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Oval|Natural|GIA

1.21ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 6545974485

Certificate GIA 6545974485

Diamond specifications and retailer prices

From £2,019 GBP
As of November 6, 2026
Save £2,929 GBP (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,948 GBP at MOH London · As of November 2, 2026
View at MOH London

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 6545974485. Listed at 20 retailers as of November 2, 2026, with prices from £2,019 to £4,948, a £2,929 spread on the same certified stone. MOH London lists it at £4,948. 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545974485
Dimensions8.50 × 6.04 × 3.53 mm
L/W Ratio1.41
Top View
8.50 mm6.04 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6545974485
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.5%

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 6
Current: £4,948 GBP|Low: £1,463 GBP|High: £4,975 GBP|Avg: £2,314 GBP|+40.8%
MOH London
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
Retailer 15
Retailer 16
Retailer 17
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Retailer 20
November 6, 2026
Retailer 7£1,463 GBP
Retailer 5£1,620 GBP
Retailer 9£1,662 GBP
Retailer 4£1,707 GBP
Retailer 6£1,736 GBP
Retailer 8£1,847 GBP
Retailer 10£1,883 GBP
Retailer 12£2,226 GBP
Retailer 3£2,380 GBP
Retailer 19£2,518 GBP
Retailer 16£2,547 GBP
Retailer 20£2,578 GBP
Retailer 17£2,915 GBP
Retailer 2£2,947 GBP
Retailer 14£2,997 GBP
Retailer 11£3,006 GBP
Retailer 15£3,347 GBP
Retailer 18£3,410 GBP
Retailer 13£3,612 GBP
MOH London£4,948 GBP

33 data points across 20 retailers

20 retailers£2,019 GBP to £4,948 GBP

Retailer 1
-
£1,463 GBP
Price last confirmed 15 days ago
Retailer 2
-
£1,620 GBP
View
Price last confirmed 14 days ago
Retailer 3
-
£1,707 GBP
View
Price last confirmed 15 days ago
Retailer 4
-
£1,736 GBP
View
Price last confirmed 16 days ago
Retailer 5
-
£1,883 GBP
View
Price last confirmed 16 days ago
B+
Retailer 6
-
£2,019 GBP
View
Retailer 7
-
£2,226 GBP
View
Price last confirmed 30 days ago
B+
Retailer 8
-
£2,380 GBP
View
B
Retailer 9
-
£2,518 GBP
View
B
Retailer 10
-
£2,547 GBP
View
B
Retailer 11
-
£2,578 GBP
View
B
Retailer 12
-
£2,915 GBP
View
B+
Retailer 13
-
£2,947 GBP
View
B
Retailer 14
-
£2,997 GBP
View
Retailer 15
-
£3,006 GBP
View
Price last confirmed 21 days ago
B
Retailer 16
-
£3,347 GBP
View
B
Retailer 17
-
£3,410 GBP
View
B
Retailer 18
-
£3,612 GBP
View
Retailer 19
-
£4,176 GBP
View
Price last confirmed 42 days ago
Most Expensive
C
MOH London
7B76E8ED6 · Nov 2
£4,948 GBP
View
19 more retailers have this diamond
Prices start from £2,019 GBPSave up to £2,929 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
£2,019 GBP