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Oval|Natural|GIA

1.21ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 5563116856

Certificate GIA 5563116856

Diamond specifications and retailer prices

From £1,236 GBP
As of November 6, 2026
Save £2,416 GBP (66%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,652 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-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 5563116856. Listed at 19 retailers as of November 5, 2026, with prices from £1,236 to £3,652, a £2,416 spread on the same certified stone. NZ Jewellers lists it at £3,652. 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

1.21
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle39.3°
Pavilion angle36.8°
OriginNatural
Grading LabGIA
CertificateGIA 5563116856
Dimensions8.66 × 5.80 × 3.65 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizeNone
Top View
8.66 mm5.80 mm1.21 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5563116856
Side View
Table 58.0%Crown 39.3°Girdle: MED-THKPavilion 36.8°Culet: NDepth 62.9%

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: £3,652 GBP|Low: £1,080 GBP|High: £3,652 GBP|Avg: £1,644 GBP|+2.2%
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
Retailer 20
Retailer 21
November 6, 2026
Retailer 11£1,080 GBP
Retailer 5£1,113 GBP
Retailer 2£1,236 GBP
Retailer 19£1,252 GBP
Retailer 10£1,278 GBP
Retailer 21£1,357 GBP
Retailer 6£1,403 GBP
Retailer 12£1,431 GBP
Retailer 17£1,431 GBP
Retailer 15£1,452 GBP
Retailer 8£1,464 GBP
Retailer 13£1,491 GBP
Retailer 20£1,497 GBP
Retailer 14£1,509 GBP
Retailer 7£1,532 GBP
Retailer 18£1,565 GBP
Retailer 16£1,626 GBP
Retailer 4£1,783 GBP
Retailer 3£1,860 GBP
Retailer 9£2,569 GBP
NZ Jewellers£3,652 GBP

28 data points across 21 retailers

19 retailers£1,236 GBP to £3,652 GBP

Retailer 1
-
£1,080 GBP
Price last confirmed 10 days ago
Retailer 2
-
£1,113 GBP
View
Price last confirmed 11 days ago
B+
Retailer 3
-
£1,236 GBP
View
A
Retailer 4
-
£1,252 GBP
View
Final sale: no returns
Retailer 5
-
£1,278 GBP
View
Price last confirmed 16 days ago
B+
Retailer 6
-
£1,357 GBP
View
B+
Retailer 7
-
£1,431 GBP
View
B+
Retailer 8
-
£1,452 GBP
View
Retailer 9
-
£1,464 GBP
View
Price last confirmed 12 days ago
B+
Retailer 10
-
£1,491 GBP
View
B+
Retailer 11
-
£1,497 GBP
View
Retailer 12
-
£1,509 GBP
View
Price last confirmed 10 days ago
Retailer 13
-
£1,532 GBP
View
Price last confirmed 12 days ago
B+
Retailer 14
-
£1,565 GBP
View
B+
Retailer 15
-
£1,626 GBP
View
Retailer 16
-
£1,783 GBP
View
Price last confirmed 11 days ago
Retailer 17
-
£1,860 GBP
View
Price last confirmed 11 days ago
Retailer 18
-
£2,569 GBP
View
Price last confirmed 12 days ago
Most Expensive
C
NZ Jewellers
b5553e24-b1d4-4f69-8cb3-42efcead24b7 · Nov 5
£3,652 GBP
$4,888 USD
View
18 more retailers have this diamond
Prices start from £1,236 GBPSave up to £2,416 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
1.21ct Oval
£1,236 GBP