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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 HK$6,826 HKD
$870 USD
As of November 1, 2026
Save HK$8,120 HKD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$19,912 HKD 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 1, 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

How it works →
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: HK$10,586 HKD|Low: HK$5,688 HKD|High: HK$15,135 HKD|Avg: HK$9,935 HKD|+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 8HK$6,826 HKD
Retailer 10HK$6,826 HKD
Retailer 2HK$7,398 HKD
Retailer 9HK$8,591 HKD
Retailer 3HK$9,383 HKD
Retailer 4HK$9,495 HKD
Retailer 7HK$10,228 HKD
Retailer 1HK$10,586 HKD
Retailer 11HK$10,673 HKD
Retailer 6HK$12,600 HKD
Retailer 5HK$14,946 HKD

43 data points across 11 retailers

22 retailersHK$6,826 HKD to HK$14,946 HKD

B
Cheapest Retailer
-
HK$6,826 HKD
$870 USD
B
Retailer 2
-
HK$6,826 HKD
$870 USD
View
Final sale: no returns
B
Retailer 3
-
HK$7,304 HKD
$931 USD
View
B
Retailer 4
-
HK$7,398 HKD
$943 USD
View
B
Retailer 5
-
HK$7,398 HKD
$943 USD
View
B
Retailer 6
-
HK$7,469 HKD
$952 USD
View
B
Retailer 7
-
HK$7,681 HKD
$979 USD
View
B
Retailer 8
-
HK$8,536 HKD
$1,088 USD
View
B
Retailer 9
-
HK$8,591 HKD
$1,095 USD
View
B
Retailer 10
-
HK$9,023 HKD
$1,150 USD
View
B
Retailer 11
-
HK$9,023 HKD
$1,150 USD
View
B
Retailer 12
-
HK$9,187 HKD
$1,171 USD
View
B
Retailer 13
-
HK$9,336 HKD
$1,190 USD
View
B
Retailer 14
-
HK$9,383 HKD
$1,196 USD
View
B
Retailer 15
-
HK$9,495 HKD
£953 GBP
View
B
Retailer 16
-
HK$10,228 HKD
£1,027 GBP
View
B
Retailer 17
-
HK$10,586 HKD
€1,285 EUR
View
Retailer 18
-
HK$10,673 HKD
A$2,093 AUD
View
Price last confirmed 29 days ago
B
Retailer 19
-
HK$12,600 HKD
ZAR 25,945 ZAR
View
C
Retailer 20
-
HK$13,231 HKD
CA$2,342 CAD
View
B
Retailer 21
-
HK$14,946 HKD
£1,500 GBP
View
Most Expensive
NZ Jewellers
0278a8b5-d79f-4106-b7d1-48121d563f08 · Oct 30
HK$19,912 HKD
$2,538 USD
View
Price under review
21 more retailers have this diamond
Prices start from HK$6,826 HKDSave up to HK$8,120 HKD

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
HK$6,826 HKD