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Oval|Natural|GIA

1.21ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 1545431226

Certificate GIA 1545431226

Diamond specifications and retailer prices

From £979 GBP
As of November 6, 2026
4 retailers carry this diamond
Most expensive: £2,129 GBP at NZ Jewellers · As of September 12, 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 1545431226. Listed at 4 retailers as of November 6, 2026. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Pavilion angle34.98°
OriginNatural
Grading LabGIA
CertificateGIA 1545431226
Dimensions8.47 × 6.05 × 3.57 mm
L/W Ratio1.40
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
8.47 mm6.05 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545431226
Side View
Table 64.0%CrownGirdle: ThickPavilion 34.98°Culet: NoneDepth 59.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £2,129 GBP|Low: £678 GBP|High: £2,129 GBP|Avg: £1,230 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 14, 2026
Retailer 6£678 GBP
Retailer 5£851 GBP
Retailer 2£871 GBP
Retailer 3£888 GBP
Retailer 4£979 GBP
Retailer 8£1,244 GBP
Retailer 7£1,396 GBP
NZ Jewellers£2,129 GBP

73 data points across 8 retailers

4 retailers

Retailer 1
-
£678 GBP
Price last confirmed 63 days ago
Retailer 2
-
£851 GBP
View
Price last confirmed 54 days ago
B+
Retailer 3
-
£979 GBP
View
Most Expensive
NZ Jewellers
79e716ea-ae68-4aa3-83a9-db48c46f58f7 · Sep 12
£2,129 GBP
$2,849 USD
View
Price last confirmed 54 days ago
3 more retailers have this diamond
Prices start from £979 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.

B+
1.21ct Oval
£979 GBP