CaratHunter
Plans
Oval|Natural|GIA

1.21ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 3545373520

Certificate GIA 3545373520

Diamond specifications and retailer prices

From £1,071 GBP
As of November 6, 2026
Save £1,412 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,484 GBP at NZ Jewellers · As of October 17, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545373520. Listed at 15 retailers as of November 4, 2026, with a 132% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545373520
Dimensions8.46 × 6.04 × 3.78 mm
L/W Ratio1.40
Top View
8.46 mm6.04 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3545373520
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.5%

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: £1,124 GBP|Low: £1,071 GBP|High: £2,539 GBP|Avg: £1,553 GBP|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7£1,071 GBP
Retailer 1£1,124 GBP
Retailer 5£1,168 GBP
Retailer 2£1,495 GBP
Retailer 8£1,523 GBP
Retailer 4£1,543 GBP
Retailer 3£1,931 GBP
Retailer 6£2,483 GBP

33 data points across 8 retailers

15 retailers£1,071 GBP to £2,483 GBP

A
Cheapest Retailer
-
£1,071 GBP
A
Retailer 2
-
£1,124 GBP
View
A
Retailer 3
-
£1,168 GBP
View
B+
Retailer 4
-
£1,356 GBP
View
Retailer 5
-
£1,428 GBP
View
Price last confirmed 21 days ago
Retailer 6
-
£1,428 GBP
View
Price last confirmed 19 days ago
B+
Retailer 7
-
£1,485 GBP
View
Retailer 8
-
£1,494 GBP
View
Price last confirmed 21 days ago
B+
Retailer 9
-
£1,495 GBP
View
B+
Retailer 10
-
£1,523 GBP
View
B+
Retailer 11
-
£1,543 GBP
View
Retailer 12
-
£1,648 GBP
View
Price last confirmed 19 days ago
B
Retailer 13
-
£1,931 GBP
View
B
Retailer 14
-
£2,483 GBP
View
Most Expensive
NZ Jewellers
57397389-5e4d-4cb0-87e4-ad68ce9fbf2f · Oct 17
£3,484 GBP
$4,663 USD
View
Price last confirmed 20 days ago
14 more retailers have this diamond
Prices start from £1,071 GBPSave up to £1,412 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
£1,071 GBP