CaratHunter
Plans
Radiant|Natural|GIA

0.51ct H SI1 Radiant Natural Diamond

GD • H/SI1 • GIA 15

Certificate GIA 15

Diamond specifications and retailer prices

From HK$6,851 HKD
$873 USD
As of October 31, 2026
Save HK$532 HKD (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$7,383 HKD at B2C Jewels · As of November 2, 2026
View at B2C Jewels

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 standard cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of October 31, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 15
Dimensions4.93 × 3.96 × 2.96 mm
L/W Ratio1.24
Top View
4.93 mm3.96 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 15
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: Oct 31
Current: HK$7,383 HKD|Low: HK$6,851 HKD|High: HK$19,913 HKD|Avg: HK$9,864 HKD|+1.4%
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 29, 2026
Retailer 6HK$6,851 HKD
B2C JewelsHK$7,383 HKD
Retailer 4HK$7,399 HKD
Retailer 2HK$7,681 HKD
Retailer 5HK$8,537 HKD
Retailer 3HK$19,913 HKD

3 data points across 6 retailers

2 retailersHK$6,851 HKD to HK$7,383 HKD

B
Cheapest Retailer
-
HK$6,851 HKD
$873 USD
Most Expensive
B
B2C Jewels
25204600 · Nov 2
HK$7,383 HKD
$941 USD
View
1 more retailer has this diamond
Prices start from HK$6,851 HKDSave up to HK$532 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$6,851 HKD