Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2558023581

Certificate GIA 2558023581

Diamond specifications and retailer prices

From HK$76,527 HKD
$9,754 USD
As of November 1, 2026
Save HK$40,172 HKD (34%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$121,451 HKD at NZ Jewellers · As of September 25, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558023581. Listed at 20 retailers as of November 1, 2026, with a 52% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2558023581
Dimensions7.25 × 7.29 × 4.56 mm
L/W Ratio1.01
Top View
7.25 mm7.29 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558023581
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.7%

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$93,732 HKD|Low: HK$63,268 HKD|High: HK$116,699 HKD|Avg: HK$81,036 HKD|+4.9%
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
Retailer 18
November 1, 2026
Retailer 8HK$63,268 HKD
Retailer 3HK$67,347 HKD
Retailer 7HK$68,328 HKD
Retailer 10HK$70,674 HKD
Retailer 2HK$71,917 HKD
Retailer 4HK$76,126 HKD
Retailer 16HK$76,527 HKD
Retailer 5HK$79,402 HKD
Retailer 12HK$80,543 HKD
Retailer 9HK$80,575 HKD
Retailer 15HK$81,478 HKD
Retailer 18HK$82,474 HKD
Retailer 14HK$89,347 HKD
Retailer 17HK$91,449 HKD
Retailer 6HK$93,251 HKD
Retailer 1HK$93,732 HKD
Retailer 13HK$109,771 HKD
Retailer 11HK$116,699 HKD

27 data points across 18 retailers

20 retailersHK$76,527 HKD to HK$116,699 HKD

Retailer 1
-
HK$63,268 HKD
Price last confirmed 9 days ago
Retailer 2
-
HK$67,347 HKD
$8,584 USD
View
Price last confirmed 7 days ago
Retailer 3
-
HK$68,328 HKD
$8,709 USD
View
Price last confirmed 10 days ago
Retailer 4
-
HK$70,674 HKD
SGD 12,173 SGD
View
Price last confirmed 21 days ago
Retailer 5
-
HK$71,917 HKD
€8,730 EUR
View
Price last confirmed 8 days ago
Retailer 6
-
HK$76,126 HKD
$9,703 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
HK$76,527 HKD
$9,754 USD
View
Retailer 8
-
HK$79,402 HKD
A$15,570 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
HK$80,543 HKD
£8,083 GBP
View
Retailer 10
-
HK$80,575 HKD
$10,270 USD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
HK$81,478 HKD
$10,385 USD
View
B
Retailer 12
-
HK$82,474 HKD
$10,512 USD
View
Final sale: no returns
B
Retailer 13
-
HK$83,829 HKD
A$16,438 AUD
View
B+
Retailer 14
-
HK$89,347 HKD
$11,388 USD
View
B+
Retailer 15
-
HK$91,449 HKD
$11,656 USD
View
Retailer 16
-
HK$93,251 HKD
$11,886 USD
View
Price last confirmed 9 days ago
B+
Retailer 17
-
HK$93,732 HKD
€11,378 EUR
View
B
Retailer 18
-
HK$109,771 HKD
ZAR 226,030 ZAR
View
B
Retailer 19
-
HK$116,699 HKD
£11,712 GBP
View
Most Expensive
NZ Jewellers
68d0f7cd-47ca-4c37-9c83-917689f9cdbe · Sep 25
HK$121,451 HKD
$15,480 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from HK$76,527 HKDSave up to HK$40,172 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$76,527 HKD