Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 1528318853

Certificate GIA 1528318853

Diamond specifications and retailer prices

From HK$48,595 HKD
₹589,890 INR
As of October 30, 2026
Save HK$34,166 HKD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$93,458 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1528318853. Listed at 14 retailers as of October 29, 2026, with a 70% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.8°
Pavilion angle34.6°
OriginNatural
Grading LabGIA
CertificateGIA 1528318853
Dimensions8.98 × 6.36 × 3.92 mm
L/W Ratio1.41
Girdle conditionFaceted
Cert comments
Clouds are not shown. Internal graining is not shown.
Key to symbols
Crystal, Feather
Top View
8.98 mm6.36 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1528318853
Side View
Table 60.0%Crown 36.8°Girdle: THK-VTKPavilion 34.6°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: HK$48,595 HKD|Low: HK$48,303 HKD|High: HK$83,319 HKD|Avg: HK$60,991 HKD|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 1HK$48,595 HKD
Retailer 2HK$53,584 HKD
Retailer 6HK$54,235 HKD
Retailer 4HK$60,969 HKD
Retailer 5HK$68,044 HKD
Retailer 3HK$82,761 HKD

36 data points across 6 retailers

14 retailersHK$48,595 HKD to HK$82,761 HKD

Retailer 1
-
HK$48,334 HKD
$6,161 USD
Price last confirmed 58 days ago
A
Retailer 2
-
HK$48,595 HKD
₹589,890 INR
View
A
Retailer 3
-
HK$48,737 HKD
$6,212 USD
View
Retailer 4
-
HK$51,578 HKD
$6,574 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
HK$51,703 HKD
$6,590 USD
View
A
Retailer 6
-
HK$53,584 HKD
£5,378 GBP
View
Retailer 7
-
HK$54,235 HKD
A$10,635 AUD
View
Price last confirmed 8 days ago
Retailer 8
-
HK$55,877 HKD
$7,122 USD
View
Price last confirmed 23 days ago
Retailer 9
-
HK$56,740 HKD
$7,232 USD
View
Price last confirmed 31 days ago
B+
Retailer 10
-
HK$60,969 HKD
€7,401 EUR
View
Retailer 11
-
HK$64,476 HKD
$8,218 USD
View
Price last confirmed 21 days ago
B+
Retailer 12
-
HK$68,044 HKD
ZAR 140,110 ZAR
View
B+
Retailer 13
-
HK$82,761 HKD
£8,306 GBP
View
Most Expensive
NZ Jewellers
9eb5b6d1-a113-46a1-a957-1080dbec719d · Sep 30
HK$93,458 HKD
$11,912 USD
View
Price last confirmed 30 days ago
13 more retailers have this diamond
Prices start from HK$48,595 HKDSave up to HK$34,166 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 Oval
HK$48,595 HKD