Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 6512402882

Certificate GIA 6512402882

Diamond specifications and retailer prices

From HK$41,372 HKD
$5,273 USD
As of November 1, 2026
Save HK$35,773 HKD (46%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$89,257 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 I 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 6512402882. Listed at 21 retailers as of November 1, 2026, with a 86% 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

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6512402882
Dimensions7.68 × 5.56 × 3.81 mm
L/W Ratio1.38
Top View
7.68 mm5.56 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6512402882
Side View
Table 65.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 68.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$50,226 HKD|Low: HK$37,191 HKD|High: HK$79,577 HKD|Avg: HK$52,200 HKD|-1.8%
Retailer 1
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
November 3, 2026
Retailer 14HK$40,015 HKD
Retailer 3HK$41,372 HKD
Retailer 8HK$42,502 HKD
Retailer 12HK$43,027 HKD
Retailer 15HK$44,213 HKD
Retailer 17HK$44,629 HKD
Retailer 4HK$45,479 HKD
Retailer 1HK$50,226 HKD
Retailer 9HK$52,337 HKD
Retailer 6HK$52,883 HKD
Retailer 16HK$52,883 HKD
Retailer 2HK$53,612 HKD
Retailer 7HK$54,609 HKD
Retailer 10HK$57,207 HKD
Retailer 5HK$57,724 HKD
Retailer 13HK$64,338 HKD
Retailer 11HK$77,146 HKD

44 data points across 17 retailers

21 retailersHK$41,372 HKD to HK$77,146 HKD

Retailer 1
-
HK$40,015 HKD
$5,100 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
HK$41,372 HKD
$5,273 USD
View
B+
Retailer 3
-
HK$42,502 HKD
$5,417 USD
View
B+
Retailer 4
-
HK$43,027 HKD
A$8,437 AUD
View
B+
Retailer 5
-
HK$44,213 HKD
$5,635 USD
View
B+
Retailer 6
-
HK$44,629 HKD
$5,688 USD
View
Final sale: no returns
B+
Retailer 7
-
HK$45,479 HKD
$5,796 USD
View
Retailer 8
-
HK$48,348 HKD
$6,162 USD
View
Price last confirmed 33 days ago
Retailer 9
-
HK$48,348 HKD
$6,162 USD
View
Price last confirmed 32 days ago
B+
Retailer 10
-
HK$50,226 HKD
£5,040 GBP
View
Retailer 11
-
HK$52,337 HKD
A$10,262 AUD
View
Price last confirmed 29 days ago
B
Retailer 12
-
HK$52,883 HKD
$6,740 USD
View
B
Retailer 13
-
HK$52,883 HKD
$6,740 USD
View
B
Retailer 14
-
HK$53,612 HKD
$6,833 USD
View
B
Retailer 15
-
HK$54,609 HKD
$6,960 USD
View
Retailer 16
-
HK$55,786 HKD
$7,110 USD
View
Price last confirmed 35 days ago
B
Retailer 17
-
HK$57,207 HKD
€6,944 EUR
View
Retailer 18
-
HK$57,724 HKD
$7,357 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
HK$64,338 HKD
ZAR 132,471 ZAR
View
B
Retailer 20
-
HK$77,146 HKD
£7,742 GBP
View
Most Expensive
NZ Jewellers
71ee1805-946e-4e6d-a010-ab750ae5fce0 · Sep 30
HK$89,257 HKD
$11,376 USD
View
Price last confirmed 33 days ago
20 more retailers have this diamond
Prices start from HK$41,372 HKDSave up to HK$35,773 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$41,372 HKD