Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 2427623450

Certificate GIA 2427623450

Diamond specifications and retailer prices

From HK$54,018 HKD
$6,885 USD
As of October 28, 2026
Save HK$62,985 HKD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$117,003 HKD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2427623450. Listed at 19 retailers as of October 27, 2026, with prices from HK$54,018 to HK$117,003, a HK$62,985 spread on the same certified stone. NZ Jewellers lists it at HK$117,003. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2427623450
Dimensions9.06 × 6.55 × 4.13 mm
L/W Ratio1.38
Top View
9.06 mm6.55 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2427623450
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.0%

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 28
Current: HK$65,222 HKD|Low: HK$54,018 HKD|High: HK$98,674 HKD|Avg: HK$68,081 HKD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 9HK$54,018 HKD
Retailer 2HK$54,779 HKD
Retailer 11HK$58,372 HKD
Retailer 10HK$58,992 HKD
Retailer 3HK$64,350 HKD
Retailer 1HK$65,222 HKD
Retailer 4HK$66,302 HKD
Retailer 7HK$66,333 HKD
Retailer 6HK$72,445 HKD
Retailer 8HK$84,425 HKD
Retailer 5HK$98,016 HKD

35 data points across 11 retailers

19 retailersHK$54,018 HKD to HK$117,003 HKD

B+
Cheapest Retailer
-
HK$54,018 HKD
$6,885 USD
B+
Retailer 2
-
HK$54,779 HKD
$6,982 USD
View
Retailer 3
-
HK$58,372 HKD
$7,440 USD
View
Price last confirmed 5 days ago
Retailer 4
-
HK$58,505 HKD
$7,457 USD
View
Price last confirmed 8 days ago
B
Retailer 5
-
HK$58,992 HKD
$7,519 USD
View
Retailer 6
-
HK$63,378 HKD
$8,078 USD
View
Price last confirmed 7 days ago
Retailer 7
-
HK$64,350 HKD
$8,202 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
HK$65,222 HKD
£6,546 GBP
View
B
Retailer 9
-
HK$65,410 HKD
$8,337 USD
View
B+
Retailer 10
-
HK$66,302 HKD
£6,654 GBP
View
Retailer 11
-
HK$66,333 HKD
A$13,007 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
HK$69,670 HKD
$8,880 USD
View
B
Retailer 13
-
HK$69,670 HKD
$8,880 USD
View
B
Retailer 14
-
HK$71,945 HKD
$9,170 USD
View
B
Retailer 15
-
HK$72,445 HKD
€8,794 EUR
View
B
Retailer 16
-
HK$73,130 HKD
$9,321 USD
View
Retailer 17
-
HK$84,425 HKD
ZAR 173,840 ZAR
View
Price last confirmed 10 days ago
B
Retailer 18
-
HK$98,016 HKD
£9,837 GBP
View
Most Expensive
B
NZ Jewellers
6af18481-3122-4a53-afef-cf2890653e4f · Oct 27
HK$117,003 HKD
$14,913 USD
View
18 more retailers have this diamond
Prices start from HK$54,018 HKDSave up to HK$62,985 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 Oval
HK$54,018 HKD