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Oval|Natural|GIA

1.51ct M SI1 Oval Natural Diamond

ID • M/SI1 • GIA 1485696047

Certificate GIA 1485696047

Diamond specifications and retailer prices

From £1,792 GBP
As of November 4, 2026
Save £2,391 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,184 GBP at NZ Jewellers · As of November 5, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1485696047. Listed at 13 retailers as of November 4, 2026, with prices from £1,792 to £4,184, a £2,391 spread on the same certified stone. NZ Jewellers lists it at £4,184. 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
M
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1485696047
Dimensions8.82 × 6.27 × 4.02 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Needle, Natural
Top View
8.82 mm6.27 mm1.51 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1485696047
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.2%

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: £4,184 GBP|Low: £1,869 GBP|High: £4,184 GBP|Avg: £2,492 GBP|+1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9£1,869 GBP
Retailer 2£1,994 GBP
Retailer 5£2,001 GBP
Retailer 8£2,001 GBP
Retailer 7£2,078 GBP
Retailer 6£2,309 GBP
Retailer 3£2,442 GBP
Retailer 4£2,499 GBP
Retailer 10£3,201 GBP
NZ Jewellers£4,184 GBP

43 data points across 10 retailers

13 retailers£1,792 GBP to £4,184 GBP

B+
Cheapest Retailer
-
£1,792 GBP
B+
Retailer 2
-
£1,869 GBP
View
B+
Retailer 3
-
£1,972 GBP
View
B+
Retailer 4
-
£1,994 GBP
View
B+
Retailer 5
-
£2,001 GBP
View
Retailer 6
-
£2,001 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£2,001 GBP
View
Price last confirmed 19 days ago
B+
Retailer 8
-
£2,078 GBP
View
B
Retailer 9
-
£2,309 GBP
View
Retailer 10
-
£2,309 GBP
View
Price last confirmed 19 days ago
B
Retailer 11
-
£2,442 GBP
View
B
Retailer 12
-
£2,499 GBP
View
Most Expensive
B
NZ Jewellers
b0ea946a-fc9a-4b91-9e45-6ff914f80491 · Nov 5
£4,184 GBP
$5,600 USD
View
12 more retailers have this diamond
Prices start from £1,792 GBPSave up to £2,391 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
£1,792 GBP