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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566495423

Certificate GIA 2566495423

Diamond specifications and retailer prices

From HK$36,054 HKD
As of November 1, 2026
Save HK$44,384 HKD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$80,438 HKD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566495423. Listed at 18 retailers as of October 30, 2026, with prices from HK$36,054 to HK$80,438, a HK$44,384 spread on the same certified stone. NZ Jewellers lists it at HK$80,438. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2566495423
Dimensions7.33 × 7.37 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Pinpoint, Indented Natural
Top View
7.33 mm7.37 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566495423
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.8%

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: Nov 1
Current: HK$80,438 HKD|Low: HK$35,753 HKD|High: HK$80,438 HKD|Avg: HK$50,363 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 17HK$36,054 HKD
Retailer 13HK$38,240 HKD
Retailer 9HK$41,131 HKD
Retailer 8HK$42,165 HKD
Retailer 14HK$42,173 HKD
Retailer 11HK$45,831 HKD
Retailer 5HK$48,089 HKD
Retailer 6HK$48,089 HKD
Retailer 10HK$48,089 HKD
Retailer 3HK$48,842 HKD
Retailer 7HK$49,322 HKD
Retailer 2HK$49,461 HKD
Retailer 18HK$50,309 HKD
Retailer 12HK$52,322 HKD
Retailer 4HK$55,488 HKD
Retailer 16HK$59,088 HKD
Retailer 15HK$70,848 HKD
NZ JewellersHK$80,438 HKD

11 data points across 18 retailers

18 retailersHK$36,054 HKD to HK$80,438 HKD

A
Cheapest Retailer
-
HK$36,054 HKD
A
Retailer 2
-
HK$38,240 HKD
₹464,171 INR
View
A
Retailer 3
-
HK$41,131 HKD
SGD 7,084 SGD
View
A
Retailer 4
-
HK$42,165 HKD
$5,374 USD
View
A
Retailer 5
-
HK$42,173 HKD
$5,375 USD
View
B+
Retailer 6
-
HK$45,831 HKD
£4,599 GBP
View
B+
Retailer 7
-
HK$48,089 HKD
$6,129 USD
View
B+
Retailer 8
-
HK$48,089 HKD
$6,129 USD
View
B+
Retailer 9
-
HK$48,089 HKD
$6,129 USD
View
B+
Retailer 10
-
HK$48,842 HKD
$6,225 USD
View
B+
Retailer 11
-
HK$49,322 HKD
$6,286 USD
View
B+
Retailer 12
-
HK$49,461 HKD
£4,964 GBP
View
B+
Retailer 13
-
HK$50,309 HKD
$6,412 USD
View
B+
Retailer 14
-
HK$52,322 HKD
€6,351 EUR
View
B+
Retailer 15
-
HK$55,488 HKD
$7,072 USD
View
B
Retailer 16
-
HK$59,088 HKD
ZAR 121,661 ZAR
View
B
Retailer 17
-
HK$70,848 HKD
£7,110 GBP
View
Most Expensive
B
NZ Jewellers
ff341407-2ec3-4de4-9297-4dde2b7d59ee · Oct 30
HK$80,438 HKD
$10,252 USD
View
17 more retailers have this diamond
Prices start from HK$36,054 HKDSave up to HK$44,384 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 Round
HK$36,054 HKD