Oval|Natural|GIA

1.51ct L SI1 Oval Natural Diamond

GD • L/SI1 • GIA 6561000358

Certificate GIA 6561000358

Diamond specifications and retailer prices

From £1,520 GBP
As of November 6, 2026
Save £1,036 GBP (41%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,721 GBP at NZ Jewellers · As of August 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6561000358. Listed at 19 retailers as of November 5, 2026, with a 68% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6561000358
Dimensions8.84 × 6.23 × 4.04 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural, Needle, Natural
Top View
8.84 mm6.23 mm1.51 ctL / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6561000358
Side View
Table 56.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,520 GBP|Low: £1,520 GBP|High: £2,574 GBP|Avg: £2,069 GBP|-8.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1£1,520 GBP
Retailer 8£1,772 GBP
Retailer 6£1,913 GBP
Retailer 7£1,931 GBP
Retailer 2£2,059 GBP
Retailer 4£2,217 GBP
Retailer 3£2,438 GBP
Retailer 5£2,556 GBP

26 data points across 8 retailers

19 retailers£1,520 GBP to £2,556 GBP

A
Cheapest Retailer
-
£1,520 GBP
B+
Retailer 2
-
£1,772 GBP
View
B+
Retailer 3
-
£1,913 GBP
View
B+
Retailer 4
-
£1,931 GBP
View
B+
Retailer 5
-
£1,934 GBP
View
Final sale: no returns
B
Retailer 6
-
£2,055 GBP
View
B+
Retailer 7
-
£2,059 GBP
View
Retailer 8
-
£2,094 GBP
View
Price last confirmed 30 days ago
Retailer 9
-
£2,094 GBP
View
Price last confirmed 29 days ago
B
Retailer 10
-
£2,102 GBP
View
B
Retailer 11
-
£2,199 GBP
View
B
Retailer 12
-
£2,217 GBP
View
Retailer 13
-
£2,232 GBP
View
Price last confirmed 38 days ago
Retailer 14
-
£2,416 GBP
View
Price last confirmed 28 days ago
B
Retailer 15
-
£2,438 GBP
View
B
Retailer 16
-
£2,556 GBP
View
Retailer 17
-
£2,580 GBP
View
Price last confirmed 66 days ago
Retailer 18
-
£4,379 GBP
View
Price last confirmed 28 days ago
Most Expensive
NZ Jewellers
74e7b680-807b-49af-9e02-641340276f0b · Aug 30
£4,721 GBP
$6,319 USD
View
Price last confirmed 68 days ago
18 more retailers have this diamond
Prices start from £1,520 GBPSave up to £1,036 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.

A
1.51ct Oval
£1,520 GBP