Ratio1.44
Girdle conditionPolished
Key to symbols
Twinning Wisp
Top View
5.67 mm3.94 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1563729567
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.3%

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 2
Current: $2,558 AUD|Low: $551 AUD|High: $2,558 AUD|Avg: $1,023 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
November 2, 2026
Retailer 13$551 AUD
Retailer 10$589 AUD
Retailer 6$676 AUD
Retailer 9$783 AUD
Retailer 2$785 AUD
Retailer 14$808 AUD
Retailer 7$859 AUD
Retailer 11$980 AUD
Retailer 4$982 AUD
Retailer 5$1,032 AUD
Retailer 12$1,076 AUD
Retailer 3$1,084 AUD
Retailer 8$1,843 AUD
NZ Jewellers$2,558 AUD

6 data points across 14 retailers

15 retailers$551 AUD to $2,558 AUD

A
Cheapest Retailer
-
$551 AUD
$386 USD
Final sale: no returns
A
Retailer 2
-
$589 AUD
₹39,302 INR
View
A
Retailer 3
-
$676 AUD
HK$3,700 HKD
View
A
Retailer 4
-
$783 AUD
€523 EUR
View
A
Retailer 5
-
$785 AUD
View
A
Retailer 6
-
$800 AUD
$561 USD
View
A
Retailer 7
-
$808 AUD
$566 USD
View
A
Retailer 8
-
$859 AUD
$602 USD
View
A
Retailer 9
-
$980 AUD
£541 GBP
View
B+
Retailer 10
-
$982 AUD
$688 USD
View
B+
Retailer 11
-
$1,032 AUD
$723 USD
View
B+
Retailer 12
-
$1,076 AUD
€718 EUR
View
B+
Retailer 13
-
$1,084 AUD
$760 USD
View
B
Retailer 14
-
$1,843 AUD
£1,017 GBP
View
Most Expensive
B
NZ Jewellers
e782b7bf-767a-44c0-bde0-7d09fbe752b7 · Oct 30
$2,558 AUD
$1,793 USD
View
14 more retailers have this diamond
Prices start from $551 AUDSave up to $2,008 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
$551 AUD