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Oval|Natural|GIA

1.21ct E SI1 Oval Natural Diamond

GD • E/SI1 • GIA 2557969790

Certificate GIA 2557969790

Diamond specifications and retailer prices

From £2,457 GBP
As of November 6, 2026
Save £2,793 GBP (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,250 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 E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557969790. Listed at 8 retailers as of November 2, 2026, with prices from £2,457 to £5,250, a £2,793 spread on the same certified stone. MOH London lists it at £5,250. 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
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.64°
Pavilion angle36.31°
OriginNatural
Grading LabGIA
CertificateGIA 2557969790
Dimensions8.22 × 5.83 × 3.72 mm
L/W Ratio1.41
Girdle conditionFaceted
Key to symbols
Crystal, Feather, Needle
Top View
8.22 mm5.83 mm1.21 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557969790
Side View
Table 61.0%Crown 41.64°Girdle: STK-THKPavilion 36.31°Culet: NoneDepth 63.8%

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 6
Current: £5,250 GBP|Low: £2,439 GBP|High: £5,312 GBP|Avg: £3,598 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5£2,457 GBP
Retailer 3£2,867 GBP
Retailer 8£3,098 GBP
Retailer 2£3,161 GBP
Retailer 6£3,473 GBP
Retailer 9£3,495 GBP
Retailer 4£3,729 GBP
Retailer 7£4,626 GBP
MOH London£5,250 GBP

36 data points across 9 retailers

8 retailers£2,457 GBP to £5,250 GBP

A
Cheapest Retailer
-
£2,457 GBP
B+
Retailer 2
-
£2,867 GBP
View
B+
Retailer 3
-
£3,161 GBP
View
B
Retailer 4
-
£3,473 GBP
View
B
Retailer 5
-
£3,495 GBP
View
B
Retailer 6
-
£3,729 GBP
View
B
Retailer 7
-
£4,720 GBP
View
Most Expensive
B
MOH London
CBDC5735A · Nov 2
£5,250 GBP
View
7 more retailers have this diamond
Prices start from £2,457 GBPSave up to £2,793 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
£2,457 GBP