Oval|Natural|GIA

1.21ct I SI1 Oval Natural Diamond

GD • I/SI1 • GIA 5543326587

Certificate GIA 5543326587

Diamond specifications and retailer prices

From £1,893 GBP
As of November 6, 2026
Save £2,381 GBP (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,465 GBP at NZ Jewellers · As of October 30, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 5543326587. Listed at 21 retailers as of November 4, 2026, with a 126% 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.12°
Pavilion angle36.71°
OriginNatural
Grading LabGIA
CertificateGIA 5543326587
Dimensions8.32 × 5.89 × 3.76 mm
L/W Ratio1.41
Top View
8.32 mm5.89 mm1.21 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543326587
Side View
Table 60.0%Crown 41.12°Girdle: STK-THKPavilion 36.71°Culet: NoneDepth 63.9%

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: £4,465 GBP|Low: £1,874 GBP|High: £4,522 GBP|Avg: £2,814 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 20£1,893 GBP
Retailer 12£2,075 GBP
Retailer 17£2,209 GBP
Retailer 21£2,238 GBP
Retailer 8£2,275 GBP
Retailer 7£2,365 GBP
Retailer 5£2,385 GBP
Retailer 15£2,443 GBP
Retailer 9£2,478 GBP
Retailer 2£2,486 GBP
Retailer 11£2,563 GBP
Retailer 13£2,631 GBP
Retailer 4£2,661 GBP
Retailer 10£2,818 GBP
Retailer 14£2,862 GBP
Retailer 3£2,957 GBP
Retailer 19£2,999 GBP
Retailer 16£3,128 GBP
Retailer 6£3,637 GBP
Retailer 18£4,274 GBP
NZ Jewellers£4,465 GBP

30 data points across 21 retailers

21 retailers£1,893 GBP to £4,274 GBP

B+
Cheapest Retailer
-
£1,893 GBP
B+
Retailer 2
-
£2,075 GBP
View
B+
Retailer 3
-
£2,209 GBP
View
B+
Retailer 4
-
£2,238 GBP
View
B+
Retailer 5
-
£2,275 GBP
View
B+
Retailer 6
-
£2,365 GBP
View
Final sale: no returns
B
Retailer 7
-
£2,385 GBP
View
B+
Retailer 8
-
£2,443 GBP
View
B
Retailer 9
-
£2,478 GBP
View
B
Retailer 10
-
£2,486 GBP
View
Retailer 11
-
£2,563 GBP
View
Price last confirmed 8 days ago
B
Retailer 12
-
£2,631 GBP
View
Retailer 13
-
£2,661 GBP
View
Price last confirmed 8 days ago
B
Retailer 14
-
£2,818 GBP
View
Retailer 15
-
£2,862 GBP
View
Price last confirmed 29 days ago
B
Retailer 16
-
£2,957 GBP
View
B
Retailer 17
-
£2,999 GBP
View
B
Retailer 18
-
£3,128 GBP
View
B
Retailer 19
-
£3,637 GBP
View
B
Retailer 20
-
£4,274 GBP
View
Most Expensive
NZ Jewellers
35f8d467-93a2-4b2e-9f5a-cc8e6eef1d4b · Oct 30
£4,465 GBP
$5,976 USD
View
Price last confirmed 7 days ago
20 more retailers have this diamond
Prices start from £1,893 GBPSave up to £2,381 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
£1,893 GBP