Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

EX • F/SI1 • GIA 6525635517

Certificate GIA 6525635517

Diamond specifications and retailer prices

From €5,854 EUR
HK$51,300 HKD
As of November 1, 2026
Save €5,133 EUR (47%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €13,186 EUR 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 F 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 6525635517. Listed at 19 retailers as of November 1, 2026, with a 88% 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6525635517
Dimensions8.89 × 6.30 × 4.04 mm
L/W Ratio1.41
Top View
8.89 mm6.30 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6525635517
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 64.1%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: €10,988 EUR|Low: €5,854 EUR|High: €11,120 EUR|Avg: €7,934 EUR|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7€5,854 EUR
Retailer 2€6,732 EUR
Retailer 3€6,814 EUR
Retailer 11€7,240 EUR
Retailer 10€7,277 EUR
Retailer 5€7,289 EUR
Retailer 4€7,377 EUR
Retailer 9€7,468 EUR
Retailer 8€8,615 EUR
Retailer 6€9,686 EUR
Retailer 1€10,988 EUR

36 data points across 11 retailers

19 retailers€5,854 EUR to €10,988 EUR

A
Cheapest Retailer
-
€5,854 EUR
HK$51,300 HKD
Retailer 2
-
€6,678 EUR
SGD 10,121 SGD
View
Price last confirmed 21 days ago
B+
Retailer 3
-
€6,732 EUR
$7,551 USD
View
B+
Retailer 4
-
€6,814 EUR
$7,643 USD
View
B+
Retailer 5
-
€7,191 EUR
A$12,408 AUD
View
B+
Retailer 6
-
€7,240 EUR
$8,120 USD
View
B
Retailer 7
-
€7,277 EUR
$8,162 USD
View
Final sale: no returns
Retailer 8
-
€7,278 EUR
$8,163 USD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
€7,289 EUR
£6,437 GBP
View
B+
Retailer 10
-
€7,377 EUR
£6,515 GBP
View
Retailer 11
-
€7,468 EUR
A$12,887 AUD
View
Price last confirmed 11 days ago
Retailer 12
-
€7,884 EUR
$8,843 USD
View
Price last confirmed 25 days ago
B+
Retailer 13
-
€7,896 EUR
$8,856 USD
View
Retailer 14
-
€8,005 EUR
$8,979 USD
View
Price last confirmed 33 days ago
B+
Retailer 15
-
€8,615 EUR
View
Retailer 16
-
€9,097 EUR
$10,203 USD
View
Price last confirmed 24 days ago
B
Retailer 17
-
€9,686 EUR
ZAR 175,505 ZAR
View
B
Retailer 18
-
€10,988 EUR
£9,704 GBP
View
Most Expensive
NZ Jewellers
e9163b27-0ca1-4f3a-9cca-51d1a823de61 · Sep 30
€13,186 EUR
$14,790 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from €5,854 EURSave up to €5,133 EUR

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
€5,854 EUR