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Oval|Natural|IGI

1.51ct L SI1 Oval Natural Diamond

VG • L/SI1 • IGI 689598699

Shape and cutting style on the report: Oval brilliant

Certificate IGI 689598699

Diamond specifications and retailer prices

From £1,473 GBP
As of November 4, 2026
Save £1,937 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,411 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 689598699. Listed at 13 retailers as of November 2, 2026, with prices from £1,473 to £3,411, a £1,937 spread on the same certified stone. NZ Jewellers lists it at £3,411. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.7°
Pavilion angle40.1°
OriginNatural
Grading LabIGI
CertificateIGI 689598699
Dimensions8.43 × 6.34 × 4.19 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizeNone
Top View
8.43 mm6.34 mm1.51 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 689598699
Side View
Table 59.0%Crown 43.7°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 66.1%

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 4
Current: £3,411 GBP|Low: £1,473 GBP|High: £3,411 GBP|Avg: £1,850 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
November 3, 2026
Retailer 12£1,473 GBP
Retailer 11£1,564 GBP
Retailer 6£1,612 GBP
Retailer 10£1,631 GBP
Retailer 13£1,631 GBP
Retailer 5£1,644 GBP
Retailer 8£1,706 GBP
Retailer 9£1,714 GBP
Retailer 4£1,735 GBP
Retailer 3£1,882 GBP
Retailer 7£2,004 GBP
Retailer 2£2,028 GBP
NZ Jewellers£3,411 GBP

42 data points across 13 retailers

13 retailers£1,473 GBP to £3,411 GBP

B+
Cheapest Retailer
-
£1,473 GBP
B+
Retailer 2
-
£1,564 GBP
View
B+
Retailer 3
-
£1,612 GBP
View
Retailer 4
-
£1,631 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£1,631 GBP
View
B+
Retailer 6
-
£1,644 GBP
View
B+
Retailer 7
-
£1,706 GBP
View
B+
Retailer 8
-
£1,714 GBP
View
B+
Retailer 9
-
£1,735 GBP
View
B+
Retailer 10
-
£1,882 GBP
View
B+
Retailer 11
-
£2,004 GBP
View
B+
Retailer 12
-
£2,028 GBP
View
Most Expensive
C
NZ Jewellers
0ea168ee-236b-4412-b8dc-333e2e85b0be · Nov 2
£3,411 GBP
$4,565 USD
View
12 more retailers have this diamond
Prices start from £1,473 GBPSave up to £1,937 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
£1,473 GBP