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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

ID • E/SI1 • GIA 1559156534

Certificate GIA 1559156534

Diamond specifications and retailer prices

From HK$43,622 HKD
$5,560 USD
As of October 29, 2026
Save HK$34,615 HKD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$78,237 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559156534. Listed at 9 retailers as of October 29, 2026, with prices from HK$43,622 to HK$78,237, a HK$34,615 spread on the same certified stone. NZ Jewellers lists it at HK$78,237. 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

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle54.56°
Pavilion angle35.61°
OriginNatural
Grading LabGIA
CertificateGIA 1559156534
Dimensions7.23 × 5.70 × 4.02 mm
L/W Ratio1.27
Girdle conditionVery Thick
Key to symbols
Crystal, Cloud, Feather, Cavity, Needle, Indented Natural
Top View
7.23 mm5.70 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559156534
Side View
Table 74.0%Crown 54.56°Girdle: MED-VTKPavilion 35.61°Culet: NoneDepth 70.5%

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: Oct 29
Current: HK$78,237 HKD|Low: HK$41,982 HKD|High: HK$79,053 HKD|Avg: HK$51,865 HKD|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 11HK$41,982 HKD
Retailer 8HK$43,622 HKD
Retailer 2HK$43,900 HKD
Retailer 10HK$45,191 HKD
Retailer 5HK$46,776 HKD
Retailer 6HK$46,776 HKD
Retailer 7HK$46,854 HKD
Retailer 9HK$47,600 HKD
Retailer 3HK$49,778 HKD
Retailer 4HK$69,290 HKD
NZ JewellersHK$78,237 HKD

37 data points across 11 retailers

9 retailersHK$43,622 HKD to HK$78,237 HKD

A
Cheapest Retailer
-
HK$43,622 HKD
$5,560 USD
A
Retailer 2
-
HK$43,900 HKD
£4,406 GBP
View
Retailer 3
-
HK$45,191 HKD
$5,760 USD
View
Price last confirmed 30 days ago
A
Retailer 4
-
HK$46,776 HKD
$5,962 USD
View
A
Retailer 5
-
HK$46,776 HKD
$5,962 USD
View
Retailer 6
-
HK$46,854 HKD
A$9,188 AUD
View
Price last confirmed 20 days ago
A
Retailer 7
-
HK$47,600 HKD
$6,067 USD
View
B+
Retailer 8
-
HK$69,290 HKD
£6,954 GBP
View
Most Expensive
B
NZ Jewellers
4ae519c7-44c9-4346-8684-d693f49de9c5 · Oct 30
HK$78,237 HKD
$9,972 USD
View
8 more retailers have this diamond
Prices start from HK$43,622 HKDSave up to HK$34,615 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.

A
1.51ct Radiant
HK$43,622 HKD