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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6421142723

Certificate GIA 6421142723

Diamond specifications and retailer prices

From HK$72,535 HKD
As of November 4, 2026
Save HK$64,369 HKD (47%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$136,904 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6421142723. Listed at 18 retailers as of November 4, 2026, with prices from HK$72,535 to HK$136,904, a HK$64,369 spread on the same certified stone. NZ Jewellers lists it at HK$136,904. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421142723
Dimensions7.45 × 7.43 × 4.49 mm
L/W Ratio1.00
Top View
7.45 mm7.43 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421142723
Side View
Table 59.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.4%

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 4
Current: HK$136,904 HKD|Low: HK$68,452 HKD|High: HK$136,904 HKD|Avg: HK$99,652 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7HK$72,535 HKD
Retailer 8HK$82,144 HKD
Retailer 10HK$82,144 HKD
Retailer 2HK$87,262 HKD
Retailer 12HK$88,986 HKD
Retailer 9HK$90,357 HKD
Retailer 5HK$98,430 HKD
Retailer 11HK$102,678 HKD
Retailer 3HK$108,062 HKD
Retailer 4HK$117,099 HKD
Retailer 6HK$127,938 HKD
NZ JewellersHK$136,904 HKD

41 data points across 12 retailers

18 retailersHK$72,535 HKD to HK$136,904 HKD

B+
Cheapest Retailer
-
HK$72,535 HKD
B
Retailer 2
-
HK$74,800 HKD
View
B
Retailer 3
-
HK$76,211 HKD
View
B
Retailer 4
-
HK$78,499 HKD
View
Retailer 5
-
HK$82,144 HKD
View
Price last confirmed 8 days ago
B
Retailer 6
-
HK$82,144 HKD
View
Final sale: no returns
B
Retailer 7
-
HK$87,262 HKD
View
B
Retailer 8
-
HK$88,986 HKD
View
B
Retailer 9
-
HK$90,357 HKD
View
B
Retailer 10
-
HK$94,895 HKD
View
B
Retailer 11
-
HK$96,008 HKD
View
B
Retailer 12
-
HK$96,008 HKD
View
B
Retailer 13
-
HK$98,430 HKD
View
B
Retailer 14
-
HK$99,221 HKD
View
B
Retailer 15
-
HK$102,678 HKD
View
Retailer 16
-
HK$108,062 HKD
View
Price last confirmed 14 days ago
B
Retailer 17
-
HK$127,938 HKD
View
Most Expensive
B
NZ Jewellers
647ee53a-c6df-43c7-89e3-127918a6fd9a · Nov 5
HK$136,904 HKD
$17,468 USD
View
17 more retailers have this diamond
Prices start from HK$72,535 HKDSave up to HK$64,369 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 Round
HK$72,535 HKD