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Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 5526668826

Certificate GIA 5526668826

Diamond specifications and retailer prices

From £5,074 GBP
$6,809 USD
As of November 1, 2026
Save £5,764 GBP (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £10,838 GBP at NZ Jewellers · As of October 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 I 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 5526668826. Listed at 20 retailers as of October 30, 2026, with prices from £5,074 to £10,838, a £5,764 spread on the same certified stone. NZ Jewellers lists it at £10,838. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5526668826
Dimensions9.41 × 6.18 × 3.99 mm
L/W Ratio1.52
Top View
9.41 mm6.18 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5526668826
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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: Nov 1
Current: £10,838 GBP|Low: £4,967 GBP|High: £10,838 GBP|Avg: £6,754 GBP
NZ Jewellers
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
Retailer 15
November 2, 2026
Retailer 15£5,074 GBP
Retailer 14£5,414 GBP
Retailer 13£5,419 GBP
Retailer 3£5,514 GBP
Retailer 7£5,871 GBP
Retailer 4£5,961 GBP
Retailer 8£5,989 GBP
Retailer 5£5,997 GBP
Retailer 12£6,136 GBP
Retailer 11£6,550 GBP
Retailer 6£6,774 GBP
Retailer 2£7,080 GBP
Retailer 10£7,961 GBP
Retailer 9£9,031 GBP
NZ Jewellers£10,838 GBP

42 data points across 15 retailers

20 retailers£5,074 GBP to £10,838 GBP

B+
Cheapest Retailer
-
£5,074 GBP
$6,809 USD
B
Retailer 2
-
£5,414 GBP
$7,265 USD
View
B
Retailer 3
-
£5,419 GBP
$7,272 USD
View
B
Retailer 4
-
£5,419 GBP
$7,272 USD
View
Final sale: no returns
B
Retailer 5
-
£5,514 GBP
$7,399 USD
View
B
Retailer 6
-
£5,871 GBP
$7,878 USD
View
B
Retailer 7
-
£5,961 GBP
$7,999 USD
View
B+
Retailer 8
-
£5,989 GBP
View
B
Retailer 9
-
£5,997 GBP
$8,048 USD
View
Retailer 10
-
£6,136 GBP
A$12,668 AUD
View
Price last confirmed 11 days ago
B
Retailer 11
-
£6,461 GBP
$8,670 USD
View
B
Retailer 12
-
£6,461 GBP
$8,670 USD
View
B
Retailer 13
-
£6,501 GBP
$8,724 USD
View
B
Retailer 14
-
£6,550 GBP
$8,790 USD
View
B
Retailer 15
-
£6,677 GBP
$8,960 USD
View
B
Retailer 16
-
£6,774 GBP
$9,090 USD
View
B
Retailer 17
-
£7,080 GBP
€9,048 EUR
View
B
Retailer 18
-
£7,961 GBP
ZAR 172,588 ZAR
View
B
Retailer 19
-
£9,031 GBP
View
Most Expensive
B
NZ Jewellers
46340976-d7d4-470f-9b56-6b02ff4253f8 · Oct 30
£10,838 GBP
$14,544 USD
View
19 more retailers have this diamond
Prices start from £5,074 GBPSave up to £5,764 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
£5,074 GBP