Oval|Natural|GIA

1.21ct I SI2 Oval Natural Diamond

VG • I/SI2 • GIA 7511961673

Certificate GIA 7511961673

Diamond specifications and retailer prices

From £1,796 GBP
As of November 4, 2026
Save £1,940 GBP (52%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,303 GBP at NZ Jewellers · As of October 20, 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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7511961673. Listed at 17 retailers as of November 4, 2026, with a 108% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7511961673
Dimensions8.46 × 5.99 × 3.73 mm
L/W Ratio1.41
Top View
8.46 mm5.99 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7511961673
Side View
Table 62.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £4,303 GBP|Low: £1,796 GBP|High: £4,303 GBP|Avg: £2,661 GBP
NZ Jewellers
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
November 6, 2026
Retailer 11£1,796 GBP
Retailer 4£1,818 GBP
Retailer 10£1,849 GBP
Retailer 14£1,873 GBP
Retailer 13£1,931 GBP
Retailer 7£2,238 GBP
Retailer 12£2,289 GBP
Retailer 8£2,371 GBP
Retailer 3£2,391 GBP
Retailer 15£2,391 GBP
Retailer 5£2,473 GBP
Retailer 6£2,582 GBP
Retailer 2£2,608 GBP
Retailer 9£3,736 GBP
NZ Jewellers£4,303 GBP

37 data points across 15 retailers

17 retailers£1,796 GBP to £3,736 GBP

A
Cheapest Retailer
-
£1,796 GBP
B+
Retailer 2
-
£1,818 GBP
View
A
Retailer 3
-
£1,849 GBP
View
A
Retailer 4
-
£1,873 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,931 GBP
View
Retailer 6
-
£2,238 GBP
View
Price last confirmed 17 days ago
Retailer 7
-
£2,238 GBP
View
Price last confirmed 21 days ago
B+
Retailer 8
-
£2,289 GBP
View
Retailer 9
-
£2,324 GBP
View
Price last confirmed 21 days ago
B+
Retailer 10
-
£2,371 GBP
View
B
Retailer 11
-
£2,391 GBP
View
B
Retailer 12
-
£2,391 GBP
View
B
Retailer 13
-
£2,473 GBP
View
Retailer 14
-
£2,582 GBP
View
Price last confirmed 16 days ago
B
Retailer 15
-
£2,608 GBP
View
B
Retailer 16
-
£3,736 GBP
View
Most Expensive
NZ Jewellers
bb146835-a73c-4ab3-b202-4f8d81bd00e1 · Oct 20
£4,303 GBP
$5,760 USD
View
Price last confirmed 16 days ago
16 more retailers have this diamond
Prices start from £1,796 GBPSave up to £1,940 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.

A
1.21ct Oval
£1,796 GBP