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Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

VG • K/SI2 • GIA 2557668439

Certificate GIA 2557668439

Diamond specifications and retailer prices

From HK$16,365 HKD
As of November 4, 2026
Save HK$21,245 HKD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$46,349 HKD at NZ Jewellers · As of September 26, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2557668439. Listed at 15 retailers as of November 4, 2026, with a 130% 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
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 2557668439
Dimensions7.08 × 7.16 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.08 mm7.16 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557668439
Side View
Table 58.0%Crown 38°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: HK$25,112 HKD|Low: HK$15,965 HKD|High: HK$39,312 HKD|Avg: HK$22,040 HKD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4HK$16,365 HKD
Retailer 6HK$17,620 HKD
Retailer 9HK$17,722 HKD
Retailer 7HK$17,981 HKD
Retailer 5HK$18,005 HKD
Retailer 8HK$21,111 HKD
Retailer 2HK$22,641 HKD
Retailer 1HK$25,112 HKD
Retailer 3HK$37,610 HKD

43 data points across 9 retailers

15 retailersHK$16,365 HKD to HK$37,610 HKD

A
Cheapest Retailer
-
HK$16,365 HKD
A
Retailer 2
-
HK$17,620 HKD
View
A
Retailer 3
-
HK$17,722 HKD
View
A
Retailer 4
-
HK$17,981 HKD
View
B+
Retailer 5
-
HK$18,005 HKD
View
Final sale: no returns
Retailer 6
-
HK$20,084 HKD
View
Price last confirmed 25 days ago
Retailer 7
-
HK$20,084 HKD
View
Price last confirmed 29 days ago
Retailer 8
-
HK$21,009 HKD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
HK$21,111 HKD
View
A
Retailer 10
-
HK$22,641 HKD
View
Retailer 11
-
HK$23,175 HKD
View
Price last confirmed 28 days ago
B+
Retailer 12
-
HK$25,112 HKD
View
Retailer 13
-
HK$26,627 HKD
View
Price last confirmed 45 days ago
B
Retailer 14
-
HK$37,610 HKD
View
Most Expensive
NZ Jewellers
f89b9305-cc72-4e1f-9aaa-ed09125b63e3 · Sep 26
HK$46,349 HKD
$5,908 USD
View
Price last confirmed 40 days ago
14 more retailers have this diamond
Prices start from HK$16,365 HKDSave up to HK$21,245 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$16,365 HKD