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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

GD • I/SI1 • GIA 2557750890

Certificate GIA 2557750890

Diamond specifications and retailer prices

From HK$20,588 HKD
As of October 31, 2026
Save HK$27,344 HKD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$47,932 HKD at NZ Jewellers · As of October 27, 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 standard cut grade and certified by GIA 2557750890. Listed at 17 retailers as of October 27, 2026, with prices from HK$20,588 to HK$47,932, a HK$27,344 spread on the same certified stone. NZ Jewellers lists it at HK$47,932. 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
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle40°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 2557750890
Dimensions7.00 × 6.92 × 4.67 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.00 mm6.92 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2557750890
Side View
Table 57.0%Crown 40°Girdle: THK-VTKPavilion 40.4°Culet: NoneDepth 67.1%

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: Oct 31
Current: HK$47,932 HKD|Low: HK$20,387 HKD|High: HK$49,352 HKD|Avg: HK$30,211 HKD|-2.9%
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
October 31, 2026
Retailer 10HK$20,588 HKD
Retailer 12HK$21,177 HKD
Retailer 3HK$22,971 HKD
Retailer 11HK$25,343 HKD
Retailer 16HK$25,343 HKD
Retailer 17HK$25,390 HKD
Retailer 5HK$27,508 HKD
Retailer 15HK$27,508 HKD
Retailer 6HK$28,560 HKD
Retailer 4HK$28,568 HKD
Retailer 7HK$29,384 HKD
Retailer 9HK$30,606 HKD
Retailer 8HK$31,125 HKD
Retailer 14HK$31,745 HKD
Retailer 2HK$33,815 HKD
Retailer 13HK$46,255 HKD
NZ JewellersHK$47,932 HKD

37 data points across 17 retailers

17 retailersHK$20,588 HKD to HK$47,932 HKD

A
Cheapest Retailer
-
HK$20,588 HKD
A
Retailer 2
-
HK$21,177 HKD
₹257,058 INR
View
B+
Retailer 3
-
HK$22,971 HKD
A$4,504 AUD
View
B+
Retailer 4
-
HK$25,343 HKD
$3,230 USD
View
B+
Retailer 5
-
HK$25,343 HKD
$3,230 USD
View
B+
Retailer 6
-
HK$25,390 HKD
$3,236 USD
View
Final sale: no returns
B+
Retailer 7
-
HK$26,867 HKD
A$5,268 AUD
View
B+
Retailer 8
-
HK$27,508 HKD
$3,506 USD
View
B+
Retailer 9
-
HK$27,508 HKD
$3,506 USD
View
B+
Retailer 10
-
HK$28,560 HKD
SGD 4,919 SGD
View
B+
Retailer 11
-
HK$28,568 HKD
$3,641 USD
View
B+
Retailer 12
-
HK$29,384 HKD
$3,745 USD
View
Retailer 13
-
HK$30,606 HKD
A$6,001 AUD
View
Price last confirmed 25 days ago
B+
Retailer 14
-
HK$31,745 HKD
$4,046 USD
View
B+
Retailer 15
-
HK$33,815 HKD
ZAR 69,625 ZAR
View
B+
Retailer 16
-
HK$46,255 HKD
£4,642 GBP
View
Most Expensive
B
NZ Jewellers
82aab777-aac8-4ee4-a9b1-3ad464c35c27 · Oct 27
HK$47,932 HKD
$6,109 USD
View
16 more retailers have this diamond
Prices start from HK$20,588 HKDSave up to HK$27,344 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$20,588 HKD