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Oval|Natural|GIA

1.20ct H SI1 Oval Natural Diamond

ID • H/SI1 • GIA 1535471401

Certificate GIA 1535471401

Diamond specifications and retailer prices

From £2,161 GBP
As of November 6, 2026
Save £2,721 GBP (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £4,967 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1535471401. Listed at 24 retailers as of November 5, 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. 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

1.20
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1535471401
Dimensions9.10 × 5.56 × 3.60 mm
L/W Ratio1.64
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cloud, Crystal, Cavity, Needle, Indented Natural, Natural
Top View
9.10 mm5.56 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1535471401
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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: £4,967 GBP|Low: £2,161 GBP|High: £5,043 GBP|Avg: £3,368 GBP
Queensmith
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
November 6, 2026
Retailer 14£2,161 GBP
Retailer 13£2,235 GBP
Retailer 4£2,560 GBP
Retailer 20£2,586 GBP
Retailer 3£2,622 GBP
Retailer 12£2,660 GBP
Retailer 15£2,718 GBP
Retailer 17£2,720 GBP
Retailer 6£2,755 GBP
Retailer 11£2,894 GBP
Retailer 16£2,911 GBP
Retailer 7£2,949 GBP
Retailer 2£2,959 GBP
Retailer 9£2,994 GBP
Retailer 19£3,233 GBP
Retailer 18£3,261 GBP
Retailer 10£3,558 GBP
Retailer 8£4,820 GBP
Retailer 5£4,882 GBP
Queensmith£4,967 GBP

21 data points across 20 retailers

24 retailers£2,161 GBP to £4,882 GBP

B+
Cheapest Retailer
-
£2,161 GBP
B+
Retailer 2
-
£2,235 GBP
View
B+
Retailer 3
-
£2,560 GBP
View
B+
Retailer 4
-
£2,586 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,622 GBP
View
Retailer 6
-
£2,660 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£2,718 GBP
View
B+
Retailer 8
-
£2,720 GBP
View
B+
Retailer 9
-
£2,735 GBP
View
B+
Retailer 10
-
£2,738 GBP
View
B+
Retailer 11
-
£2,755 GBP
View
Retailer 12
-
£2,894 GBP
View
Price last confirmed 8 days ago
B+
Retailer 13
-
£2,911 GBP
View
B+
Retailer 14
-
£2,949 GBP
View
B+
Retailer 15
-
£2,959 GBP
View
B
Retailer 16
-
£2,985 GBP
View
B+
Retailer 17
-
£2,994 GBP
View
Retailer 18
-
£3,128 GBP
View
Price last confirmed 33 days ago
B
Retailer 19
-
£3,233 GBP
View
B
Retailer 20
-
£3,261 GBP
View
B
Retailer 21
-
£3,558 GBP
View
B
Retailer 22
-
£4,820 GBP
View
B
Retailer 23
-
£4,882 GBP
View
Most Expensive
Queensmith
1535471401 · Oct 28
£4,967 GBP
View
Price last confirmed 9 days ago
23 more retailers have this diamond
Prices start from £2,161 GBPSave up to £2,721 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+
1.20ct Oval
£2,161 GBP