Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 5231752054

Certificate GIA 5231752054

Diamond specifications and retailer prices

From €5,768 EUR
$6,444 USD
As of October 30, 2026
Save €4,408 EUR (43%) vs most expensive(unlock to see where)
32 retailers carry this diamond
Most expensive: €12,212 EUR at NZ Jewellers · As of September 20, 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 5231752054. Listed at 32 retailers as of October 30, 2026, with a 76% 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.73°
Pavilion angle39.55°
OriginNatural
Grading LabGIA
CertificateGIA 5231752054
Dimensions9.19 × 6.42 × 3.90 mm
L/W Ratio1.43
Top View
9.19 mm6.42 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231752054
Side View
Table 61.0%Crown 36.73°Girdle: MED-VTKPavilion 39.55°Culet: NoneDepth 60.7%

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: Oct 30
Current: €10,176 EUR|Low: €5,597 EUR|High: €10,298 EUR|Avg: €7,485 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
Retailer 12
Retailer 13
November 1, 2026
Retailer 3€5,768 EUR
Retailer 2€6,105 EUR
Retailer 11€6,106 EUR
Retailer 4€6,113 EUR
Retailer 5€6,157 EUR
Retailer 6€6,880 EUR
Retailer 7€6,889 EUR
Retailer 13€6,998 EUR
Retailer 10€7,001 EUR
Retailer 9€7,978 EUR
Retailer 8€8,970 EUR
Retailer 12€10,174 EUR
Retailer 1€10,176 EUR

33 data points across 13 retailers

32 retailers€5,768 EUR to €10,176 EUR

B+
Cheapest Retailer
-
€5,768 EUR
$6,444 USD
B+
Retailer 2
-
€5,810 EUR
$6,491 USD
View
B+
Retailer 3
-
€6,105 EUR
$6,821 USD
View
Final sale: no returns
Retailer 4
-
€6,106 EUR
$6,822 USD
View
Price last confirmed 7 days ago
Retailer 5
-
€6,106 EUR
$6,822 USD
View
Price last confirmed 16 days ago
B+
Retailer 6
-
€6,113 EUR
$6,830 USD
View
B+
Retailer 7
-
€6,157 EUR
$6,879 USD
View
B
Retailer 8
-
€6,502 EUR
$7,264 USD
View
Retailer 9
-
€6,615 EUR
$7,390 USD
View
Price last confirmed 24 days ago
Retailer 10
-
€6,615 EUR
$7,390 USD
View
Price last confirmed 10 days ago
Retailer 11
-
€6,615 EUR
$7,390 USD
View
Price last confirmed 41 days ago
Retailer 12
-
€6,717 EUR
$7,504 USD
View
Price last confirmed 32 days ago
B+
Retailer 13
-
€6,880 EUR
£6,052 GBP
View
B+
Retailer 14
-
€6,889 EUR
£6,060 GBP
View
Retailer 15
-
€6,998 EUR
A$12,028 AUD
View
Price last confirmed 10 days ago
B+
Retailer 16
-
€7,001 EUR
$7,822 USD
View
Retailer 17
-
€7,001 EUR
$7,822 USD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
€7,035 EUR
$7,860 USD
View
B+
Retailer 19
-
€7,035 EUR
$7,860 USD
View
B
Retailer 20
-
€7,268 EUR
$8,120 USD
View
B
Retailer 21
-
€7,377 EUR
$8,242 USD
View
Retailer 22
-
€7,632 EUR
$8,527 USD
View
Price last confirmed 23 days ago
Retailer 23
-
€7,632 EUR
$8,527 USD
View
Price last confirmed 41 days ago
Retailer 24
-
€7,632 EUR
$8,527 USD
View
Price last confirmed 11 days ago
B
Retailer 25
-
€7,632 EUR
$8,527 USD
View
B
Retailer 26
-
€7,978 EUR
View
B
Retailer 27
-
€8,970 EUR
ZAR 161,897 ZAR
View
B
Retailer 28
-
€10,174 EUR
£8,950 GBP
View
B
Retailer 29
-
€10,176 EUR
£8,952 GBP
View
Retailer 30
-
€12,212 EUR
$13,643 USD
View
Price last confirmed 33 days ago
Retailer 31
-
€12,212 EUR
$13,643 USD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
25751bd0-8d4c-4480-bbc4-1d9b8623946e · Sep 20
€12,212 EUR
$13,643 USD
View
Price last confirmed 42 days ago
31 more retailers have this diamond
Prices start from €5,768 EURSave up to €4,408 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.

B+
1.51ct Oval
€5,768 EUR