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Oval|Natural|GIA

1.20ct I SI1 Oval Natural Diamond

GD • I/SI1 • GIA 1545354362

Certificate GIA 1545354362

Diamond specifications and retailer prices

From £1,851 GBP
As of November 4, 2026
Save £2,643 GBP (59%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,495 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1545354362. Listed at 22 retailers as of November 4, 2026, with prices from £1,851 to £4,495, a £2,643 spread on the same certified stone. NZ Jewellers lists it at £4,495. 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

1.20
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle37.7°
OriginNatural
Grading LabGIA
CertificateGIA 1545354362
Dimensions8.05 × 5.84 × 3.80 mm
L/W Ratio1.38
Girdle conditionFaceted
Top View
8.05 mm5.84 mm1.20 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545354362
Side View
Table 64.0%Crown 41.1°Girdle: MED-THKPavilion 37.7°Culet: NDepth 65.1%

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 4
Current: £4,495 GBP|Low: £1,833 GBP|High: £4,511 GBP|Avg: £2,637 GBP|-0.4%
NZ Jewellers
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
Retailer 21
November 6, 2026
Retailer 12£1,851 GBP
Retailer 6£1,951 GBP
Retailer 19£2,093 GBP
Retailer 16£2,157 GBP
Retailer 21£2,158 GBP
Retailer 18£2,271 GBP
Retailer 14£2,278 GBP
Retailer 17£2,337 GBP
Retailer 3£2,427 GBP
Retailer 4£2,480 GBP
Retailer 7£2,570 GBP
Retailer 11£2,570 GBP
Retailer 8£2,652 GBP
Retailer 13£2,669 GBP
Retailer 10£2,696 GBP
Retailer 2£2,832 GBP
Retailer 9£2,833 GBP
Retailer 5£3,061 GBP
Retailer 15£3,148 GBP
Retailer 20£4,303 GBP
NZ Jewellers£4,495 GBP

26 data points across 21 retailers

22 retailers£1,851 GBP to £4,495 GBP

A
Cheapest Retailer
-
£1,851 GBP
B+
Retailer 2
-
£1,951 GBP
View
B+
Retailer 3
-
£2,093 GBP
View
B+
Retailer 4
-
£2,157 GBP
View
B+
Retailer 5
-
£2,158 GBP
View
Final sale: no returns
B
Retailer 6
-
£2,271 GBP
View
Retailer 7
-
£2,278 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£2,337 GBP
View
B
Retailer 9
-
£2,427 GBP
View
B
Retailer 10
-
£2,480 GBP
View
B
Retailer 11
-
£2,570 GBP
View
B
Retailer 12
-
£2,570 GBP
View
B
Retailer 13
-
£2,652 GBP
View
B
Retailer 14
-
£2,669 GBP
View
B
Retailer 15
-
£2,696 GBP
View
Retailer 16
-
£2,800 GBP
View
Price last confirmed 33 days ago
B
Retailer 17
-
£2,832 GBP
View
B
Retailer 18
-
£2,833 GBP
View
B
Retailer 19
-
£3,061 GBP
View
B
Retailer 20
-
£3,148 GBP
View
C
Retailer 21
-
£4,303 GBP
View
Most Expensive
C
NZ Jewellers
80b1a03c-0c2c-42aa-82e8-f9d2f53f4360 · Nov 5
£4,495 GBP
$6,016 USD
View
21 more retailers have this diamond
Prices start from £1,851 GBPSave up to £2,643 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
£1,851 GBP