Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2427279307

Certificate GIA 2427279307

Diamond specifications and retailer prices

From HK$71,396 HKD
$9,100 USD
As of October 25, 2026
Save HK$77,360 HKD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$148,755 HKD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2427279307. Listed at 19 retailers as of October 25, 2026, with prices from HK$71,396 to HK$148,755, a HK$77,360 spread on the same certified stone. Diamond Quarter lists it at HK$148,755. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2427279307
Dimensions7.41 × 7.37 × 4.53 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.41 mm7.37 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2427279307
Side View
Table 58.0%Crown 32°Girdle: Slightly ThickPavilion 41.4°Culet: NoneDepth 61.2%

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: Oct 25
Current: HK$96,358 HKD|Low: HK$71,396 HKD|High: HK$123,454 HKD|Avg: HK$93,089 HKD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7HK$71,396 HKD
Retailer 9HK$72,471 HKD
Retailer 10HK$77,280 HKD
Retailer 3HK$84,947 HKD
Retailer 2HK$85,918 HKD
Retailer 6HK$85,999 HKD
Retailer 4HK$94,251 HKD
Retailer 1HK$96,358 HKD
Retailer 8HK$113,376 HKD
Retailer 5HK$122,637 HKD

42 data points across 10 retailers

19 retailersHK$71,396 HKD to HK$148,755 HKD

B+
Cheapest Retailer
-
HK$71,396 HKD
$9,100 USD
B+
Retailer 2
-
HK$72,471 HKD
$9,237 USD
View
B+
Retailer 3
-
HK$77,280 HKD
$9,850 USD
View
B+
Retailer 4
-
HK$78,112 HKD
$9,956 USD
View
B+
Retailer 5
-
HK$84,616 HKD
$10,785 USD
View
B+
Retailer 6
-
HK$84,947 HKD
£8,525 GBP
View
B+
Retailer 7
-
HK$85,918 HKD
$10,951 USD
View
Retailer 8
-
HK$85,999 HKD
A$16,864 AUD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
HK$91,559 HKD
$11,670 USD
View
B+
Retailer 10
-
HK$91,559 HKD
$11,670 USD
View
B+
Retailer 11
-
HK$94,251 HKD
€11,441 EUR
View
B+
Retailer 12
-
HK$96,358 HKD
£9,671 GBP
View
B
Retailer 13
-
HK$97,640 HKD
$12,445 USD
View
B
Retailer 14
-
HK$102,229 HKD
$13,030 USD
View
Retailer 15
-
HK$102,771 HKD
$13,099 USD
View
Price last confirmed 7 days ago
Retailer 16
-
HK$113,376 HKD
ZAR 233,452 ZAR
View
Price last confirmed 13 days ago
B
Retailer 17
-
HK$122,637 HKD
£12,308 GBP
View
B
Retailer 18
-
HK$130,184 HKD
$16,593 USD
View
Most Expensive
B
Diamond Quarter
1.51SI1E2407034AN · Oct 29
HK$148,755 HKD
£14,929 GBP
View
18 more retailers have this diamond
Prices start from HK$71,396 HKDSave up to HK$77,360 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$71,396 HKD