CaratHunter
Plans
Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 2556943966

Certificate GIA 2556943966

Diamond specifications and retailer prices

From £1,973 GBP
As of November 6, 2026
Save £2,756 GBP (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,729 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556943966. Listed at 19 retailers as of November 2, 2026, with prices from £1,973 to £4,729, a £2,756 spread on the same certified stone. NZ Jewellers lists it at £4,729. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle35.7°
OriginNatural
Grading LabGIA
CertificateGIA 2556943966
Dimensions9.28 × 6.49 × 3.87 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeNone
Top View
9.28 mm6.49 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556943966
Side View
Table 59.0%Crown 35.8°Girdle: MED-THKPavilion 35.7°Culet: NoneDepth 59.7%

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: £4,729 GBP|Low: £1,925 GBP|High: £4,729 GBP|Avg: £2,643 GBP|+2.5%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 5, 2026
Retailer 9£1,973 GBP
Retailer 3£2,056 GBP
Retailer 11£2,088 GBP
Retailer 12£2,156 GBP
Retailer 18£2,177 GBP
Retailer 7£2,267 GBP
Retailer 8£2,270 GBP
Retailer 5£2,380 GBP
Retailer 10£2,399 GBP
Retailer 17£2,459 GBP
Retailer 14£2,522 GBP
Retailer 4£2,641 GBP
Retailer 15£2,643 GBP
Retailer 2£2,809 GBP
Retailer 6£2,838 GBP
Retailer 16£2,984 GBP
Retailer 19£3,337 GBP
Retailer 13£4,527 GBP
NZ Jewellers£4,729 GBP

26 data points across 19 retailers

19 retailers£1,973 GBP to £4,729 GBP

A
Cheapest Retailer
-
£1,973 GBP
A
Retailer 2
-
£2,056 GBP
View
Retailer 3
-
£2,088 GBP
View
Price last confirmed 16 days ago
A
Retailer 4
-
£2,156 GBP
View
A
Retailer 5
-
£2,177 GBP
View
A
Retailer 6
-
£2,267 GBP
View
B+
Retailer 7
-
£2,270 GBP
View
Final sale: no returns
A
Retailer 8
-
£2,380 GBP
View
Retailer 9
-
£2,399 GBP
View
Price last confirmed 8 days ago
A
Retailer 10
-
£2,459 GBP
View
A
Retailer 11
-
£2,522 GBP
View
A
Retailer 12
-
£2,641 GBP
View
A
Retailer 13
-
£2,643 GBP
View
B+
Retailer 14
-
£2,809 GBP
View
B+
Retailer 15
-
£2,838 GBP
View
B+
Retailer 16
-
£2,984 GBP
View
B+
Retailer 17
-
£3,337 GBP
View
B
Retailer 18
-
£4,527 GBP
View
Most Expensive
B
NZ Jewellers
de770bf7-1717-4e9e-b9a1-0ad4fe41ab3b · Nov 2
£4,729 GBP
$6,330 USD
View
18 more retailers have this diamond
Prices start from £1,973 GBPSave up to £2,756 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
£1,973 GBP