Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 1538354461

Certificate GIA 1538354461

Diamond specifications and retailer prices

From HK$42,955 HKD
$5,475 USD
As of November 1, 2026
Save HK$37,146 HKD (46%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$90,932 HKD at NZ Jewellers · As of September 30, 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 I 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 1538354461. Listed at 18 retailers as of November 1, 2026, with a 86% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1538354461
Dimensions9.42 × 6.18 × 3.94 mm
L/W Ratio1.52
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Needle
Top View
9.42 mm6.18 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1538354461
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

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$56,101 HKD|Low: HK$35,823 HKD|High: HK$81,067 HKD|Avg: HK$52,842 HKD|+2.2%
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
Retailer 19
Retailer 20
November 2, 2026
Retailer 19HK$37,887 HKD
Retailer 9HK$42,469 HKD
Retailer 5HK$42,955 HKD
Retailer 16HK$42,988 HKD
Retailer 8HK$43,528 HKD
Retailer 20HK$45,819 HKD
Retailer 4HK$48,532 HKD
Retailer 2HK$49,255 HKD
Retailer 18HK$50,158 HKD
Retailer 7HK$51,234 HKD
Retailer 12HK$52,142 HKD
Retailer 17HK$52,910 HKD
Retailer 10HK$53,822 HKD
Retailer 11HK$53,822 HKD
Retailer 6HK$55,626 HKD
Retailer 13HK$55,635 HKD
Retailer 1HK$56,101 HKD
Retailer 15HK$66,798 HKD
Retailer 3HK$78,816 HKD
Retailer 14HK$80,101 HKD

19 data points across 20 retailers

18 retailersHK$42,955 HKD to HK$80,101 HKD

B+
Cheapest Retailer
-
HK$42,955 HKD
$5,475 USD
B+
Retailer 2
-
HK$42,988 HKD
$5,479 USD
View
B+
Retailer 3
-
HK$43,528 HKD
$5,548 USD
View
B+
Retailer 4
-
HK$45,819 HKD
$5,840 USD
View
B+
Retailer 5
-
HK$48,532 HKD
$6,186 USD
View
Retailer 6
-
HK$49,255 HKD
$6,278 USD
View
Price last confirmed 34 days ago
B+
Retailer 7
-
HK$51,234 HKD
$6,530 USD
View
B+
Retailer 8
-
HK$52,142 HKD
£5,233 GBP
View
Retailer 9
-
HK$52,910 HKD
A$10,375 AUD
View
Price last confirmed 33 days ago
B+
Retailer 10
-
HK$53,822 HKD
$6,860 USD
View
B+
Retailer 11
-
HK$53,822 HKD
$6,860 USD
View
B
Retailer 12
-
HK$55,626 HKD
$7,090 USD
View
B+
Retailer 13
-
HK$56,101 HKD
€6,810 EUR
View
Retailer 14
-
HK$56,834 HKD
$7,244 USD
View
Price last confirmed 34 days ago
B
Retailer 15
-
HK$66,798 HKD
ZAR 137,544 ZAR
View
Retailer 16
-
HK$78,816 HKD
$10,046 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
HK$80,101 HKD
£8,039 GBP
View
Most Expensive
NZ Jewellers
8c5a149f-dfc4-4f0c-9fca-f24f50bf74f7 · Sep 30
HK$90,932 HKD
$11,590 USD
View
Price last confirmed 32 days ago
17 more retailers have this diamond
Prices start from HK$42,955 HKDSave up to HK$37,146 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$42,955 HKD