Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

ID • E/SI1 • GIA 6531137674

Certificate GIA 6531137674

Diamond specifications and retailer prices

From HK$64,860 HKD
$8,267 USD
As of October 30, 2026
Save HK$43,479 HKD (40%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$115,465 HKD at NZ Jewellers · As of September 28, 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 6531137674. Listed at 19 retailers as of October 26, 2026, with a 67% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle37.3°
OriginNatural
Grading LabGIA
CertificateGIA 6531137674
Dimensions8.77 × 6.46 × 4.11 mm
L/W Ratio1.36
Top View
8.77 mm6.46 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531137674
Side View
Table 57.0%Crown 38.6°Girdle: STK-THKPavilion 37.3°Culet: NoneDepth 63.6%

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 30
Current: HK$75,756 HKD|Low: HK$61,432 HKD|High: HK$109,505 HKD|Avg: HK$76,895 HKD|+0.1%
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
October 30, 2026
Retailer 10HK$61,432 HKD
Retailer 5HK$63,958 HKD
Retailer 14HK$64,860 HKD
Retailer 13HK$68,768 HKD
Retailer 11HK$69,278 HKD
Retailer 6HK$69,858 HKD
Retailer 12HK$75,052 HKD
Retailer 1HK$75,756 HKD
Retailer 8HK$76,119 HKD
Retailer 2HK$81,360 HKD
Retailer 3HK$81,360 HKD
Retailer 4HK$84,106 HKD
Retailer 9HK$99,978 HKD
Retailer 7HK$108,339 HKD

42 data points across 14 retailers

19 retailersHK$64,860 HKD to HK$108,339 HKD

Retailer 1
-
HK$61,432 HKD
$7,830 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
HK$64,860 HKD
$8,267 USD
View
B+
Retailer 3
-
HK$68,768 HKD
$8,765 USD
View
B+
Retailer 4
-
HK$69,278 HKD
$8,830 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$69,278 HKD
$8,830 USD
View
B+
Retailer 6
-
HK$69,858 HKD
$8,904 USD
View
B+
Retailer 7
-
HK$73,860 HKD
$9,414 USD
View
Retailer 8
-
HK$75,052 HKD
$9,566 USD
View
Price last confirmed 31 days ago
B+
Retailer 9
-
HK$75,052 HKD
$9,566 USD
View
B+
Retailer 10
-
HK$75,756 HKD
£7,603 GBP
View
B+
Retailer 11
-
HK$76,119 HKD
A$14,926 AUD
View
B+
Retailer 12
-
HK$80,632 HKD
$10,277 USD
View
B+
Retailer 13
-
HK$81,360 HKD
$10,370 USD
View
B+
Retailer 14
-
HK$81,360 HKD
$10,370 USD
View
B+
Retailer 15
-
HK$84,106 HKD
$10,720 USD
View
Retailer 16
-
HK$86,601 HKD
$11,038 USD
View
Price last confirmed 31 days ago
Retailer 17
-
HK$99,978 HKD
ZAR 205,864 ZAR
View
Price last confirmed 8 days ago
B
Retailer 18
-
HK$108,339 HKD
£10,873 GBP
View
Most Expensive
NZ Jewellers
00c0aeb9-6e00-439a-b006-4463ad937dc4 · Sep 28
HK$115,465 HKD
$14,717 USD
View
Price last confirmed 32 days ago
18 more retailers have this diamond
Prices start from HK$64,860 HKDSave up to HK$43,479 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$64,860 HKD