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Radiant|Natural|GIA

0.51ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 2221035861

Certificate GIA 2221035861

Diamond specifications and retailer prices

From $1,241 AUD
$870 USD
As of November 1, 2026
Save $1,477 AUD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,621 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2221035861. Listed at 22 retailers as of November 2, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2221035861
Dimensions4.93 × 3.96 × 2.96 mm
L/W Ratio1.24
Culet sizeNone
Top View
4.93 mm3.96 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 2221035861
Side View
Table 76.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 74.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,925 AUD|Low: $1,035 AUD|High: $2,753 AUD|Avg: $1,807 AUD|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$1,241 AUD
Retailer 10$1,241 AUD
Retailer 2$1,346 AUD
Retailer 9$1,562 AUD
Retailer 3$1,707 AUD
Retailer 4$1,727 AUD
Retailer 7$1,860 AUD
Retailer 1$1,925 AUD
Retailer 11$1,941 AUD
Retailer 6$2,292 AUD
Retailer 5$2,718 AUD

43 data points across 11 retailers

22 retailers$1,241 AUD to $2,718 AUD

B
Cheapest Retailer
-
$1,241 AUD
$870 USD
B
Retailer 2
-
$1,241 AUD
$870 USD
View
Final sale: no returns
B
Retailer 3
-
$1,328 AUD
$931 USD
View
B
Retailer 4
-
$1,346 AUD
$943 USD
View
B
Retailer 5
-
$1,346 AUD
$943 USD
View
B
Retailer 6
-
$1,358 AUD
$952 USD
View
B
Retailer 7
-
$1,397 AUD
$979 USD
View
B
Retailer 8
-
$1,552 AUD
$1,088 USD
View
B
Retailer 9
-
$1,562 AUD
$1,095 USD
View
B
Retailer 10
-
$1,641 AUD
$1,150 USD
View
B
Retailer 11
-
$1,641 AUD
$1,150 USD
View
B
Retailer 12
-
$1,671 AUD
$1,171 USD
View
B
Retailer 13
-
$1,698 AUD
$1,190 USD
View
B
Retailer 14
-
$1,707 AUD
$1,196 USD
View
B
Retailer 15
-
$1,727 AUD
£953 GBP
View
B
Retailer 16
-
$1,860 AUD
£1,027 GBP
View
B
Retailer 17
-
$1,925 AUD
€1,285 EUR
View
Retailer 18
-
$1,941 AUD
View
Price last confirmed 29 days ago
B
Retailer 19
-
$2,292 AUD
ZAR 25,945 ZAR
View
C
Retailer 20
-
$2,406 AUD
CA$2,342 CAD
View
B
Retailer 21
-
$2,718 AUD
£1,500 GBP
View
Most Expensive
NZ Jewellers
0278a8b5-d79f-4106-b7d1-48121d563f08 · Oct 30
$3,621 AUD
$2,538 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,241 AUDSave up to $1,477 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.

B
0.51ct Radiant
$1,241 AUD