Oval|Natural|GIA

1.21ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 3555079183

Certificate GIA 3555079183

Diamond specifications and retailer prices

From £2,008 GBP
As of November 6, 2026
Save £2,478 GBP (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,792 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555079183. Listed at 17 retailers as of November 1, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3555079183
Dimensions8.10 × 5.92 × 3.78 mm
L/W Ratio1.37
Top View
8.10 mm5.92 mm1.21 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3555079183
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: 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: £4,792 GBP|Low: £2,008 GBP|High: £4,811 GBP|Avg: £2,997 GBP|+2.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£2,008 GBP
Retailer 2£2,081 GBP
Retailer 5£2,383 GBP
Retailer 9£2,453 GBP
Retailer 4£2,750 GBP
Retailer 7£2,766 GBP
Retailer 3£2,787 GBP
Retailer 8£3,110 GBP
Retailer 10£4,486 GBP
Queensmith£4,792 GBP

31 data points across 10 retailers

17 retailers£2,008 GBP to £4,486 GBP

A
Cheapest Retailer
-
£2,008 GBP
A
Retailer 2
-
£2,081 GBP
View
A
Retailer 3
-
£2,383 GBP
View
A
Retailer 4
-
£2,453 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,508 GBP
View
B+
Retailer 6
-
£2,597 GBP
View
Retailer 7
-
£2,683 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
£2,683 GBP
View
Price last confirmed 19 days ago
B+
Retailer 9
-
£2,750 GBP
View
B+
Retailer 10
-
£2,766 GBP
View
Retailer 11
-
£2,786 GBP
View
Price last confirmed 21 days ago
B+
Retailer 12
-
£2,787 GBP
View
Retailer 13
-
£3,096 GBP
View
Price last confirmed 19 days ago
B+
Retailer 14
-
£3,110 GBP
View
B
Retailer 15
-
£4,486 GBP
View
Retailer 16
-
£4,675 GBP
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
3555079183 · Oct 28
£4,792 GBP
View
Price last confirmed 9 days ago
16 more retailers have this diamond
Prices start from £2,008 GBPSave up to £2,478 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
£2,008 GBP