Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 6531369634

Certificate GIA 6531369634

Diamond specifications and retailer prices

From £6,451 GBP
$8,657 USD
As of November 2, 2026
Save £5,199 GBP (45%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £11,650 GBP at NZ Jewellers · As of November 2, 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 6531369634. Listed at 16 retailers as of November 2, 2026, with prices from £6,451 to £11,650, a £5,199 spread on the same certified stone. NZ Jewellers lists it at £11,650. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531369634
Dimensions9.60 × 6.16 × 3.93 mm
L/W Ratio1.56
Top View
9.60 mm6.16 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6531369634
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

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: Nov 2
Current: £11,650 GBP|Low: £6,375 GBP|High: £11,650 GBP|Avg: £8,394 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 3, 2026
Retailer 3£6,451 GBP
Retailer 12£6,927 GBP
Retailer 7£6,991 GBP
Retailer 14£7,049 GBP
Retailer 5£7,573 GBP
Retailer 2£7,576 GBP
Retailer 15£7,608 GBP
Retailer 8£7,690 GBP
Retailer 10£7,821 GBP
Retailer 9£8,015 GBP
Retailer 6£8,738 GBP
Retailer 11£8,806 GBP
Retailer 13£10,270 GBP
Retailer 4£10,918 GBP
NZ Jewellers£11,650 GBP

40 data points across 15 retailers

16 retailers£6,451 GBP to £11,650 GBP

B+
Cheapest Retailer
-
£6,451 GBP
$8,657 USD
B+
Retailer 2
-
£6,545 GBP
$8,783 USD
View
B+
Retailer 3
-
£6,927 GBP
$9,295 USD
View
B+
Retailer 4
-
£7,049 GBP
$9,459 USD
View
B
Retailer 5
-
£7,454 GBP
$10,003 USD
View
B
Retailer 6
-
£7,573 GBP
$10,162 USD
View
B+
Retailer 7
-
£7,576 GBP
View
Retailer 8
-
£7,608 GBP
A$15,707 AUD
View
Our latest check could not confirm this price
B
Retailer 9
-
£7,690 GBP
$10,319 USD
View
B
Retailer 10
-
£7,821 GBP
View
B
Retailer 11
-
£8,015 GBP
$10,756 USD
View
B
Retailer 12
-
£8,738 GBP
$11,726 USD
View
B
Retailer 13
-
£8,806 GBP
€11,254 EUR
View
B
Retailer 14
-
£10,270 GBP
ZAR 222,636 ZAR
View
B
Retailer 15
-
£10,918 GBP
View
Most Expensive
B
NZ Jewellers
ef70bf24-57fa-4a5e-9bde-f717cf668600 · Nov 2
£11,650 GBP
$15,634 USD
View
15 more retailers have this diamond
Prices start from £6,451 GBPSave up to £5,199 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
£6,451 GBP