Oval|Natural|GIA

1.21ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 6512485714

Certificate GIA 6512485714

Diamond specifications and retailer prices

From £2,701 GBP
As of November 5, 2026
Save £3,201 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,902 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512485714. Listed at 14 retailers as of November 5, 2026, with prices from £2,701 to £5,902, a £3,201 spread on the same certified stone. NZ Jewellers lists it at £5,902. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6512485714
Dimensions8.49 × 5.71 × 3.62 mm
L/W Ratio1.49
Top View
8.49 mm5.71 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6512485714
Side View
Table 56.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £3,287 GBP|Low: £2,701 GBP|High: £5,461 GBP|Avg: £3,628 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£2,701 GBP
Retailer 6£2,883 GBP
Retailer 9£2,921 GBP
Retailer 1£3,287 GBP
Retailer 8£3,415 GBP
Retailer 2£3,431 GBP
Retailer 5£3,833 GBP
Retailer 3£4,133 GBP
Retailer 4£5,381 GBP

39 data points across 9 retailers

14 retailers£2,701 GBP to £5,902 GBP

B
Cheapest Retailer
-
£2,701 GBP
B+
Retailer 2
-
£2,883 GBP
View
B+
Retailer 3
-
£2,921 GBP
View
B
Retailer 4
-
£3,069 GBP
View
Retailer 5
-
£3,069 GBP
View
Price last confirmed 8 days ago
B
Retailer 6
-
£3,069 GBP
View
B
Retailer 7
-
£3,287 GBP
View
Retailer 8
-
£3,415 GBP
View
Price last confirmed 28 days ago
B
Retailer 9
-
£3,431 GBP
View
B
Retailer 10
-
£3,541 GBP
View
B
Retailer 11
-
£3,833 GBP
View
B
Retailer 12
-
£4,133 GBP
View
B
Retailer 13
-
£5,381 GBP
View
Most Expensive
B
NZ Jewellers
edce7938-a8a4-4108-9120-d4a5b64d9071 · Nov 5
£5,902 GBP
$7,900 USD
View
13 more retailers have this diamond
Prices start from £2,701 GBPSave up to £3,201 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
£2,701 GBP