Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

EX • F/SI1 • GIA 3555981329

Certificate GIA 3555981329

Diamond specifications and retailer prices

From £5,349 GBP
$7,178 USD
As of November 2, 2026
Save £1,698 GBP (24%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: £11,863 GBP at NZ Jewellers · As of October 23, 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 3555981329. Listed at 33 retailers as of November 2, 2026, with a 32% 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.82°
Pavilion angle39.37°
OriginNatural
Grading LabGIA
CertificateGIA 3555981329
Dimensions8.93 × 6.41 × 3.98 mm
L/W Ratio1.39
Culet sizeNone
Top View
8.93 mm6.41 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555981329
Side View
Table 59.0%Crown 39.82°Girdle: MED-THKPavilion 39.37°Culet: NoneDepth 62.1%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £11,863 GBP|Low: £5,112 GBP|High: £11,863 GBP|Avg: £6,527 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 17
Retailer 18
Retailer 19
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Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
Retailer 28
Retailer 29
Retailer 30
Retailer 31
Retailer 32
Retailer 33
Retailer 34
Retailer 35
Retailer 36
Retailer 37
October 26, 2026
Retailer 29£5,112 GBP
Retailer 4£5,201 GBP
Retailer 28£5,289 GBP
Retailer 31£5,334 GBP
Retailer 36£5,349 GBP
Retailer 5£5,517 GBP
Retailer 18£5,554 GBP
Retailer 34£5,639 GBP
Retailer 27£5,663 GBP
Retailer 7£5,709 GBP
Retailer 15£5,906 GBP
Retailer 21£5,930 GBP
Retailer 16£5,931 GBP
Retailer 19£5,976 GBP
Retailer 22£6,318 GBP
Retailer 14£6,321 GBP
Retailer 6£6,426 GBP
Retailer 9£6,524 GBP
Retailer 33£6,550 GBP
Retailer 11£6,579 GBP
Retailer 23£6,615 GBP
Retailer 8£6,623 GBP
Retailer 13£6,644 GBP
Retailer 24£6,649 GBP
Retailer 12£7,035 GBP
Retailer 37£7,035 GBP
Retailer 25£7,047 GBP
Retailer 20£7,094 GBP
Retailer 10£7,185 GBP
Retailer 3£7,273 GBP
Retailer 2£7,328 GBP
Retailer 17£7,414 GBP
Retailer 30£8,251 GBP
Retailer 35£8,559 GBP
Retailer 26£8,635 GBP
Retailer 32£9,898 GBP
NZ Jewellers£11,863 GBP

24 data points across 37 retailers

33 retailers£5,349 GBP to £7,047 GBP

Retailer 1
-
£5,201 GBP
$6,980 USD
Price last confirmed 15 days ago
B+
Retailer 2
-
£5,349 GBP
$7,178 USD
View
Retailer 3
-
£5,517 GBP
$7,403 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£5,554 GBP
$7,453 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£5,609 GBP
$7,527 USD
View
Price last confirmed 14 days ago
Retailer 6
-
£5,639 GBP
$7,567 USD
View
Price last confirmed 7 days ago
Retailer 7
-
£5,663 GBP
$7,600 USD
View
Price last confirmed 35 days ago
Retailer 8
-
£5,709 GBP
$7,662 USD
View
Price last confirmed 9 days ago
Retailer 9
-
£5,906 GBP
$7,925 USD
View
Price last confirmed 7 days ago
Retailer 10
-
£5,931 GBP
$7,959 USD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£5,976 GBP
CA$11,138 CAD
View
B+
Retailer 12
-
£6,318 GBP
$8,478 USD
View
Retailer 13
-
£6,321 GBP
$8,482 USD
View
Price last confirmed 8 days ago
Retailer 14
-
£6,426 GBP
$8,623 USD
View
Price last confirmed 7 days ago
Retailer 15
-
£6,524 GBP
$8,755 USD
View
Price last confirmed 8 days ago
Retailer 16
-
£6,550 GBP
A$13,522 AUD
View
Price last confirmed 10 days ago
Retailer 17
-
£6,579 GBP
$8,828 USD
View
Price last confirmed 12 days ago
Retailer 18
-
£6,615 GBP
$8,877 USD
View
Price last confirmed 7 days ago
Retailer 19
-
£6,623 GBP
$8,887 USD
View
Price last confirmed 9 days ago
Retailer 20
-
£6,644 GBP
View
Price last confirmed 7 days ago
Retailer 21
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£6,649 GBP
View
Price last confirmed 8 days ago
Retailer 22
-
£7,035 GBP
$9,440 USD
View
Price last confirmed 7 days ago
Retailer 23
-
£7,035 GBP
$9,440 USD
View
Price last confirmed 7 days ago
B+
Retailer 24
-
£7,047 GBP
$9,456 USD
View
Retailer 25
-
£7,094 GBP
$9,519 USD
View
Price last confirmed 8 days ago
Retailer 26
-
£7,185 GBP
$9,642 USD
View
Price last confirmed 10 days ago
Retailer 27
-
£7,273 GBP
$9,760 USD
View
Price last confirmed 7 days ago
Retailer 28
-
£7,328 GBP
€9,365 EUR
View
Price last confirmed 7 days ago
Retailer 29
-
£7,414 GBP
$9,949 USD
View
Price last confirmed 10 days ago
Retailer 30
-
£8,251 GBP
$11,073 USD
View
Price last confirmed 37 days ago
Retailer 31
-
£8,559 GBP
ZAR 185,562 ZAR
View
Price last confirmed 11 days ago
Retailer 32
-
£9,898 GBP
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
d9a550a5-6482-46e5-9c74-e03bdc0a4d1f · Oct 23
£11,863 GBP
$15,919 USD
View
Price last confirmed 10 days ago
32 more retailers have this diamond
Prices start from £5,349 GBPSave up to £1,698 GBP

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
£5,349 GBP