Oval|Natural|GIA

1.21ct F SI1 Oval Natural Diamond

EX • F/SI1 • GIA 2241097312

Certificate GIA 2241097312

Diamond specifications and retailer prices

From £3,004 GBP
As of November 5, 2026
Save £2,341 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,345 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2241097312. Listed at 14 retailers as of November 5, 2026, with prices from £3,004 to £5,345, a £2,341 spread on the same certified stone. Helzberg Diamonds lists it at £5,345. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.09°
Pavilion angle39.87°
OriginNatural
Grading LabGIA
CertificateGIA 2241097312
Dimensions8.33 × 5.99 × 3.73 mm
L/W Ratio1.39
Culet sizeNone
Top View
8.33 mm5.99 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2241097312
Side View
Table 61.0%Crown 40.09°Girdle: MED-THKPavilion 39.87°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £5,345 GBP|Low: £3,004 GBP|High: £5,345 GBP|Avg: £3,804 GBP
Helzberg Diamonds
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
November 6, 2026
Retailer 4£3,004 GBP
Retailer 8£3,055 GBP
Retailer 14£3,059 GBP
Retailer 12£3,088 GBP
Retailer 3£3,159 GBP
Retailer 11£3,201 GBP
Retailer 6£3,255 GBP
Retailer 7£3,361 GBP
Retailer 5£3,777 GBP
Retailer 10£3,851 GBP
Retailer 2£4,137 GBP
Retailer 13£5,030 GBP
Retailer 9£5,330 GBP
Helzberg Diamonds£5,345 GBP

22 data points across 14 retailers

14 retailers£3,004 GBP to £5,345 GBP

B+
Cheapest Retailer
-
£3,004 GBP
B+
Retailer 2
-
£3,055 GBP
View
B+
Retailer 3
-
£3,059 GBP
View
B+
Retailer 4
-
£3,088 GBP
View
B+
Retailer 5
-
£3,159 GBP
View
B+
Retailer 6
-
£3,201 GBP
View
B+
Retailer 7
-
£3,255 GBP
View
B+
Retailer 8
-
£3,361 GBP
View
B
Retailer 9
-
£3,777 GBP
View
B
Retailer 10
-
£3,851 GBP
View
B
Retailer 11
-
£4,137 GBP
View
B
Retailer 12
-
£5,030 GBP
View
B
Retailer 13
-
£5,330 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRIIKHGPNJHI · Nov 6
£5,345 GBP
$7,154 USD
View
13 more retailers have this diamond
Prices start from £3,004 GBPSave up to £2,341 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
£3,004 GBP