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Oval|Natural|GIA

1.20ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 1543538328

Certificate GIA 1543538328

Diamond specifications and retailer prices

From £1,769 GBP
As of November 6, 2026
Save £2,113 GBP (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,512 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 1543538328. Listed at 22 retailers as of November 4, 2026, with a 119% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543538328
Dimensions8.03 × 5.91 × 3.72 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
8.03 mm5.91 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543538328
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.0%

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: £4,512 GBP|Low: £1,769 GBP|High: £4,526 GBP|Avg: £2,576 GBP|+2.5%
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
November 6, 2026
Retailer 3£1,769 GBP
Retailer 2£1,842 GBP
Retailer 10£2,097 GBP
Retailer 11£2,109 GBP
Retailer 6£2,148 GBP
Retailer 13£2,264 GBP
Retailer 8£2,394 GBP
Retailer 4£2,434 GBP
Retailer 7£2,464 GBP
Retailer 14£2,518 GBP
Retailer 5£2,725 GBP
Retailer 9£2,841 GBP
Retailer 12£3,882 GBP
Queensmith£4,512 GBP

27 data points across 14 retailers

22 retailers£1,769 GBP to £3,882 GBP

A
Cheapest Retailer
-
£1,769 GBP
A
Retailer 2
-
£1,842 GBP
View
B+
Retailer 3
-
£2,097 GBP
View
B+
Retailer 4
-
£2,109 GBP
View
B+
Retailer 5
-
£2,148 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,208 GBP
View
B+
Retailer 7
-
£2,264 GBP
View
Retailer 8
-
£2,339 GBP
View
Price last confirmed 19 days ago
Retailer 9
-
£2,339 GBP
View
Price last confirmed 21 days ago
B+
Retailer 10
-
£2,368 GBP
View
B+
Retailer 11
-
£2,394 GBP
View
Retailer 12
-
£2,430 GBP
View
Price last confirmed 21 days ago
B+
Retailer 13
-
£2,434 GBP
View
B+
Retailer 14
-
£2,464 GBP
View
B+
Retailer 15
-
£2,518 GBP
View
Retailer 16
-
£2,533 GBP
View
Price last confirmed 33 days ago
Retailer 17
-
£2,699 GBP
View
Price last confirmed 19 days ago
B+
Retailer 18
-
£2,725 GBP
View
B+
Retailer 19
-
£2,841 GBP
View
B
Retailer 20
-
£3,882 GBP
View
Retailer 21
-
£4,076 GBP
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
1543538328 · Oct 28
£4,512 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from £1,769 GBPSave up to £2,113 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
1.20ct Oval
£1,769 GBP