Oval|Natural|GIA

1.21ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 2547470600

Certificate GIA 2547470600

Diamond specifications and retailer prices

From £1,219 GBP
As of November 6, 2026
Save £1,553 GBP (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,421 GBP at NZ Jewellers · As of September 25, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547470600. Listed at 17 retailers as of November 4, 2026, with a 127% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.21
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 2547470600
Dimensions8.31 × 5.93 × 3.77 mm
L/W Ratio1.40
Top View
8.31 mm5.93 mm1.21 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2547470600
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 39.7°Culet: NoneDepth 63.6%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £1,713 GBP|Low: £1,206 GBP|High: £2,856 GBP|Avg: £1,707 GBP|-1.1%
Retailer 1
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
November 6, 2026
Retailer 4£1,219 GBP
Retailer 15£1,224 GBP
Retailer 11£1,327 GBP
Retailer 12£1,343 GBP
Retailer 6£1,422 GBP
Retailer 7£1,472 GBP
Retailer 3£1,558 GBP
Retailer 9£1,558 GBP
Retailer 14£1,569 GBP
Retailer 1£1,713 GBP
Retailer 5£1,739 GBP
Retailer 8£1,937 GBP
Retailer 2£2,167 GBP
Retailer 13£2,446 GBP
Retailer 10£2,772 GBP

30 data points across 15 retailers

17 retailers£1,219 GBP to £2,772 GBP

A
Cheapest Retailer
-
£1,219 GBP
A
Retailer 2
-
£1,224 GBP
View
A
Retailer 3
-
£1,327 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,343 GBP
View
A
Retailer 5
-
£1,422 GBP
View
B+
Retailer 6
-
£1,472 GBP
View
B+
Retailer 7
-
£1,558 GBP
View
B+
Retailer 8
-
£1,558 GBP
View
B+
Retailer 9
-
£1,569 GBP
View
B+
Retailer 10
-
£1,713 GBP
View
B+
Retailer 11
-
£1,739 GBP
View
Retailer 12
-
£1,739 GBP
View
Price last confirmed 16 days ago
B+
Retailer 13
-
£1,937 GBP
View
B
Retailer 14
-
£2,167 GBP
View
B
Retailer 15
-
£2,446 GBP
View
B
Retailer 16
-
£2,772 GBP
View
Most Expensive
NZ Jewellers
a4adac43-706e-42c0-8ebb-5eb68a457049 · Sep 25
£3,421 GBP
$4,579 USD
View
Price last confirmed 42 days ago
16 more retailers have this diamond
Prices start from £1,219 GBPSave up to £1,553 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
£1,219 GBP