Radiant|Natural|GIA

1.51ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 6545057025

Certificate GIA 6545057025

Diamond specifications and retailer prices

From HK$63,315 HKD
A$12,415 AUD
As of November 2, 2026
Save HK$49,504 HKD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$112,819 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 F 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 6545057025. Listed at 20 retailers as of October 30, 2026, with prices from HK$63,315 to HK$112,819, a HK$49,504 spread on the same certified stone. NZ Jewellers lists it at HK$112,819. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.53°
Pavilion angle29.05°
OriginNatural
Grading LabGIA
CertificateGIA 6545057025
Dimensions5.53 × 8.15 × 3.60 mm
L/W Ratio1.47
Top View
5.53 mm8.15 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545057025
Side View
Table 66.0%Crown 43.53°Girdle: Very ThickPavilion 29.05°Culet: NoneDepth 65.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: HK$112,819 HKD|Low: HK$62,047 HKD|High: HK$116,358 HKD|Avg: HK$79,299 HKD|-3.0%
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
November 3, 2026
Retailer 9HK$63,373 HKD
Retailer 19HK$67,241 HKD
Retailer 5HK$67,688 HKD
Retailer 15HK$67,688 HKD
Retailer 8HK$68,253 HKD
Retailer 6HK$73,330 HKD
Retailer 2HK$73,997 HKD
Retailer 13HK$74,340 HKD
Retailer 18HK$74,459 HKD
Retailer 3HK$75,221 HKD
Retailer 4HK$79,952 HKD
Retailer 17HK$79,952 HKD
Retailer 11HK$80,852 HKD
Retailer 14HK$82,151 HKD
Retailer 16HK$82,619 HKD
Retailer 7HK$84,612 HKD
Retailer 10HK$89,092 HKD
Retailer 12HK$105,714 HKD
NZ JewellersHK$112,819 HKD

42 data points across 19 retailers

20 retailersHK$63,315 HKD to HK$112,819 HKD

B+
Cheapest Retailer
-
HK$63,315 HKD
A$12,415 AUD
B+
Retailer 2
-
HK$63,373 HKD
$8,077 USD
View
B+
Retailer 3
-
HK$67,241 HKD
$8,570 USD
View
B+
Retailer 4
-
HK$67,688 HKD
$8,627 USD
View
B+
Retailer 5
-
HK$67,688 HKD
$8,627 USD
View
Final sale: no returns
B+
Retailer 6
-
HK$68,253 HKD
$8,699 USD
View
B+
Retailer 7
-
HK$73,330 HKD
$9,346 USD
View
B+
Retailer 8
-
HK$73,997 HKD
£7,426 GBP
View
Retailer 9
-
HK$74,340 HKD
A$14,577 AUD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
HK$74,459 HKD
$9,490 USD
View
B+
Retailer 11
-
HK$75,221 HKD
$9,587 USD
View
B
Retailer 12
-
HK$79,952 HKD
$10,190 USD
View
B
Retailer 13
-
HK$79,952 HKD
$10,190 USD
View
B
Retailer 14
-
HK$80,852 HKD
$10,305 USD
View
Retailer 15
-
HK$82,151 HKD
$10,470 USD
View
Price last confirmed 7 days ago
B
Retailer 16
-
HK$82,619 HKD
$10,530 USD
View
B
Retailer 17
-
HK$84,612 HKD
$10,784 USD
View
Retailer 18
-
HK$89,092 HKD
$11,355 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
HK$105,714 HKD
£10,609 GBP
View
Most Expensive
B
NZ Jewellers
1e0b6c26-ff93-4381-948b-98c0c0e75016 · Oct 30
HK$112,819 HKD
$14,379 USD
View
19 more retailers have this diamond
Prices start from HK$63,315 HKDSave up to HK$49,504 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+
1.51ct Radiant
HK$63,315 HKD