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Oval|Natural|GIA

1.21ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 3545127187

Certificate GIA 3545127187

Diamond specifications and retailer prices

From £3,012 GBP
As of November 6, 2026
Save £3,363 GBP (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £6,374 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 G 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 3545127187. Listed at 19 retailers as of November 5, 2026, with prices from £3,012 to £6,374, a £3,363 spread on the same certified stone. NZ Jewellers lists it at £6,374. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3545127187
Dimensions8.53 × 5.82 × 3.63 mm
L/W Ratio1.47
Top View
8.53 mm5.82 mm1.21 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 3545127187
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.3%

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 6
Current: £4,056 GBP|Low: £3,187 GBP|High: £6,143 GBP|Avg: £4,102 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 7£3,187 GBP
Retailer 10£3,265 GBP
Retailer 9£3,453 GBP
Retailer 4£3,753 GBP
Retailer 8£3,842 GBP
Retailer 2£3,984 GBP
Retailer 1£4,056 GBP
Retailer 5£4,289 GBP
Retailer 6£4,650 GBP
Retailer 3£6,038 GBP

46 data points across 10 retailers

19 retailers£3,012 GBP to £6,374 GBP

B+
Cheapest Retailer
-
£3,012 GBP
B+
Retailer 2
-
£3,187 GBP
View
Final sale: no returns
B+
Retailer 3
-
£3,214 GBP
View
B+
Retailer 4
-
£3,265 GBP
View
Retailer 5
-
£3,453 GBP
View
Price last confirmed 9 days ago
B
Retailer 6
-
£3,453 GBP
View
B
Retailer 7
-
£3,453 GBP
View
B
Retailer 8
-
£3,753 GBP
View
Retailer 9
-
£3,842 GBP
View
Price last confirmed 29 days ago
B
Retailer 10
-
£3,878 GBP
View
B
Retailer 11
-
£3,878 GBP
View
B
Retailer 12
-
£3,923 GBP
View
B
Retailer 13
-
£3,984 GBP
View
B
Retailer 14
-
£4,005 GBP
View
B
Retailer 15
-
£4,056 GBP
View
B
Retailer 16
-
£4,289 GBP
View
B
Retailer 17
-
£4,650 GBP
View
B
Retailer 18
-
£6,038 GBP
View
Most Expensive
B
NZ Jewellers
73eb8bfa-213b-4f4a-82e2-5d2c42b032b2 · Nov 5
£6,374 GBP
$8,532 USD
View
18 more retailers have this diamond
Prices start from £3,012 GBPSave up to £3,363 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
£3,012 GBP