Oval|Natural|GIA

1.21ct D SI1 Oval Natural Diamond

ID • D/SI1 • GIA 5536189042

Certificate GIA 5536189042

Diamond specifications and retailer prices

From £2,693 GBP
As of November 5, 2026
Save £2,931 GBP (52%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,625 GBP at MOH London · As of November 4, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5536189042. Listed at 13 retailers as of November 4, 2026, with prices from £2,693 to £5,625, a £2,931 spread on the same certified stone. MOH London lists it at £5,625. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.93°
OriginNatural
Grading LabGIA
CertificateGIA 5536189042
Dimensions8.81 × 6.06 × 3.70 mm
L/W Ratio1.45
Top View
8.81 mm6.06 mm1.21 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5536189042
Side View
Table 56.0%Crown 32.93°Girdle: MED-THKPavilionCulet: NoneDepth 61.0%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £5,625 GBP|Low: £2,693 GBP|High: £5,707 GBP|Avg: £3,775 GBP|-1.3%
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
November 6, 2026
Retailer 3£2,693 GBP
Retailer 13£2,823 GBP
Retailer 9£3,033 GBP
Retailer 11£3,170 GBP
Retailer 4£3,208 GBP
Retailer 10£3,362 GBP
Retailer 12£3,362 GBP
Retailer 7£3,465 GBP
Retailer 2£3,474 GBP
Retailer 5£3,569 GBP
Retailer 6£3,984 GBP
Retailer 8£4,320 GBP
MOH London£5,625 GBP

44 data points across 13 retailers

13 retailers£2,693 GBP to £5,625 GBP

A
Cheapest Retailer
-
£2,693 GBP
B+
Retailer 2
-
£2,823 GBP
View
B+
Retailer 3
-
£3,033 GBP
View
B+
Retailer 4
-
£3,170 GBP
View
Retailer 5
-
£3,208 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£3,362 GBP
View
B+
Retailer 7
-
£3,362 GBP
View
B+
Retailer 8
-
£3,465 GBP
View
B+
Retailer 9
-
£3,474 GBP
View
Retailer 10
-
£3,569 GBP
View
Price last confirmed 28 days ago
B+
Retailer 11
-
£3,984 GBP
View
B
Retailer 12
-
£4,320 GBP
View
Most Expensive
B
MOH London
13A48B8EE · Nov 4
£5,625 GBP
View
12 more retailers have this diamond
Prices start from £2,693 GBPSave up to £2,931 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
£2,693 GBP