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Radiant|Natural|GIA

1.51ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 6555417728

Certificate GIA 6555417728

Diamond specifications and retailer prices

From HK$46,499 HKD
A$9,118 AUD
As of October 31, 2026
10 retailers carry this diamond
Most expensive: HK$79,398 HKD at NZ Jewellers · As of September 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 D 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 6555417728. Listed at 10 retailers as of October 31, 2026. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555417728
Dimensions7.54 × 5.78 × 3.94 mm
L/W Ratio1.30
Girdle conditionPolished
Top View
7.54 mm5.78 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6555417728
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: HK$79,398 HKD|Low: HK$34,948 HKD|High: HK$84,906 HKD|Avg: HK$48,219 HKD|-6.5%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
September 30, 2026
Retailer 3HK$34,948 HKD
Retailer 10HK$36,169 HKD
Retailer 5HK$36,388 HKD
Retailer 15HK$37,848 HKD
Retailer 2HK$39,894 HKD
Retailer 9HK$40,224 HKD
Retailer 4HK$40,288 HKD
Retailer 11HK$41,465 HKD
Retailer 6HK$41,661 HKD
Retailer 7HK$41,812 HKD
Retailer 16HK$44,139 HKD
Retailer 13HK$44,957 HKD
Retailer 20HK$45,521 HKD
Retailer 12HK$46,499 HKD
Retailer 14HK$46,817 HKD
Retailer 18HK$50,812 HKD
Retailer 8HK$57,547 HKD
Retailer 17HK$70,785 HKD
Retailer 19HK$74,418 HKD
NZ JewellersHK$79,398 HKD

14 data points across 20 retailers

10 retailers

Retailer 1
-
HK$34,948 HKD
Price last confirmed 34 days ago
Retailer 2
-
HK$39,894 HKD
€4,843 EUR
View
Price last confirmed 32 days ago
Retailer 3
-
HK$41,661 HKD
$5,310 USD
View
Price last confirmed 33 days ago
Retailer 4
-
HK$44,957 HKD
£4,512 GBP
View
Price last confirmed 32 days ago
Retailer 5
-
HK$45,521 HKD
$5,802 USD
View
Price last confirmed 34 days ago
A
Retailer 6
-
HK$46,499 HKD
A$9,118 AUD
View
Retailer 7
-
HK$46,817 HKD
A$9,180 AUD
View
Price last confirmed 32 days ago
Retailer 8
-
HK$57,547 HKD
ZAR 118,495 ZAR
View
Price last confirmed 37 days ago
Retailer 9
-
HK$74,418 HKD
$9,485 USD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
713935f0-ce7f-4697-ab11-385cbfb65944 · Sep 30
HK$79,398 HKD
$10,120 USD
View
Price last confirmed 32 days ago
9 more retailers have this diamond
Prices start from HK$46,499 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$46,499 HKD